How can I keep my RecyclerView after android rotation? - java

When I rotate my device, my activity instance is destroyed which starts a new onCreate. I can't figure out how to repopulate my RecyclerView after screen orientation. I have tried some solutions involing AndroidManifest: android:configChanges="keyboardHidden|orientation" and also with onSaveInstanceState, but could not get it to work. I have addedonSaveInstanceStateandonRestoreInstanceState` base code to my question, which does not do anything at the moment.
Thanks
MainActivity.java
public class MainActivity extends AppCompatActivity implements RepositoryAdapter.OnItemClickListener {
private static final String LOG_TAG = "MainActivity";
#BindView(R.id.fab_search_github_user)
FloatingActionButton fabSearchGitHubUser;
#BindView(R.id.et_search_user)
EditText etSearchUser;
#BindView(R.id.btn_search_user)
Button btnSearchUser;
#BindView(R.id.github_user)
TextView tvOwner;
#BindView(R.id.github_repository_recyclerview)
RecyclerView mRecyclerView;
private RepositoryAdapter mAdapter;
private Api mApi;
private Owner mOwner;
boolean isSearchToggled = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
ButterKnife.bind(this);
mApi = ApiUtils.getApi();
// RecyclerView
RecyclerView.LayoutManager linearLayoutManager = new LinearLayoutManager(getApplicationContext());
mRecyclerView.setLayoutManager(linearLayoutManager);
mRecyclerView.setHasFixedSize(true);
// Floating action button to toggle user search field.
FloatingActionButton floatingActionButton = (FloatingActionButton) findViewById(R.id.fab_search_github_user);
floatingActionButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
toggleSearch();
}
});
}
#Override
public void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
}
#Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
}
#OnClick(R.id.btn_search_user)
public void onSearchBtnClicked(View view) {
if (!TextUtils.isEmpty(etSearchUser.getText())) {
String searchedUser = etSearchUser.getText().toString();
// Search will be done offline when no internet, otherwise online.
if (!isNetworkAvailable()) {
Toast.makeText(this, "No internet, searching offline", Toast.LENGTH_SHORT).show();
mOwner = Owner.getByUsername(searchedUser);
if (mOwner != null) {
searchByUsername(searchedUser);
tvOwner.setText(searchedUser);
} else {
if (mAdapter != null) {
mAdapter.clearRecyclerView();
}
tvOwner.setText(getString(R.string.user_not_found, searchedUser));
}
} else {
loadRepository(searchedUser);
tvOwner.setText(searchedUser);
Toast.makeText(this, "Searching online", Toast.LENGTH_SHORT).show();
}
} else {
Log.i(LOG_TAG, "Search field is empty");
}
if (view != null) {
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
toggleSearch();
}
/**
* Search local user by username.
*
* #param username The local user that is searched for.
*/
public void searchByUsername(String username) {
mAdapter = new RepositoryAdapter(Repository.getList(username), MainActivity.this);
mRecyclerView.setAdapter(mAdapter);
}
/**
* Search online on GitHub to retrieve all user repositories.
*
* #param username The GitHub user that is searched for.
*/
public void loadRepository(String username) {
mApi.listRepository(username).enqueue(new Callback<List<Repository>>() {
#Override
public void onResponse(Call<List<Repository>> call, Response<List<Repository>> response) {
mAdapter = new RepositoryAdapter(response.body(), MainActivity.this);
mRecyclerView.setAdapter(mAdapter);
}
#Override
public void onFailure(Call<List<Repository>> call, Throwable t) {
Log.e("MainActivity", "error loading from API");
}
});
}
#Override
public void onItemClick(Repository repository) {
if (isNetworkAvailable()) {
mOwner = Owner.getByUsername(repository.owner.getLogin());
Repository mRepository = Repository.getByRepositoryName(repository.getName());
if (mOwner != null) {
if (mRepository != null) {
// Repository is already in Database.
} else {
// Selected repository is added to Database
mRepository = new Repository(mOwner);
mRepository.setName(repository.getName());
mRepository.setLogin(repository.owner.getLogin());
mRepository.setDescription(repository.getDescription());
mRepository.setStargazersCount(repository.getStargazersCount());
mRepository.setForksCount(repository.getForksCount());
mRepository.save();
}
} else {
// selected repository and its owner are added to Database
mOwner = new Owner();
mOwner.setLogin(repository.owner.getLogin());
mOwner.setAvatarUrl(repository.owner.getAvatarUrl());
mOwner.setReposUrl(repository.owner.getReposUrl());
mOwner.save();
mRepository = new Repository(mOwner);
mRepository.setName(repository.getName());
mRepository.setLogin(repository.owner.getLogin());
mRepository.setDescription(repository.getDescription());
mRepository.setStargazersCount(repository.getStargazersCount());
mRepository.setForksCount(repository.getForksCount());
mRepository.save();
}
}
// Send intent with repository name to repository detail activity.
Intent intent = new Intent(MainActivity.this, RepositoryDetailActivity.class);
intent.putExtra(INTENT_KEY_REPOSITORY, repository.getName());
startActivity(intent);
}
/**
* Toggle search field according to its state.
*/
private void toggleSearch() {
if (!isSearchToggled) {
etSearchUser.setVisibility(View.VISIBLE);
btnSearchUser.setVisibility(View.VISIBLE);
isSearchToggled = true;
} else {
etSearchUser.setVisibility(View.GONE);
btnSearchUser.setVisibility(View.GONE);
isSearchToggled = false;
}
}
/**
* Checks if network is available on the device.
*
* #return Return when networkInfo is not null and networkInfo is connected.
*/
private boolean isNetworkAvailable() {
ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
return networkInfo != null && networkInfo.isConnected();
}
}

configChanges also should include screenSize if you want turn off recreating activity class. So correct version:
android:configChanges="keyboardHidden|orientation|screenSize"
In order to save recycler view content without disabling recreating you have to store content in some place which is not bound to activity lifecycle or pass it to bundle in onSaveInstanceState and get it later in onRestoreInstanceState or in onCreate. Please, take a look at https://developer.android.com/guide/components/activities/activity-lifecycle.html

Related

How can I limit interstitial ad opening?

I am a newbie in the developing section, recently I'm trying to edit the source code of the web view application. But the problem is every time of "backpress" interstitial ad appears. Which is huge disturbing. Tried to change back press code but after doing that ads totally diseapred. Now I'm confused that how can I solve this problem. Because if a web view app show ads every back press, probably google will not approve it on play store even if accepts then people will not use this app.
I've tried to limit but cannot understand, please help me.
If this is possible the ad shows only one time of back press or at least a limited backpress.
