I just make a web browser and uploaded on play store but This is not working on my some of friends device (redmi note 8),(redmi 9). when he click on link a blank page will come same as when divice is not connected to internet. my app link - https://play.google.com/store/apps/details?id=com.zimax.forxbrowser .
my java code of first page-
package com.zimax.forxbrowser;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.webkit.DownloadListener;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;
public class BrowserView extends AppCompatActivity {
private String url;
private ProgressBar progressBar;
SwipeRefreshLayout mySwipeRefreshLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_browser_view2);
final WebView webview = findViewById(R.id.webView);
final EditText urlET = findViewById(R.id.urlET);
final ImageView homeBtn = findViewById(R.id.homeIcon);
url = getIntent().getStringExtra("url");
final String urlData = url.substring(0, 4);
if(!urlData.contains("www")){
url = "www.google.com/search?q="+url;
}
urlET.setText(url);
webview.setWebViewClient(new WebViewClient(){
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
urlET.setText(url);
}
});
//Progress Bar
progressBar = (ProgressBar) findViewById(R.id.progressBar);
webview.setWebChromeClient(new WebChromeClient() {
#Override
public void onProgressChanged(WebView view, int progress) {
progressBar.setProgress(progress);
if(progress<100 && progressBar.getVisibility() == progressBar.GONE){
progressBar.setVisibility(ProgressBar.VISIBLE);
}
if(progress == 100){
progressBar.setVisibility(ProgressBar.GONE);
}
}
});
//BackButton
webview.setOnKeyListener(new View.OnKeyListener() {
#Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
WebView webView = (WebView) v;
switch(keyCode) {
case KeyEvent.KEYCODE_BACK:
if (webView.canGoBack()) {
webView.goBack();
return true;
}
break;
}
}
return false;
}
});
urlET.setOnEditorActionListener(new TextView.OnEditorActionListener() {
#Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if(actionId == EditorInfo.IME_ACTION_SEARCH){
final String urlTxt = urlET.getText().toString();
if(!urlTxt.isEmpty()){
final String urlData = urlTxt.substring(0, 4);
if(!urlData.contains("www")){
url = "www.google.com/search?q="+url;
}
else {
url = urlTxt;
}
}
}
return false;
}
});
//download any thing
webview.setDownloadListener(new DownloadListener() {
public void onDownloadStart(String url, String userAgent,
String contentDisposition, String mimetype,
long contentLength) {
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);
}
});
webview.getSettings().setJavaScriptEnabled(true);
webview.loadUrl(url);
homeBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
finish();
}
});
}
}
I am expecting to work on all android similar to working on my device.
Related
This question already has answers here:
What is a NullPointerException, and how do I fix it?
(12 answers)
Closed 2 years ago.
I Build my own file sharing and website app using android studio.
The app is a very simple file sharing and website app, for which I already had to make a lot of fixes. Everything was working fine but in some phone it crashed.
Oh boy wasn't I wrong
The app builds fine, and working perfectly in my phone, but in some phones it will crashed.
below is my Videostatis.java which is connected to my website using wenview
--CODE--
package com.IApps.IndianShareIt.fragment;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DownloadManager;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import okhttp3.Request;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.CookieManager;
import android.webkit.DownloadListener;
import android.webkit.URLUtil;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.LinearLayout;
import android.widget.Toast;
import com.IApps.IndianShareIt.ui.callback.IconSupport;
import com.IApps.IndianShareIt.ui.callback.TitleSupport;
import com.genonbeta.TrebleShot.R;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;
import static android.content.Context.DOWNLOAD_SERVICE;
import static androidx.core.content.ContextCompat.getSystemService;
/**
* A simple {#link Fragment} subclass.
*/
public class VideoStatus extends Fragment implements IconSupport, TitleSupport {
public WebView mWebView;
private Dialog loadingDialog;
private Handler handler = new Handler(){
#Override
public void handleMessage(Message message) {
switch (message.what) {
case 1:{
webViewGoBack();
}break;
}
}
};
public VideoStatus() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_video_status, container, false);
mWebView = (WebView)v.findViewById(R.id.webviewVideo);
loadingDialog = new Dialog(getActivity());
loadingDialog.setContentView(R.layout.loading);
loadingDialog.getWindow().setBackgroundDrawable(getActivity().getDrawable(R.drawable.round_btn));
loadingDialog.getWindow().setLayout(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);
loadingDialog.setCancelable(false);
WebSettings settings = mWebView.getSettings();
settings.setJavaScriptEnabled(true);
settings.setSupportZoom(false);
mWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
mWebView.getSettings().setBuiltInZoomControls(false);
// mWebView.loadUrl("https://indianshareitwhatsappstatus.blogspot.com/2020/07/blog-post.html");
mWebView.setOnKeyListener(new View.OnKeyListener(){
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK
&& event.getAction() == MotionEvent.ACTION_UP
&& mWebView.canGoBack()) {
handler.sendEmptyMessage(1);
return true;
}
return false;
}
});
mWebView.setWebViewClient(new WebViewClient());
mWebView.setDownloadListener(new DownloadListener() {
public void onDownloadStart(String url, String userAgent,
String contentDisposition, String mimetype,
long contentLength) {
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);
}
});
if(haveNetworkConnection()){
mWebView.loadUrl("https://indianshareitwhatsappstatus.blogspot.com/2020/07/blog-post.html");
mWebView.setWebViewClient(new WebViewClient(){
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
loadingDialog.show();
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
loadingDialog.dismiss();
mWebView.setVisibility(View.VISIBLE);
}
});
} else {
mWebView.loadUrl("file:///android_asset/error.html");
final Handler ha=new Handler();
ha.postDelayed(new Runnable() {
#Override
public void run() {
//call function
if (haveNetworkConnection()) {
mWebView.loadUrl("https://indianshareitwhatsappstatus.blogspot.com/2020/07/blog-post.html");
mWebView.setWebViewClient(new WebViewClient(){
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
loadingDialog.show();
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
loadingDialog.dismiss();
mWebView.setVisibility(View.VISIBLE);
}
});
return;
}
mWebView.loadUrl("file:///android_asset/error.html");
ha.postDelayed(this, 1000);
}
}, 1000);
}
mWebView.setDownloadListener(new DownloadListener()
{
#Override
public void onDownloadStart(String url, String userAgent,
String contentDisposition, String mimeType,
long contentLength) {
DownloadManager.Request request = new DownloadManager.Request(
Uri.parse(url));
request.setMimeType(mimeType);
String cookies = CookieManager.getInstance().getCookie(url);
request.addRequestHeader("cookie", cookies);
request.addRequestHeader("User-Agent", userAgent);
request.setDescription("Downloading file...");
request.setTitle(URLUtil.guessFileName(url, contentDisposition,
mimeType));
request.allowScanningByMediaScanner();
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
request.setDestinationInExternalPublicDir(
Environment.DIRECTORY_DOWNLOADS, URLUtil.guessFileName(
url, contentDisposition, mimeType));
DownloadManager dm = (DownloadManager) getActivity().getSystemService(DOWNLOAD_SERVICE);
dm.enqueue(request);
Toast.makeText(getActivity().getApplicationContext(), "Downloading File Check Your Gallery When Download is Complete",
Toast.LENGTH_LONG).show();
}});
return v;
}
#Override
public int getIconRes() {
return R.drawable.ic_slow_motion_video_black_24dp;
}
#Override
public CharSequence getTitle(Context context) {
return context.getString(R.string.video_status);
}
private void webViewGoBack(){
mWebView.goBack();
}
private boolean haveNetworkConnection() {
boolean haveConnectedWifi = false;
boolean haveConnectedMobile = false;
ConnectivityManager cm = (ConnectivityManager) getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo[] netInfo = cm.getAllNetworkInfo();
for (NetworkInfo ni : netInfo) {
if (ni.getTypeName().equalsIgnoreCase("WIFI"))
if (ni.isConnected())
haveConnectedWifi = true;
if (ni.getTypeName().equalsIgnoreCase("MOBILE"))
if (ni.isConnected())
haveConnectedMobile = true;
}
return haveConnectedWifi || haveConnectedMobile;
}
}
My app has been stopped in some phones and shows this error
Watch your API-Level in your Manifest, in some cases, people have an older one than your minimum is
I am stuck at the last phase of my project. I am developing a android webview app in which user can share the current loaded page in there social apps. My share button is in the top at the toolbar. Currently I am able to share the loaded url through the share button but when I jump to a new page and press share button, still initial loaded url is shared. Here I need to share the current url from the toolbar menu.