Thanks in advance <3 <3
mainactivity.java
//Views
public Toolbar mToolbar;
public View mHeaderView;
public TabLayout mSlidingTabLayout;
public SwipeableViewPager mViewPager;
//App Navigation Structure
private NavigationAdapter mAdapter;
private NavigationView navigationView;
private SimpleMenu menu;
private WebFragment CurrentAnimatingFragment = null;
private int CurrentAnimation = 0;
//Identify toolbar state
private static int NO = 0;
private static int HIDING = 1;
private static int SHOWING = 2;
//Keep track of the interstitials we show
private int interstitialCount = -1;
private InterstitialAd mInterstitialAd;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ThemeUtils.setTheme(this);
setContentView(R.layout.activity_main);
mToolbar = (Toolbar) findViewById(R.id.toolbar);
mHeaderView = (View) findViewById(R.id.header_container);
mSlidingTabLayout = (TabLayout) findViewById(R.id.tabs);
mViewPager = (SwipeableViewPager) findViewById(R.id.pager);
setSupportActionBar(mToolbar);
mAdapter = new NavigationAdapter(getSupportFragmentManager(), this);
final Intent intent = getIntent();
final String action = intent.getAction();
if (Intent.ACTION_VIEW.equals(action)) {
String data = intent.getDataString();
((App) getApplication()).setPushUrl(data);
}
//Hiding ActionBar/Toolbar
if (Config.HIDE_ACTIONBAR)
getSupportActionBar().hide();
if (getHideTabs())
mSlidingTabLayout.setVisibility(View.GONE);
hasPermissionToDo(this, Config.PERMISSIONS_REQUIRED);
RelativeLayout.LayoutParams lp = (RelativeLayout.LayoutParams) mViewPager.getLayoutParams();
if ((Config.HIDE_ACTIONBAR && getHideTabs()) || ((Config.HIDE_ACTIONBAR || getHideTabs()) && getCollapsingActionBar())){
lp.topMargin = 0;
} else if ((Config.HIDE_ACTIONBAR || getHideTabs()) || (!Config.HIDE_ACTIONBAR && !getHideTabs() && getCollapsingActionBar())){
lp.topMargin = getActionBarHeight();
} else if (!Config.HIDE_ACTIONBAR && !getHideTabs()){
lp.topMargin = getActionBarHeight() * 2;
}
mViewPager.setLayoutParams(lp);
//Tabs
mViewPager.setAdapter(mAdapter);
mViewPager.setOffscreenPageLimit(mViewPager.getAdapter().getCount() - 1);
mSlidingTabLayout.setupWithViewPager(mViewPager);
mSlidingTabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override
public void onTabSelected(TabLayout.Tab tab) {
if (getCollapsingActionBar()) {
showToolbar(getFragment());
}
mViewPager.setCurrentItem(tab.getPosition());
showInterstitial();
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
for (int i = 0; i < mSlidingTabLayout.getTabCount(); i++) {
if (Config.ICONS.length > i && Config.ICONS[i] != 0) {
mSlidingTabLayout.getTabAt(i).setIcon(Config.ICONS[i]);
}
}
//Drawer
if (Config.USE_DRAWER) {
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
DrawerLayout drawer = ((DrawerLayout) findViewById(R.id.drawer_layout));
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, mToolbar, 0, 0);
drawer.addDrawerListener(toggle);
toggle.syncState();
//Menu items
navigationView = (NavigationView) findViewById(R.id.nav_view);
menu = new SimpleMenu(navigationView.getMenu(), this);
configureMenu(menu);
if (Config.HIDE_DRAWER_HEADER) {
navigationView.getHeaderView(0).setVisibility(View.GONE);
navigationView.setFitsSystemWindows(false);
} else {
if (Config.DRAWER_ICON != R.mipmap.ic_launcher)
((ImageView) navigationView.getHeaderView(0).findViewById(R.id.drawer_icon)).setImageResource(Config.DRAWER_ICON);
else {
((ImageView) navigationView.getHeaderView(0).findViewById(R.id.launcher_icon)).setVisibility(View.VISIBLE);
((ImageView) navigationView.getHeaderView(0).findViewById(R.id.drawer_icon)).setVisibility(View.INVISIBLE);
}
}
} else {
((DrawerLayout) findViewById(R.id.drawer_layout)).setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
}
MobileAds.initialize(this, new OnInitializationCompleteListener() {
#Override
public void onInitializationComplete(InitializationStatus initializationStatus) {
}
});
//Admob
if (!getResources().getString(R.string.ad_banner_id).equals("")) {
// Look up the AdView as a resource and load a request.
AdView adView = (AdView) findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().addTestDevice(AdRequest.DEVICE_ID_EMULATOR).build();
adView.loadAd(adRequest);
} else {
AdView adView = (AdView) findViewById(R.id.adView);
adView.setVisibility(View.GONE);
}
if (getResources().getString(R.string.ad_interstitial_id).length() > 0 && Config.INTERSTITIAL_INTERVAL > 0){
mInterstitialAd = new InterstitialAd(this);
mInterstitialAd.setAdUnitId(getResources().getString(R.string.ad_interstitial_id));
AdRequest adRequestInter = new AdRequest.Builder().addTestDevice(AdRequest.DEVICE_ID_EMULATOR).build();
mInterstitialAd.loadAd(adRequestInter);
mInterstitialAd.setAdListener(new AdListener() {
#Override
public void onAdClosed() {
// Load the next interstitial.