Please help
Following is my code
package com.newsflashjharkhand.newflash;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.support.v7.widget.Toolbar;
import android.widget.Toast;
public class NewsFlash extends AppCompatActivity {
ProgressBar superProgressBar;
ImageView superImageView;
WebView superWebView;
String mUrl = "";
private String mTitle = "";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_news_flash);
Toolbar toolbar = findViewById(R.id.toolbaar);
setSupportActionBar(toolbar);
superProgressBar = findViewById(R.id.newsprogressbar);
superImageView = findViewById(R.id.newsimage);
superWebView = findViewById(R.id.newswebview);
superProgressBar.setMax(100);
superWebView.loadUrl("https://www.google.com/");
superWebView.getSettings().setJavaScriptEnabled(true);
superWebView.setWebViewClient(new WebViewClient(){
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
mUrl = view.getUrl();
super.onPageStarted(view, url, favicon);
}
#Override
public void onPageFinished(WebView view, String url) {
mTitle = view.getTitle();
getSupportActionBar().setTitle(mTitle);
super.onPageFinished(view, url);
}
});
superWebView.setWebChromeClient(new WebChromeClient(){
#Override
public void onProgressChanged(WebView view, int newProgress) {
super.onProgressChanged(view, newProgress);
superProgressBar.setProgress(newProgress);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.main_menu, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item){
switch (item.getItemId()){
case R.id.btn_share:
Intent sharingIntent = new Intent(Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
String shareBody = mUrl;
sharingIntent.putExtra(Intent.EXTRA_TEXT, shareBody);
startActivity(Intent.createChooser(sharingIntent, "Share Using"));
break;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onBackPressed(){
if (superWebView.canGoBack()) {
superWebView.goBack();
}
else{
final AlertDialog.Builder builder = new AlertDialog.Builder(NewsFlash.this);
builder.setMessage("Are you sure you want to exit?");
builder.setCancelable(true);
builder.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.cancel();
}
});
builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
finish();
}
});
AlertDialog alertDialog = builder.create();
alertDialog.show();
}
}
}
You should set WebViewClient with your webview like below:
WebView webview = new WebView(context);
webview.setWebViewClient(new WebViewClient()
{
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
Log.d("WebView", "your current url when webpage loading.." + url);
}
#Override
public void onPageFinished(WebView view, String url) {
Log.d("WebView", "your current url when webpage loading.. finish" + url);
super.onPageFinished(view, url);
}
#Override
public void onLoadResource(WebView view, String url) {
// TODO Auto-generated method stub
super.onLoadResource(view, url);
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
System.out.println("when you click on any interlink on webview that time you got url :-" + url);
return super.shouldOverrideUrlLoading(view, url);
}
});
You can get current loaded url from shouldOverrideUrlLoading() .
I have an activity with a basic WebView. In that, I have a menu item which launches a Share intent and allows users to share the URL that they were browsing at that point of time. I also have an error HTML page which is loaded when the WebView gets any HTTP error. So, basically, I want the Share menu item to be hidden (or at least share some other URL that I can set) when that error document is loaded.
Here's my MainActiviity.java:
package com.ananya.brokenhearts;
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.webkit.WebChromeClient;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.Toast;
#SuppressWarnings("deprecation")
public class MainActivity extends AppCompatActivity
{
private WebView WebView;
private ProgressBar ProgressBar;
private LinearLayout LinearLayout;
private String currentURL;
#SuppressLint("SetJavaScriptEnabled")
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
WebView = findViewById(R.id.webView);
ProgressBar = findViewById(R.id.progressBar);
LinearLayout = findViewById(R.id.layout);
ProgressBar.setMax(100);
WebView.loadUrl("https://www.brokenhearts.ml/index.html");
WebView.getSettings().setJavaScriptEnabled(true);
WebView.setWebViewClient(new WebViewClient()
{
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon)
{
LinearLayout.setVisibility(View.VISIBLE);
super.onPageStarted(view, url, favicon);
}
#Override
public void onPageFinished(WebView view, String url)
{
LinearLayout.setVisibility(View.GONE);
super.onPageFinished(view, url);
currentURL = url;
}
public void onReceivedError(WebView webview, int i, String s, String s1)
{
WebView.loadUrl("file:///android_asset/error.html");
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url2)
{
if (url2.contains("www.brokenhearts.ml"))
{
view.loadUrl(url2);
return false;
} else
{
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url2));
startActivity(intent);
return true;
}
}
});
WebView.setWebChromeClient(new WebChromeClient()
{
#Override
public void onProgressChanged(WebView view, int newProgress)
{
super.onProgressChanged(view, newProgress);
ProgressBar.setProgress(newProgress);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.menu, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item)
{
switch (item.getItemId())
{
case R.id.backward:
onBackPressed();
break;
case R.id.forward:
onForwardPressed();
break;
case R.id.refresh:
WebView.reload();
break;
case R.id.share:
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_TEXT,currentURL);
shareIntent.putExtra(Intent.EXTRA_SUBJECT,"Copied URL");
startActivity(Intent.createChooser(shareIntent,"Share URL"));
break;
case R.id.exit:
new AlertDialog.Builder(this,R.style.AlertDialog)
.setIcon(R.drawable.ic_error_black_24dp)
.setTitle("Are you sure you want to exit?")
.setMessage("Tapping 'Yes' will close the app. Tap 'No' to continue using the app")
.setPositiveButton("Yes",
new DialogInterface.OnClickListener()
{
#Override
public void onClick(DialogInterface dialog, int which)
{
finish();
}
})
.setNegativeButton("No", null)
.show();
break;
}
return super.onOptionsItemSelected(item);
}
private void onForwardPressed()
{
if (WebView.canGoForward())
{
WebView.goForward();
} else
{
Toast.makeText(this, "Can't go further", Toast.LENGTH_SHORT).show();
}
}
#Override
public void onBackPressed ()
{
if (WebView.canGoBack())
{
WebView.goBack();
} else
{
new AlertDialog.Builder(this,R.style.AlertDialog)
.setIcon(R.drawable.ic_error_black_24dp)
.setTitle("Are you sure you want to exit?")
.setMessage("Tapping 'Yes' will close the app. Tap 'No' to continue using the app")
.setPositiveButton("Yes",
new DialogInterface.OnClickListener()
{
#Override
public void onClick(DialogInterface dialog, int which)
{
finish();
}
})
.setNegativeButton("No", null)
.show();
}
}
}
Regarding hiding the share menu icon, you could always use onPrepareOptionsMenu() to hide your share menu if there is an error flag.