mInterstitialAd.loadAd(new AdRequest.Builder().addTestDevice(AdRequest.DEVICE_ID_EMULATOR).build());
}
});
}
//Application rating
AlertDialog.Builder builder = new AlertDialog.Builder(this)
.setTitle(getString(R.string.rate_title))
.setMessage(String.format(getString(R.string.rate_message), getString(R.string.app_name)))
.setPositiveButton(getString(R.string.rate_yes), null)
.setNegativeButton(getString(R.string.rate_never), null)
.setNeutralButton(getString(R.string.rate_later), null);
new AppRate(this)
.setShowIfAppHasCrashed(false)
.setMinDaysUntilPrompt(2)
.setMinLaunchesUntilPrompt(2)
.setCustomDialog(builder)
.init();
//Showing the splash screen
if (Config.SPLASH) {
findViewById(R.id.imageLoading1).setVisibility(View.VISIBLE);
//getFragment().browser.setVisibility(View.GONE);
}
//Toolbar styling
if (Config.TOOLBAR_ICON != 0) {
getSupportActionBar().setTitle("");
ImageView imageView = findViewById(R.id.toolbar_icon);
imageView.setImageResource(Config.TOOLBAR_ICON);
imageView.setVisibility(View.VISIBLE);
if (!Config.USE_DRAWER){
imageView.setScaleType(ImageView.ScaleType.FIT_START);
}
}
}
// using the back button of the device
#Override
public void onBackPressed() {
View customView = null;
WebChromeClient.CustomViewCallback customViewCallback = null;
if (getFragment().chromeClient != null) {
customView = getFragment().chromeClient.getCustomView();
customViewCallback = getFragment().chromeClient.getCustomViewCallback();
}
if ((customView == null)
&& getFragment().browser.canGoBack()) {
getFragment().browser.goBack();
} else if (customView != null
&& customViewCallback != null) {
customViewCallback.onCustomViewHidden();
} else {
super.onBackPressed();
}
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu, menu);
//Adjust menu item visibility/availability based on settings
if (Config.HIDE_MENU_SHARE) {
menu.findItem(R.id.share).setVisible(false);
}
if (Config.HIDE_MENU_HOME) {
menu.findItem(R.id.home).setVisible(false);
}
if (Config.HIDE_MENU_NAVIGATION){
menu.findItem(R.id.previous).setVisible(false);
menu.findItem(R.id.next).setVisible(false);
}
if (!Config.SHOW_NOTIFICATION_SETTINGS || Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP){
menu.findItem(R.id.notification_settings).setVisible(false);
}
ThemeUtils.tintAllIcons(menu, this);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
WebView browser = getFragment().browser;
if (item.getItemId() == (R.id.next)) {
browser.goForward();
return true;
} else if (item.getItemId() == R.id.previous) {
browser.goBack();
return true;
} else if (item.getItemId() == R.id.share) {
getFragment().shareURL();
return true;
} else if (item.getItemId() == R.id.about) {
AboutDialog();
return true;
} else if (item.getItemId() == R.id.home) {
browser.loadUrl(getFragment().mainUrl);
return true;
} else if (item.getItemId() == R.id.close) {
finish();
Toast.makeText(getApplicationContext(),
getText(R.string.exit_message), Toast.LENGTH_SHORT).show();
return true;
} else if (item.getItemId() == R.id.notification_settings){
Intent intent = new Intent();
intent.setAction("android.settings.APP_NOTIFICATION_SETTINGS");
intent.putExtra("app_package", getPackageName());
intent.putExtra("app_uid", getApplicationInfo().uid);
intent.putExtra("android.provider.extra.APP_PACKAGE", getPackageName());
startActivity(intent);
}
return super.onOptionsItemSelected(item);
}
#Override
protected void onPause() {
super.onPause();
}
#Override
protected void onResume() {
super.onResume();
}
/**
* Showing the About Dialog
*/
private void AboutDialog() {
// setting the dialogs text, and making the links clickable
final TextView message = new TextView(this);
// i.e.: R.string.dialog_message =>
final SpannableString s = new SpannableString(
this.getText(R.string.dialog_about));
Linkify.addLinks(s, Linkify.WEB_URLS);
message.setTextSize(15f);
int padding = Math.round(20 * getResources().getDisplayMetrics().density);
message.setPadding(padding, 15, padding, 15);
message.setText(Html.fromHtml(getString(R.string.dialog_about)));
message.setMovementMethod(LinkMovementMethod.getInstance());
// creating the actual dialog
AlertDialog.Builder AlertDialog = new AlertDialog.Builder(this);
AlertDialog.setTitle(Html.fromHtml(getString(R.string.about)))
// .setTitle(R.string.about)
.setCancelable(true)
// .setIcon(android.R.drawable.ic_dialog_info)
.setPositiveButton("ok", null).setView(message).create().show();
}
/**
* Set the ActionBar Title
* #param title title
*/
public void setTitle(String title) {
if (mAdapter != null && mAdapter.getCount() == 1 && !Config.USE_DRAWER && !Config.STATIC_TOOLBAR_TITLE)
getSupportActionBar().setTitle(title);
}
/**
* #return the Current WebFragment
*/
public WebFragment getFragment(){
return (WebFragment) mAdapter.getCurrentFragment();
}
/**
* Hide the Splash Screen
*/
public void hideSplash() {
if (Config.SPLASH) {
if (findViewById(R.id.imageLoading1).getVisibility() == View.VISIBLE) {
Handler mHandler = new Handler();
mHandler.postDelayed(new Runnable() {
public void run() {
// hide splash image
findViewById(R.id.imageLoading1).setVisibility(
View.GONE);
}
// set a delay before splashscreen is hidden
}, Config.SPLASH_SCREEN_DELAY);
}
}
}
/**
* Hide the toolbar
*/
public void hideToolbar() {
if (CurrentAnimation != HIDING) {
CurrentAnimation = HIDING;
AnimatorSet animSetXY = new AnimatorSet();
ObjectAnimator animY = ObjectAnimator.ofFloat(getFragment().rl, "y", 0);
ObjectAnimator animY1 = ObjectAnimator.ofFloat(mHeaderView, "y", -getActionBarHeight());
animSetXY.playTogether(animY, animY1);
animSetXY.start();
animSetXY.addListener(new Animator.AnimatorListener() {
#Override
public void onAnimationStart(Animator animation) {
}
#Override
public void onAnimationEnd(Animator animation) {
CurrentAnimation = NO;
}
#Override
public void onAnimationCancel(Animator animation) {
}
#Override
public void onAnimationRepeat(Animator animation) {
}
});
}
}
/**
* Show the toolbar
* #param fragment for which to show the toolbar
*/
public void showToolbar(WebFragment fragment) {
if (CurrentAnimation != SHOWING || fragment != CurrentAnimatingFragment) {
CurrentAnimation = SHOWING;
CurrentAnimatingFragment = fragment;
AnimatorSet animSetXY = new AnimatorSet();
ObjectAnimator animY = ObjectAnimator.ofFloat(fragment.rl, "y", getActionBarHeight());
ObjectAnimator animY1 = ObjectAnimator.ofFloat(mHeaderView, "y", 0);
animSetXY.playTogether(animY, animY1);
animSetXY.start();
animSetXY.addListener(new Animator.AnimatorListener() {
#Override
public void onAnimationStart(Animator animation) {
}
#Override
public void onAnimationEnd(Animator animation) {
CurrentAnimation = NO;
CurrentAnimatingFragment = null;
}
#Override
public void onAnimationCancel(Animator animation) {
}
#Override
public void onAnimationRepeat(Animator animation) {
}
});
}
}
public int getActionBarHeight() {
int mHeight = mToolbar.getHeight();
//Just in case we get a unreliable result, get it from metrics
if (mHeight == 0){
TypedValue tv = new TypedValue();
if (getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true))
{
mHeight = TypedValue.complexToDimensionPixelSize(tv.data,getResources().getDisplayMetrics());
}
}
return mHeight;
}
boolean getHideTabs(){
if (mAdapter.getCount() == 1 || Config.USE_DRAWER){
return true;
} else {
return Config.HIDE_TABS;
}
}
public static boolean getCollapsingActionBar(){
if (Config.COLLAPSING_ACTIONBAR && !Config.HIDE_ACTIONBAR){
return true;
} else {
return false;
}
}
/**
* Check permissions on app start
* #param context
* #param permissions Permissions to check
* #return if the permissions are available
*/
private static boolean hasPermissionToDo(final Activity context, final String[] permissions) {
boolean oneDenied = false;
for (String permission : permissions) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M &&
ContextCompat.checkSelfPermission(context, permission)
!= PackageManager.PERMISSION_GRANTED)
oneDenied = true;
}
if (!oneDenied) return true;
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setMessage(R.string.common_permission_explaination);
builder.setPositiveButton(R.string.common_permission_grant, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// Fire off an async request to actually get the permission
// This will show the standard permission request dialog UI
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
context.requestPermissions(permissions,1);
}
});
AlertDialog dialog = builder.create();
dialog.show();
return false;
}
/**
* Show an interstitial ad
*/
public void showInterstitial(){
if (interstitialCount == (Config.INTERSTITIAL_INTERVAL - 1)) {
if (mInterstitialAd != null && mInterstitialAd.isLoaded()) {
mInterstitialAd.show();
}
interstitialCount = 0;
} else {
interstitialCount++;
}
}
/**
* Configure the navigationView
* #param menu to modify
*/
public void configureMenu(SimpleMenu menu){
for (int i = 0; i < Config.TITLES.length; i++) {
//The title
String title = null;
Object titleObj = Config.TITLES[i];
if (titleObj instanceof Integer && !titleObj.equals(0)) {
title = getResources().getString((int) titleObj);
} else {
title = (String) titleObj;
}
//The icon
int icon = 0;
if (Config.ICONS.length > i)
icon = Config.ICONS[i];
menu.add((String) Config.TITLES[i], icon, new Action(title, Config.URLS[i]));
}
menuItemClicked(menu.getFirstMenuItem().getValue(), menu.getFirstMenuItem().getKey());
}
#Override
public void menuItemClicked(Action action, MenuItem item) {
if (WebToAppWebClient.urlShouldOpenExternally(action.url)){
//Load url outside WebView
try {
startActivity(
new Intent(Intent.ACTION_VIEW, Uri.parse(action.url)));
} catch(ActivityNotFoundException e) {
if (action.url.startsWith("intent://")) {
startActivity(
new Intent(Intent.ACTION_VIEW, Uri.parse(action.url.replace("intent://", "http://"))));
} else {
Toast.makeText(this, getResources().getString(R.string.no_app_message), Toast.LENGTH_LONG).show();
}
}
} else {
//Uncheck all other items, check the current item
for (MenuItem menuItem : menu.getMenuItems())
menuItem.setChecked(false);
item.setChecked(true);
//Close the drawer
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
//Load the url
if (getFragment() == null) return;
getFragment().browser.loadUrl("about:blank");
getFragment().setBaseUrl(action.url);
//Show intersitial if applicable
showInterstitial();
Log.v("INFO", "Drawer Item Selected");
}
}
}
This is not comprehensive solution for sure, but I just implement these kind of features for my own app.
If you just want to limit the frequency of the ads showing, in AdMob, you can set limit how often per time unit the add can be shown. AdMob help for setting frequency capping
Another way of limiting the ads could be achieved using probability.
Add proper probability value for your case like this to make ad to shown only every once in a while:
private void showInterstitial(Boolean AdsEnabled) {
final int random = new Random().nextInt(101);
if(random > 95 && AdsEnabled){
if (mInterstitialAd != null && mInterstitialAd.isLoaded() ) {
mInterstitialAd.show();
Log.i("ads","Interstiade ad shown");
} else {
//Do something else
Log.i("ads","Interstiade ad was not loaded");
}
}
}
You can tune your ads to show up more natural using both of these features.
And for why you don't see any ads right now. I might be too beginner my self too, to see why this is the case. But I would add this kind of loader for each backspace press to make sure the ad is loaded. At least I have seen, that sometimes ads fails to load, and this works for me. I have this piece of code used every time I try to show the add.
if (!mInterstitialAd.isLoading() && !mInterstitialAd.isLoaded()) {
Log.i("ads", "Loading new add, because there was no ad ready");
AdRequest adRequest = new AdRequest.Builder().build();
mInterstitialAd.loadAd(adRequest);
}
It sees to me, that you load the ad when you initialise the ad, and at ad close. But if the ad fails to load at oncreate, do you have the ad close events at all to reload the ad?
I also wonder this
public void showInterstitial(){
if (interstitialCount == (Config.INTERSTITIAL_INTERVAL - 1)) {
this shows the ad only when these values are equal. So are you sure that Config.INTERSTITIAL_INTERVAL is at least 1? I think you should change "==" to ">=" to make sure you show the ads even if the INTERSTITIAL_INTERVAL is zero or negative. Or get rid of the minus 1 and keep Config.INTERSTITIAL_INTERVAL positive integer. You have interstitialCount initialised -1 at beginning so this should so the first ad one click later than the next ads, but again, I'm not sure why the ads are not shown right now.
I hope these answers helped you. But as I said, I'm still beginner my self.
-Jussi

Recyclerview Adapter not refreshing

I have a mind-boggling problem I can't seem to solve.
The data in my RecyclerView is not updating, and after an entire day of debugging, I can't find the problematic code. The API returns the correct data, and I parse the correct data in a wallItemList which I pass to the Adapter.
How It Should Behave
After changing the language setting to either one of the 2 (English or Dutch), the items in my Recyclerview should update with it and the title of the element should change to the translated string.
What I Have Tried
Creating a refresh function inside the adapter, and update the wallItemList manually by passing the created wallItemList from the MainActivity and calling notifyDataSetChanged()
Calling notifyDataSetChanged() before, in and after the OnClickListener in the MyRecyclerViewAdapter
Setting the item in onBindViewHolder in the MyRecyclerViewAdapter
Strangely enough, when logging the language of the wallItem just before adapter.setOnItemClickListener in populateRecyclerView(), the language is right. But when I get the string from the object in MyRecyclerViewAdapter's onBindViewHolder, it shows the wrong language.