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
menu.findItem(R.id.share).setVisible(!isPageError);
return true;
}
which would require you to have a isPageError boolean set to true in your
#Override
public void onReceivedError(WebView webview, int i, String s, String s1{
isPageError = true;
}
I solved it using moving my error page to another activity. This is my new MainActiviy.java:
package com.ananya.brokenhearts;
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.webkit.WebChromeClient;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.Toast;
#SuppressWarnings("deprecation")
public class MainActivity extends AppCompatActivity
{
private WebView WebView;
private ProgressBar ProgressBar;
private LinearLayout LinearLayout;
private String currentURL;
#SuppressLint("SetJavaScriptEnabled")
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
WebView = findViewById(R.id.webView);
ProgressBar = findViewById(R.id.progressBar);
LinearLayout = findViewById(R.id.layout);
ProgressBar.setMax(100);
WebView.loadUrl("https://www.brokenhearts.ml/index.html");
WebView.getSettings().setJavaScriptEnabled(true);
WebView.getSettings().setUserAgentString("Broken Hearts/1.0");
WebView.setWebViewClient(new WebViewClient()
{
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon)
{
LinearLayout.setVisibility(View.VISIBLE);
super.onPageStarted(view, url, favicon);
}
#Override
public void onPageFinished(WebView view, String url)
{
LinearLayout.setVisibility(View.GONE);
super.onPageFinished(view, url);
currentURL = url;
}
#Override
public void onReceivedError(WebView webview, int i, String s, String s1)
{
WebView.loadUrl("file:///android_asset/error.html");
Intent intent = new Intent(MainActivity.this, ErrorActivity.class);
startActivity(intent);
finish();
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url2)
{
if (url2.contains("www.brokenhearts.ml"))
{
view.loadUrl(url2);
return false;
} else
{
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url2));
startActivity(intent);
return true;
}
}
});
WebView.setWebChromeClient(new WebChromeClient()
{
#Override
public void onProgressChanged(WebView view, int newProgress)
{
super.onProgressChanged(view, newProgress);
ProgressBar.setProgress(newProgress);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.menu, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item)
{
switch (item.getItemId())
{
case R.id.backward:
onBackPressed();
break;
case R.id.forward:
onForwardPressed();
break;
case R.id.refresh:
WebView.reload();
break;
case R.id.share:
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_TEXT,currentURL);
shareIntent.putExtra(Intent.EXTRA_SUBJECT,"Copied URL");
startActivity(Intent.createChooser(shareIntent,"Share URL"));
break;
case R.id.update:
Intent intent = new Intent(MainActivity.this, UpdateActivity.class);
startActivity(intent);
finish();
break;
case R.id.exit:
new AlertDialog.Builder(this,R.style.AlertDialog)
.setIcon(R.drawable.ic_error_black_24dp)
.setTitle("Are you sure you want to exit?")
.setMessage("Tapping 'Yes' will close the app. Tap 'No' to continue using the app")
.setPositiveButton("Yes",
new DialogInterface.OnClickListener()
{
#Override
public void onClick(DialogInterface dialog, int which)
{
finish();
}
})
.setNegativeButton("No", null)
.show();
break;
}
return super.onOptionsItemSelected(item);
}
private void onForwardPressed()
{
if (WebView.canGoForward())
{
WebView.goForward();
} else
{
Toast.makeText(this, "Can't go further", Toast.LENGTH_SHORT).show();
}
}
#Override
public void onBackPressed ()
{
if (WebView.canGoBack())
{
WebView.goBack();
} else
{
new AlertDialog.Builder(this,R.style.AlertDialog)
.setIcon(R.drawable.ic_error_black_24dp)
.setTitle("Are you sure you want to exit?")