Here is my MainActivity.java:
public class MainActivity extends AppCompatActivity implements SharedPreferences.OnSharedPreferenceChangeListener {
private List<WallItem> WallItemList;
private RecyclerView mRecyclerView;
private MyRecyclerViewAdapter adapter;
private ProgressBar progressBar;
// LifeCycle variables
private String JSONResults = "";
final static private String JSON_KEY_RESULTS = "";
final static private String WALL_ITEM_LIST_KEY = "";
// SharedPrefences variables
private String APIUrlPreferenceString = "";
private String langPreferenceString = "";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
progressBar = (ProgressBar) findViewById(R.id.progress_bar);
// Setup shared preferences
setupSharedPreferences();
// Load the recyclerView
loadRecyclerView(savedInstanceState);
}
private void setLanguageSettings(String lang)
{
//create a string for country
String country = "";
if(lang.equals("en"))
{
country = "EN";
}
else if(lang.equals("nl"))
{
country = "NL";
}
//use constructor with country
Locale locale = new Locale(lang, country);
Locale.setDefault(locale);
Configuration config = new Configuration();
config.locale = locale;
getBaseContext().getResources().updateConfiguration(config,
getBaseContext().getResources().getDisplayMetrics());
}
private void setupSharedPreferences()
{
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
APIUrlPreferenceString = sharedPreferences.getString(getString(R.string.pref_api_url_key), getString(R.string.pref_api_url_def_value));
sharedPreferences.registerOnSharedPreferenceChangeListener(this);
// Language settings
if(sharedPreferences.getBoolean(getString(R.string.pref_lang_check_key), true))
{
// Use device settings
setLanguageSettings(Resources.getSystem().getConfiguration().locale.getLanguage());
langPreferenceString = Resources.getSystem().getConfiguration().locale.getLanguage();
}
else
{
// Use preference settings
setLanguageSettings(sharedPreferences.getString(getString(R.string.pref_lang_list_key), getString(R.string.pref_lang_label_en)));
langPreferenceString = sharedPreferences.getString(getString(R.string.pref_lang_list_key), getString(R.string.pref_lang_label_en));
}
}
private void loadRecyclerView(Bundle savedInstanceState)
{
// Lifecycle event to preserve data to prevent repeating API calls
if(savedInstanceState != null && savedInstanceState.containsKey(WALL_ITEM_LIST_KEY) && savedInstanceState.containsKey(JSON_KEY_RESULTS))
{
progressBar.setVisibility(View.GONE);
// Set again in order to preserve state on future rotations
JSONResults = savedInstanceState.getString(JSON_KEY_RESULTS);
// Set wallItemList again in order to preserve state on future rotations
WallItemList = savedInstanceState.getParcelableArrayList(WALL_ITEM_LIST_KEY);
populateRecyclerView();
}
else
{
// First execution
new DownloadTask().execute();
}
}
public class DownloadTask extends AsyncTask<Void, Void, Boolean> {
#Override
protected void onPreExecute() {
progressBar.setVisibility(View.VISIBLE);
}
#Override
protected Boolean doInBackground(Void... params) {
boolean result;
String blindWallResults;
try {
// Error fix, because NetworkUtils.buildUrl returns null when failing
if(null == NetworkUtils.buildUrl(APIUrlPreferenceString))
return false;
// Get response from API
blindWallResults = NetworkUtils.getResponseFromHttpUrl(NetworkUtils.buildUrl(APIUrlPreferenceString));
// Send to parser
JSONResults = blindWallResults;
parseResult(blindWallResults);
result = true;
} catch (IOException e) {
e.printStackTrace();
result = false;
}
// When failed
return result;
}
#Override
protected void onPostExecute(Boolean result) {
progressBar.setVisibility(View.GONE);
// If succeeded
if (result) {
populateRecyclerView();
// Show toast when data has been loaded for the first time
Toast.makeText(MainActivity.this, getString(R.string.json_toast_data_loaded), Toast.LENGTH_SHORT).show();
} else {
// If failed make toast
Toast.makeText(MainActivity.this, getString(R.string.json_toast_data_failed), Toast.LENGTH_SHORT).show();
}
}
}
/**
* Populates recyclerView and adds OnItemClickListener
*/
private void populateRecyclerView()
{
WallItem w = WallItemList.get(0);
adapter = new MyRecyclerViewAdapter(MainActivity.this, WallItemList);
mRecyclerView.setAdapter(adapter);
adapter.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(WallItem item) {
// Function to start new activity
Class detailActivity = DetailActivity.class;
// Create intent
Intent startDetailActivityIntent = new Intent(MainActivity.this, detailActivity);
// Add object to intent
startDetailActivityIntent.putExtra("detailWallItem", (Parcelable)item);
// Start activity
startActivity(startDetailActivityIntent);
}
});
}
#Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
// Save instances of existing objects
outState.putString(JSON_KEY_RESULTS, JSONResults);
outState.putParcelableArrayList(WALL_ITEM_LIST_KEY, (ArrayList<? extends Parcelable>) this.WallItemList);
}
/**
* Parses JSON result
*
* #param result
*/
private void parseResult(String result) {
WallItemList = new ArrayList<>();
try {
JSONArray mJsonArray = new JSONArray(result);
// Loop through JSON array
for (int i = 0; i < mJsonArray.length(); i++) {
// Get picture URI fragment from JSON
String pictureURIFragment = mJsonArray.getJSONObject(i)
.getJSONArray("images").getJSONObject(0)
.getString("url");
// Load images into String
JSONArray JSONImageArray = mJsonArray.getJSONObject(i)
.getJSONArray("images");
// Create array for wallItem
String[] imageArray = new String[JSONImageArray.length()];
// Loop through JSONArray
for(int x = 0; x < JSONImageArray.length(); x++)
{
String pictureURLFragment = JSONImageArray.getJSONObject(x).getString("url");
// Built picture
URL pictureURL = NetworkUtils.builtPictureUrl(pictureURLFragment.toLowerCase());
imageArray[x] = java.net.URLDecoder.decode(pictureURL.toString());
}
// Built picture
URL pictureURL = NetworkUtils.builtPictureUrl(pictureURIFragment.toLowerCase());
String cleanPictureUrl = java.net.URLDecoder.decode(pictureURL.toString());
// add wall item to the list
WallItem item = new WallItem();
// Set fields of wallItem
item.setThumbnail(cleanPictureUrl);
item.setTitle(mJsonArray.getJSONObject(i).getString("author"));
item.setPhotographer(mJsonArray.getJSONObject(i).getString("photographer"));
item.setAddress(mJsonArray.getJSONObject(i).getString("address"));
item.setMaterial(mJsonArray.getJSONObject(i).getJSONObject("material").getString(langPreferenceString));
item.setDescription(mJsonArray.getJSONObject(i).getJSONObject("description").getString(langPreferenceString));
item.setImgURLArray(imageArray);
// Add wallItem to list
WallItemList.add(item);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if(item.getItemId() == R.id.api_url_settings_item)
{
Intent startSettingsActivity = new Intent(this, SettingsActivity.class);
startActivity(startSettingsActivity);
return true;
}
return super.onOptionsItemSelected(item);
}
private void getDeviceLanguage()
{
Log.d("HERE", Locale.getDefault().getLanguage());
}
#Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
if(key.equals(getString(R.string.pref_api_url_key)))
{
// Update String again
APIUrlPreferenceString = sharedPreferences.getString(getString(R.string.pref_api_url_key), getString(R.string.pref_api_url_def_value));
new DownloadTask().execute();
}
if(key.equals(getString(R.string.pref_lang_check_key)))
{
// 1. If true, use system language.
// 2. if System language != en or nl, use default language: en.