.setMessage("Tapping 'Yes' will close the app. Tap 'No' to continue using the app")
.setPositiveButton("Yes",
new DialogInterface.OnClickListener()
{
#Override
public void onClick(DialogInterface dialog, int which)
{
finish();
}
})
.setNegativeButton("No", null)
.show();
}
}
}
and ErrorActivity.java:
package com.ananya.brokenhearts;
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.webkit.WebChromeClient;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
#SuppressWarnings("deprecation")
public class ErrorActivity extends AppCompatActivity
{
private ProgressBar ProgressBar;
private LinearLayout LinearLayout;
#SuppressLint("SetJavaScriptEnabled")
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_error);
android.webkit.WebView webView = findViewById(R.id.webView3);
ProgressBar = findViewById(R.id.progressBar3);
LinearLayout = findViewById(R.id.layout3);
ProgressBar.setMax(100);
webView.loadUrl("file:///android_asset/error.html");
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setUserAgentString("Broken Hearts/1.0");
webView.setWebViewClient(new WebViewClient()
{
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon)
{
LinearLayout.setVisibility(View.VISIBLE);
super.onPageStarted(view, url, favicon);
}
#Override
public void onPageFinished(WebView view, String url)
{
LinearLayout.setVisibility(View.GONE);
}
});
webView.setWebChromeClient(new WebChromeClient()
{
#Override
public void onProgressChanged(WebView view, int newProgress)
{
super.onProgressChanged(view, newProgress);
ProgressBar.setProgress(newProgress);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.menu3, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item)
{
switch (item.getItemId())
{
case R.id.refresh:
Intent intent = new Intent(ErrorActivity.this, MainActivity.class);
startActivity(intent);
finish();
break;
case R.id.update:
Intent intent2 = new Intent(ErrorActivity.this, UpdateActivity.class);
startActivity(intent2);
finish();
break;
case R.id.exit:
new AlertDialog.Builder(this,R.style.AlertDialog)
.setIcon(R.drawable.ic_error_black_24dp)
.setTitle("Are you sure you want to exit?")
.setMessage("Tapping 'Yes' will close the app. Tap 'No' to continue using the app")
.setPositiveButton("Yes",
new DialogInterface.OnClickListener()
{
#Override
public void onClick(DialogInterface dialog, int which)
{
finish();
}
})
.setNegativeButton("No", null)
.show();
break;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onBackPressed ()
{
new AlertDialog.Builder(this,R.style.AlertDialog)
.setIcon(R.drawable.ic_error_black_24dp)
.setTitle("Are you sure you want to exit?")
.setMessage("Tapping 'Yes' will close the app. Tap 'No' to continue using the app")
.setPositiveButton("Yes",
new DialogInterface.OnClickListener()
{
#Override
public void onClick(DialogInterface dialog, int which)
{
finish();
}
})
.setNegativeButton("No", null)
.show();
}
}
I have a Question I'm new in android app development.
Here is my MainActivity.java
package com.koridevbrowser.app;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
public class MainActivity extends AppCompatActivity implement ValueEventListener{
private TextView mText;
private WebView mWebView;
ProgressBar progressBar;
private Toolbar toolbar;
private DatabaseReference database = FirebaseDatabase.getInstance().getReference();
private DatabaseReference mconf = database.child("version");
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = (Toolbar) findViewById(R.id.app_bar);
setSupportActionBar(toolbar);
mText = (TextView) findViewById(R.id.About);
mWebView = (WebView) findViewById(R.id.activity_main_webview);
progressBar = (ProgressBar) findViewById(R.id.progressBar1);
String userAgent = mWebView.getSettings().getUserAgentString();
mWebView.getSettings().setUserAgentString(userAgent);
WebSettings webSettings = mWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
mWebView.loadUrl("http://www.kori-developer.com");
mWebView.setWebChromeClient(new WebChromeClient());
mWebView.setWebViewClient(new HelloWebViewClient());
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_main, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(final MenuItem item) {
switch (item.getItemId()) {
case R.id.home:
mWebView.loadUrl("http://kori-developer.com/");
return true;
case R.id.KoriFiles:
mWebView.loadUrl("http://kori-developer.com/forum/11-koridev-releases/");
return true;
case R.id.KoriRules:
mWebView.loadUrl("http://kori-developer.com/forum/26-foren-regeln/");
return true;
case R.id.KoriDonate:
mWebView.loadUrl("http://kori-developer.com/store/");
return true;
case R.id.KoriContact:
mWebView.loadUrl("http://kori-developer.com/contact/");
return true;
case R.id.KoriAbout:
Toast.makeText(MainActivity.this, "Version: 0.3b", Toast.LENGTH_LONG).show();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
if (dataSnapshot.getValue(String.class) !=null) {
String value = dataSnapshot.getKey();
if(value.equals("version")) {
String text = dataSnapshot.getValue(String.class);
mText.setText(text);
}
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
private class HelloWebViewClient extends WebViewClient{
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
// TODO Auto-generated method stub
super.onPageStarted(view, url, favicon);
}
#Override
public boolean shouldOverrideUrlLoading(WebView webView, String url)
{
webView.loadUrl(url);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
// TODO Auto-generated method stub
super.onPageFinished(view, url);
progressBar.setVisibility(view.GONE);
}
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) { //if back key is pressed
if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {
mWebView.goBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
public void onBackPressed() {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
MainActivity.this);
// set title
alertDialogBuilder.setTitle("Exit");
// set dialog message
alertDialogBuilder
.setMessage("Do you really want to exit KoriDev?")