// 3. if false, make selectable
}
if(key.equals(getString(R.string.pref_lang_list_key)) || key.equals(getString(R.string.pref_lang_check_key)))
{
// Language settings
if(sharedPreferences.getBoolean(getString(R.string.pref_lang_check_key), true))
{
// Use device settings
setLanguageSettings(Resources.getSystem().getConfiguration().locale.getLanguage());
langPreferenceString = Resources.getSystem().getConfiguration().locale.getLanguage();
}
else
{
// Use preference settings
setLanguageSettings(sharedPreferences.getString(getString(R.string.pref_lang_list_key), getString(R.string.pref_lang_label_en)));
langPreferenceString = sharedPreferences.getString(getString(R.string.pref_lang_list_key), getString(R.string.pref_lang_label_en));
}
// Reload data after executing new Download task
new DownloadTask().execute();
this.recreate();
}
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
}
#Override
protected void onDestroy() {
super.onDestroy();
PreferenceManager.getDefaultSharedPreferences(this).unregisterOnSharedPreferenceChangeListener(this);
}
}
Here is my MyRecyclerViewAdapter.java
public class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.CustomViewHolder> {
private List<WallItem> wallItemList;
private Context mContext;
private OnItemClickListener onItemClickListener;
public MyRecyclerViewAdapter(Context context, List<WallItem> wallItemList) {
this.wallItemList = wallItemList;
this.mContext = context;
WallItem w = wallItemList.get(0);
}
#Override
public CustomViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_row, null);
CustomViewHolder viewHolder = new CustomViewHolder(view);
return viewHolder;
}
#Override
public void onBindViewHolder(CustomViewHolder customViewHolder, int i) {
final WallItem wallItem = wallItemList.get(i);
//Download image using picasso library
if (!TextUtils.isEmpty(wallItem.getThumbnail())) {
// Load image into imageView
Picasso.with(mContext).load(wallItem.getThumbnail())
.error(R.drawable.placeholder)
.placeholder(R.drawable.placeholder)
.into(customViewHolder.imageView);
}
//Setting text view title
customViewHolder.textView.setText(Html.fromHtml(wallItem.getMaterial()));
// Set OnClickListener to wallItem
View.OnClickListener listener = new View.OnClickListener() {
#Override
public void onClick(View v) {
onItemClickListener.onItemClick(wallItem);
}
};
customViewHolder.imageView.setOnClickListener(listener);
customViewHolder.textView.setOnClickListener(listener);
}
// Overwrite to return
#Override
public int getItemCount() {
return (null != wallItemList ? wallItemList.size() : 0);
}
class CustomViewHolder extends RecyclerView.ViewHolder {
protected ImageView imageView;
protected TextView textView;
public CustomViewHolder(View view) {
super(view);
this.imageView = (ImageView) view.findViewById(R.id.thumbnail);
this.textView = (TextView) view.findViewById(R.id.title);
}
}
public OnItemClickListener getOnItemClickListener() {
return onItemClickListener;
}
public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
this.onItemClickListener = onItemClickListener;
}
}
My apologies for posting all the code but I can't identify the crucial points and don't have enough experience to pinpoint where it's going wrong. If anyone could help you would it would be greatly appreciated!
I suggest you to initialize and set the adapter in onCreate() method with an empty array of WallItems.
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
adapter = new MyRecyclerViewAdapter(MainActivity.this, new ArrayList<WallItem>());
mRecyclerView.setAdapter(adapter);
progressBar = (ProgressBar) findViewById(R.id.progress_bar);
// Setup shared preferences
setupSharedPreferences();
// Load the recyclerView
loadRecyclerView(savedInstanceState);
}
To update the list of items, I normally have a setItems method inside my adapter that updates the list and calls notifyDataSetChanged()
public class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.CustomViewHolder> {
...
public void setItems(List<WallItem> items) {
this.wallItemList = wallItemList;
notifyDataSetChanged();
}
}
Your populateRecyclerView method then should call the setItems method to update the new list of items.
private void populateRecyclerView()
{
WallItem w = WallItemList.get(0);
adapter.setItems(WallItemList);
adapter.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(WallItem item) {
// Function to start new activity
Class detailActivity = DetailActivity.class;
// Create intent
Intent startDetailActivityIntent = new Intent(MainActivity.this, detailActivity);
// Add object to intent
startDetailActivityIntent.putExtra("detailWallItem", (Parcelable)item);
// Start activity
startActivity(startDetailActivityIntent);
}
});
}
I didn't test, buy this is how I normally use RecyclerView.

Automatic reload webview when internet connection change

When connection get back I want to run this task, I want to call NewortchangeReceiver() constructor. I wrote "android.net.conn.CONNECTIVITY_CHANGE" in Mainactivity IntentFilter because "android.net.conn.CONNECTIVITY_CHANGE" not work in androidmanifest.xml in android N (7). I want to automatic reload webview at internet connection change.
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
wvDailyDarshan = (WebView) findViewById(R.id.wvDailyDarshan);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
IntentFilter intentFilter = new IntentFilter("android.net.conn.CONNECTIVITY_CHANGE");
context.registerReceiver(new NetworkChangeReceiver(), intentFilter);
Boolean connection = isNetworkConnected();
if (connection == false) {
Snackbar.make(this.getWindow().getDecorView().findViewById(android.R.id.content), "Please check your Internet Connection", Snackbar.LENGTH_SHORT).show();
} else if (connection == true) {
wvDailyDarshan.getSettings().setJavaScriptEnabled(true);
//wvDailyDarshan.loadUrl("http://www.swaminarayanbhagwan.com/daily-darshan/");
wvDailyDarshan.setWebViewClient(new myWebClient());
wvDailyDarshan.getSettings().setJavaScriptEnabled(true);
wvDailyDarshan.getSettings().setBuiltInZoomControls(true);
wvDailyDarshan.getSettings().setDisplayZoomControls(false);
wvDailyDarshan.loadUrl("https://www.google.co.in/");
}
}
What I get from your question is that you want to get callback when there is change in connectivity.
So I'll answer for that.
NetworkChangeReceiver:
public class NetworkChangeReceiver extends BroadcastReceiver {
ConnectionChangeCallback connectionChangeCallback;
#Override
public void onReceive(Context context, Intent intent) {
ConnectivityManager cm = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
boolean isConnected = activeNetwork != null
&& activeNetwork.isConnectedOrConnecting();
if (connectionChangeCallback != null) {
connectionChangeCallback.onConnectionChange(isConnected);
}
}
public void setConnectionChangeCallback(ConnectionChangeCallback
connectionChangeCallback) {
this.connectionChangeCallback = connectionChangeCallback;
}
public interface ConnectionChangeCallback {
void onConnectionChange(boolean isConnected);
}
}
Now your Activity should call setConnectionChangeCallback on BraodCastReceiver ie NetworkChangeReceiver's object and provide ConnectionChangeCallback's implementation.
Which may look like this.
Activity:
public class YourActivity implments NetworkChangeReceiver.ConnectionChangeCallback
{
#Override
protected void onCreate(Bundle savedInstanceState) {
.....
IntentFilter intentFilter = new
IntentFilter("android.net.conn.CONNECTIVITY_CHANGE");
NetworkChangeReceiver networkChangeReceiver = new NetworkChangeReceiver();
registerReceiver(networkChangeReceiver, intentFilter);
networkChangeReceiver.setConnectionChangeCallback(this);
}
#Override
public void onConnectionChange(boolean isConnected) {
if(isConnected){
// will be called when internet is back
}
else{
// will be called when internet is gone.
}
}
}
You can create a new method, which will call itself if internet is not connected. A rough example is below. Change it to more efficient way.
private boolean shoudShowSnackbar = true;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
wvDailyDarshan = (WebView) findViewById(R.id.wvDailyDarshan);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
IntentFilter intentFilter = new IntentFilter("android.net.conn.CONNECTIVITY_CHANGE");
context.registerReceiver(new NetworkChangeReceiver(), intentFilter);
doThisThingIfFoundInternet();
}
private void doThisThingIfFoundInternet() {
if (isNetworkConnected()) {
wvDailyDarshan.getSettings().setJavaScriptEnabled(true);
//wvDailyDarshan.loadUrl("http://www.swaminarayanbhagwan.com/daily-darshan/");
wvDailyDarshan.setWebViewClient(new myWebClient());
wvDailyDarshan.getSettings().setJavaScriptEnabled(true);
wvDailyDarshan.getSettings().setBuiltInZoomControls(true);
wvDailyDarshan.getSettings().setDisplayZoomControls(false);
wvDailyDarshan.loadUrl("https://www.google.co.in/");
}else{
if (this.shoudShowSnackbar) {
Snackbar.make(this.getWindow().getDecorView().findViewById(android.R.id.content), "Please check your Internet Connection", Snackbar.LENGTH_SHORT).show();
shoudShowSnackbar = !shoudShowSnackbar;
}
doThisThingIfFoundInternet();
}
}

Data transfer between the Activities of Android

I have problem I create small application with first get sms code if length it is greater than six go to activity B. Activity B show scan QR Code. Scan QR Code use library google play services vision to scan QR Code. Get value with barcode and make mix with sms code if value is correct go to Activity C if not go to activity A. My question how get value sms code and barcode value and where make ctrytography.
this is class with get sms code
public class SmsCodeActivity extends AppCompatActivity implements View.OnClickListener {
#Override
protected void attachBaseContext(Context newBase) {
super.attachBaseContext(newBase);
}
public final static String EXTRA_MESSAGE = "smsCode";
private EditText smsCode;
private Button checkSmsCodeButton;
private TextView text_info;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sms_code);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setNavigationIcon(R.drawable.ic_restart);
Typeface custom_fonts = Typeface.createFromAsset(getAssets(), "fonts/OpenSans-Light.ttf");
Typeface custom_fonts2 = Typeface.createFromAsset(getAssets(), "fonts/OpenSans-Regular.ttf");
TextView titleActivity = (TextView) findViewById(R.id.smsTitle);
titleActivity.setTypeface(custom_fonts2);
TextView subtitleApplication = (TextView) findViewById(R.id.stage1TextView);
subtitleApplication.setTypeface(custom_fonts2);
TextView subtitleText = (TextView) findViewById(R.id.subtitle_text);
subtitleText.setTypeface(custom_fonts);
text_info = (TextView) findViewById(text_Info);
text_info.setTypeface(custom_fonts2);
text_info.setVisibility(View.INVISIBLE);
smsCode = (EditText) findViewById(R.id.editTextSmsCode);
smsCode.setTypeface(custom_fonts);
checkSmsCodeButton = (Button) findViewById(R.id.buttonSmsCode);
checkSmsCodeButton.setTypeface(custom_fonts2);
checkSmsCodeButton.setOnClickListener(this);
setSupportActionBar(toolbar);
}
#Override
public void onClick(View v) {
if (v.getId() == R.id.buttonSmsCode) {
String smsText = smsCode.getText().toString();
if (smsText.isEmpty()) {
text_info.setVisibility(View.VISIBLE);
text_info.setText("Nie podałeś SMS Kodu");
} else if (smsText.length() < 6) {
text_info.setVisibility(View.VISIBLE);
text_info.setText("Podany SMS Kod jest za krótki");
} else if (smsText.length() == 6) {
Intent intent = new Intent(SmsCodeActivity.this, ScanQrCodeActivity.class);
intent.putExtra(EXTRA_MESSAGE, smsText);
startActivity(intent);
}
}
}
}
this is class with Scan OR Code
public class ScanQrCodeActivity extends AppCompatActivity {
SurfaceView cameraPreview;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scan_qr_code);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
toolbar.setNavigationIcon(R.drawable.ic_restart);
Typeface custom_fonts = Typeface.createFromAsset(getAssets(), "fonts/OpenSans-Regular.ttf");
TextView title_app = (TextView) findViewById(R.id.title_application_scan);
title_app.setTypeface(custom_fonts);
cameraPreview = (SurfaceView) findViewById(R.id.cameraPreview);
createCameraSource();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
}
private void createCameraSource() {
BarcodeDetector barcodeDetector = new BarcodeDetector.Builder(this).build();
final CameraSource cameraSource = new CameraSource.Builder(this, barcodeDetector)
.setAutoFocusEnabled(true)
.setRequestedPreviewSize(1600, 1024)
.build();
cameraPreview.getHolder().addCallback(new SurfaceHolder.Callback() {
#Override
public void surfaceCreated(SurfaceHolder holder) {
if (PackageManager.PERMISSION_GRANTED == ActivityCompat.checkSelfPermission(ScanQrCodeActivity.this, Manifest.permission.CAMERA)) {
try {
cameraSource.start(cameraPreview.getHolder());
} catch (IOException e) {
e.printStackTrace();
}
} else {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
cameraSource.stop();
}
});
barcodeDetector.setProcessor(new Detector.Processor<Barcode>() {
#Override
public void release() {
}
#Override
public void receiveDetections(Detector.Detections<Barcode> detections) {
final SparseArray<Barcode> barcodes = detections.getDetectedItems();
if (barcodes.size() > 0) {
}
}
});
}
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
public Action getIndexApiAction() {
Thing object = new Thing.Builder()
.setName("ScanQrCode Page") // TODO: Define a title for the content shown.
// TODO: Make sure this auto-generated URL is correct.
.setUrl(Uri.parse("http://[ENTER-YOUR-URL-HERE]"))
.build();
return new Action.Builder(Action.TYPE_VIEW)
.setObject(object)
.setActionStatus(Action.STATUS_TYPE_COMPLETED)
.build();
}
#Override
public void onStart() {
super.onStart();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client.connect();
AppIndex.AppIndexApi.start(client, getIndexApiAction());
}
#Override
public void onStop() {
super.onStop();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
AppIndex.AppIndexApi.end(client, getIndexApiAction());
client.disconnect();
}
}
I think you need to get into Intents:
https://developer.android.com/guide/components/intents-filters.html
sending:
String text = "some text here";
Intent i = new Intent(this, ActivityB.class);
i.putExtra("interesting_text", text);
startActivity(i);
receiving:
Intent intent = getIntent();
String text = intent.getExtras().getString("interesting_text");

Googleplus logout is not working in android application

In my application and using google plus login,the login functionality is working fine but i can't able to google plus logout from the application am using navigation drawer for my application so please help me...
Login Class
public class LoginActivity extends Activity implements OnClickListener,
ConnectionCallbacks, OnConnectionFailedListener {
private static final int RC_SIGN_IN = 0;
// Logcat tag
private static final String TAG = "LoginActivity";
// Profile pic image size in pixels
private static final int PROFILE_PIC_SIZE = 400;
// Google client to interact with Google API
private GoogleApiClient mGoogleApiClient;
/**
* A flag indicating that a PendingIntent is in progress and prevents us
* from starting further intents.