.setCancelable(false)
.setPositiveButton("Yes",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
// if this button is clicked, close
// current activity
MainActivity.this.finish();
}
})
.setNegativeButton("No",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
// if this button is clicked, just close
// the dialog box and do nothing
dialog.cancel();
}
});
// create alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
// show it
alertDialog.show();
}
}
I will try to read the version from the realtime database here:
case R.id.KoriAbout:
Toast.makeText(MainActivity.this, "Version: 0.3b", Toast.LENGTH_LONG).show();
But I don't know how to setup this with the Realtime Database from Firebase.
A picture from my database :
its real time by default...I believe. if you change it in firebase, it'll change it on your app. but, for what you have, you have it hard coded into your toast.
You need to do something like this:
FirebaseDatabase database = FirebaseDatabase.getInstance();
DatabaseReference myRef = database.getReference("version");
// Read from the database
myRef.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
// This method is called once with the initial value and again
// whenever data at this location is updated.
String value = dataSnapshot.getValue(String.class);
Log.d(TAG, "Value is: " + value);
}
#Override
public void onCancelled(DatabaseError error) {
// Failed to read value
Log.w(TAG, "Failed to read value.", error.toException());
}
});
Checkout their doc here:
https://firebase.google.com/docs/database/android/start/
I buit an webview app with Android Studio and in my website i have a link like tel:0752118 when i press this link from app return eror net::err_unknown_url_scheme
This is my MainActivity.java
package totalonlinesrl.totalonline;
import android.content.Context;
import android.graphics.Bitmap;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.net.Uri;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private WebView webView;
private ProgressBar progressBar;
private LinearLayout layoutProgress;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webView = (WebView) findViewById(R.id.webView);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
layoutProgress = (LinearLayout) findViewById(R.id.layoutProgress);
webView.setVisibility(View.GONE);
WebSettings settings = webView.getSettings();
settings.setJavaScriptEnabled(true);
settings.setBuiltInZoomControls(true);
settings.setSupportZoom(true);
settings.setDisplayZoomControls(false);
webView.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
webView.setVisibility(View.VISIBLE);
layoutProgress.setVisibility(View.GONE);
progressBar.setIndeterminate(false);
super.onPageFinished(view, url);
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
layoutProgress.setVisibility(View.VISIBLE);
progressBar.setIndeterminate(true);
super.onPageStarted(view, url, favicon);
}
});
if(isOnline()) {
webView.loadUrl("https://total-online.eu/");
} else {
String summary = "<html><body><font color='red'>No Internet Connection</font></body></html>";
webView.loadData(summary, "text/html", null);
toast("No Internet Connection.");
}
}
private void toast(String message) {
Toast.makeText(this, message, Toast.LENGTH_LONG).show();
}
private boolean isOnline() {
ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
return (netInfo != null && netInfo.isConnected());
}
}
Any solution ?
If the links contain geographic locations, phone numbers, and email addresses, you can switch to the search screen and mail client using the code below.
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.startsWith("tel:")) {
Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(url));
startActivity(intent);
view.reload();
return true;
} else if (url.contains("mailto:")) {
view.getContext().startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
return true;
} else if(url.contains("geo:")) {
view.getContext().startActivity(new Intent(Intent.ACTION_VIEW,Uri.parse(url)));
return true;
} else {
view.loadUrl(url);
return true;
}
}