*/
private boolean mIntentInProgress;
private boolean mSignInClicked;
private ConnectionResult mConnectionResult;
private SignInButton btnSignIn;
private Button btnSignOut, btnRevokeAccess;
private ImageView imgProfilePic;
private TextView txtName, txtEmail;
private LinearLayout llProfileLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login_activity);
btnSignIn = (SignInButton) findViewById(R.id.btn_sign_in);
btnSignOut = (Button) findViewById(R.id.btn_sign_out);
btnRevokeAccess = (Button) findViewById(R.id.btn_revoke_access);
imgProfilePic = (ImageView) findViewById(R.id.imgProfilePic);
txtName = (TextView) findViewById(R.id.txtName);
txtEmail = (TextView) findViewById(R.id.txtEmail);
llProfileLayout = (LinearLayout) findViewById(R.id.llProfile);
// Button click listeners
btnSignIn.setOnClickListener(this);
btnSignOut.setOnClickListener(this);
btnRevokeAccess.setOnClickListener(this);
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this).addApi(Plus.API)
.addScope(Plus.SCOPE_PLUS_LOGIN).build();
}
protected void onStart() {
super.onStart();
mGoogleApiClient.connect();
}
protected void onStop() {
super.onStop();
if (mGoogleApiClient.isConnected()) {
mGoogleApiClient.disconnect();
}
}
/**
* Method to resolve any signin errors
* */
private void resolveSignInError() {
if (mConnectionResult.hasResolution()) {
try {
mIntentInProgress = true;
mConnectionResult.startResolutionForResult(this, RC_SIGN_IN);
} catch (SendIntentException e) {
mIntentInProgress = false;
mGoogleApiClient.connect();
}
}
}
#Override
public void onConnectionFailed(ConnectionResult result) {
if (!result.hasResolution()) {
GooglePlayServicesUtil.getErrorDialog(result.getErrorCode(), this,
0).show();
return;
}
if (!mIntentInProgress) {
// Store the ConnectionResult for later usage
mConnectionResult = result;
if (mSignInClicked) {
// The user has already clicked 'sign-in' so we attempt to
// resolve all
// errors until the user is signed in, or they cancel.
resolveSignInError();
}
}
}
#Override
protected void onActivityResult(int requestCode, int responseCode,
Intent intent) {
if (requestCode == RC_SIGN_IN) {
if (responseCode != RESULT_OK) {
mSignInClicked = false;
}
mIntentInProgress = false;
if (!mGoogleApiClient.isConnecting()) {
mGoogleApiClient.connect();
}
}
}
#Override
public void onConnected(Bundle arg0) {
mSignInClicked = false;
Toast.makeText(this, "User is connected!", Toast.LENGTH_LONG).show();
// Get user's information
// getProfileInformation();
// Update the UI after signin
updateUI(true);
}
/**
* Updating the UI, showing/hiding buttons and profile layout
* */
private void updateUI(boolean isSignedIn) {
if (isSignedIn) {
btnSignIn.setVisibility(View.GONE);
Intent gd=new Intent(getApplicationContext(),MainActivity.class);
startActivity(gd);
/*btnSignOut.setVisibility(View.VISIBLE);
btnRevokeAccess.setVisibility(View.VISIBLE);
llProfileLayout.setVisibility(View.VISIBLE);*/
} else {
btnSignIn.setVisibility(View.VISIBLE);
/*btnSignOut.setVisibility(View.GONE);
btnRevokeAccess.setVisibility(View.GONE);
llProfileLayout.setVisibility(View.GONE);*/
}
}
/**
* Fetching user's information name, email, profile pic
* */
/*private void getProfileInformation() {
try {
if (Plus.PeopleApi.getCurrentPerson(mGoogleApiClient) != null) {
Person currentPerson = Plus.PeopleApi
.getCurrentPerson(mGoogleApiClient);
String personName = currentPerson.getDisplayName();
String personPhotoUrl = currentPerson.getImage().getUrl();
String personGooglePlusProfile = currentPerson.getUrl();
String email = Plus.AccountApi.getAccountName(mGoogleApiClient);
Log.e(TAG, "Name: " + personName + ", plusProfile: "
+ personGooglePlusProfile + ", email: " + email
+ ", Image: " + personPhotoUrl);
txtName.setText(personName);
txtEmail.setText(email);
// by default the profile url gives 50x50 px image only
// we can replace the value with whatever dimension we want by
// replacing sz=X
personPhotoUrl = personPhotoUrl.substring(0,
personPhotoUrl.length() - 2)
+ PROFILE_PIC_SIZE;
new LoadProfileImage(imgProfilePic).execute(personPhotoUrl);
} else {
Toast.makeText(getApplicationContext(),
"Person information is null", Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
e.printStackTrace();
}
}*/
#Override
public void onConnectionSuspended(int arg0) {
mGoogleApiClient.connect();
updateUI(false);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
/**
* Button on click listener
* */
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_sign_in:
// Signin button clicked
signInWithGplus();
break;
case R.id.btn_sign_out:
// Signout button clicked
/*signOutFromGplus();*/
break;
case R.id.btn_revoke_access:
// Revoke access button clicked
revokeGplusAccess();
break;
}
}
/**
* Sign-in into google
* */
private void signInWithGplus() {
if (!mGoogleApiClient.isConnecting()) {
mSignInClicked = true;
resolveSignInError();
}
}
/**
* Sign-out from google
* */
/*private void signOutFromGplus() {
if (mGoogleApiClient.isConnected()) {
Plus.AccountApi.clearDefaultAccount(mGoogleApiClient);
mGoogleApiClient.disconnect();
mGoogleApiClient.connect();
updateUI(false);
}
}*/
/**
* Revoking access from google
* */
private void revokeGplusAccess() {
if (mGoogleApiClient.isConnected()) {
Plus.AccountApi.clearDefaultAccount(mGoogleApiClient);
Plus.AccountApi.revokeAccessAndDisconnect(mGoogleApiClient)
.setResultCallback(new ResultCallback<Status>() {
#Override
public void onResult(Status arg0) {
Log.e(TAG, "User access revoked!");
mGoogleApiClient.connect();
updateUI(false);
}
});
}
}
/**
* Background Async task to load user profile picture from url
* */
private class LoadProfileImage extends AsyncTask<String, Void, Bitmap> {
ImageView bmImage;
public LoadProfileImage(ImageView bmImage) {
this.bmImage = bmImage;
}
protected Bitmap doInBackground(String... urls) {
String urldisplay = urls[0];
Bitmap mIcon11 = null;
try {
InputStream in = new java.net.URL(urldisplay).openStream();
mIcon11 = BitmapFactory.decodeStream(in);
} catch (Exception e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
return mIcon11;
}
protected void onPostExecute(Bitmap result) {
bmImage.setImageBitmap(result);
}
}
}
Logout Class
public class LogoutFragment extends Fragment{
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.logout, container, false);
return rootView;
}
}

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