I have a tutorial in my app showing up when a user runs it for the first time
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
public void run() {
if (firstRun == true) {
Intent tut = new Intent(MainActivity.this, Tutorial.class);
startActivity(tut);
firstRun = false;
}
}
}, 200);
I have delayed it because without a delay i just get a black screen (the interface doesn't have the time to load)
But doing so i get the Tutorial.class opened many times, what am i doing wrong?
EDIT:
Here is some more code, i won't paste all of it since it would be only too long to read and it wouldn't be relevant to the problem
I save my preferences like this
#Override
protected void onStop(){
super.onStop();
// We need an Editor object to make preference changes.
// All objects are from android.context.Context
SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
SharedPreferences.Editor editor = settings.edit();
editor.putInt("Counter1", counter);
editor.putInt("Counter2", counter2);
editor.putBoolean("FirstRun", firstRun);
editor.putString("Label1", label1S);
editor.putString("Label2", label2S);
editor.commit();
}
protected void onPause(){
super.onPause();
SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
SharedPreferences.Editor editor = settings.edit();
editor.putInt("Counter1", counter);
editor.putInt("Counter2", counter2);
editor.commit();
}
Here is how i restore them inside the onCreate();
// Restore previous settings and data
SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
int counterRestored = settings.getInt("Counter1", 0);
int counter2Restored = settings.getInt("Counter2", 0);
boolean firstRunRestored = settings.getBoolean("FirstRun", true);
String label1Restored = settings.getString("Label1", "Counter 1");
String label2Restored = settings.getString("Label2", "Counter 2");
counter = counterRestored;
counter2 = counter2Restored;
firstRun = firstRunRestored;
label1S = label1Restored;
label2S = label2Restored;
renameLabel();
calculateTotal();
This is my second activity Tutorial.class
public class Tutorial extends MainActivity{
ImageButton btnSkip, btnSkip2, btnNext, btnNext2;
RelativeLayout tutorial, tutPage1, tutPage2;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tutorial);
btnSkip = (ImageButton) findViewById(R.id.btn_skip);
btnNext = (ImageButton) findViewById(R.id.btn_next);
btnSkip2 = (ImageButton) findViewById(R.id.btn_skip2);
btnNext2 = (ImageButton) findViewById(R.id.btn_next2);
tutorial = (RelativeLayout) findViewById(R.id.tutorial);
tutPage1 = (RelativeLayout) findViewById(R.id.page1);
tutPage2 = (RelativeLayout) findViewById(R.id.page2);
btnSkip.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
finish();
}
});
btnSkip2.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
finish();
}
});
btnNext.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
tutPage1.setVisibility(View.GONE);
tutPage2.setVisibility(View.VISIBLE);
}
});
btnNext2.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
tutPage1.setVisibility(View.VISIBLE);
tutPage2.setVisibility(View.GONE);
tutorial.setVisibility(View.VISIBLE);
finish();
}
});
}
}
why don't you try
if(firstRun){
firstRun = false;
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
public void run() {
Intent tut = new Intent(MainActivity.this, Tutorial.class);
startActivity(tut);
}
}
}, 200);
}
The value of firstRun will not be stored persistantly over several runs.
You should store this value in SharedPreferences so that it will retain its value even after the app has been closed. You can find a tutorial on how to use SharedPreferences here.
Related
I am making a game and want the load button to bring the player back into the game where it was saved using shared preferences. Is there perhaps something the load method is missing? The load method and button are in a different activity in the main menu but you can go back using the menu button
public static final String MY_PREFS = "prefs";
public static final String POSITION = "position";
public static final String INVENTORY = "inventory";
SharedPreferences sharedPrefs;
SaveButton = findViewById(R.id.SaveButton);
SaveButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
saveData();
}
});
MenuButton = findViewById(R.id.MenuButton);
MenuButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
finish();
}
});
} // public void setupControls()
public void saveData() {
sharedPrefs = getSharedPreferences(MY_PREFS, MODE_PRIVATE);
SharedPreferences.Editor edit = sharedPrefs.edit();
edit.putInt(POSITION, thePlayer.getPlayerPos());
edit.putString(INVENTORY, thePlayer.getInventory());
edit.commit();
Toast.makeText(this, "Data Saved", Toast.LENGTH_SHORT).show();
}
//The code below here is in a different activity
loadGame_button = findViewById(R.id.loadGame_button);
loadGame_button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
loadData();
}
});
public void loadData() {
SharedPreferences sharedPreferences = getSharedPreferences(MY_PREFS, MODE_PRIVATE);
inv = sharedPreferences.getString(INVENTORY, "");
pos = sharedPreferences.getInt(POSITION, 0);
}
Try this: split your game into various states in draw(): mainmenu, game pausemenu, gameoverscreen. Set your load button in any state which isn't game, and make it so besides loading your info, will also switch the state to game.
I am making a quiz app when I pressing the answer it was not showing the next question directly it was going to done activity where the score of the quiz will be displayed. Please tell me what to do and the changes i have to made for it. Please tell me in detail and which line the problem causes, because I am still learning, plz And also suggest me some improvements.
public class Playing extends AppCompatActivity implements View.OnClickListener {
final static long INTERVAL = 1000; // 1sec = 1000
final static long TIMEOUT = 7000; // 7000 = 7sec
int progressValue = 0;
CountDownTimer mCountDown;
int index = 0, score = 0, thisQuestion = 0, totalQuestion, correctAnswer;
ProgressBar progressBar;
ImageView question_image;
Button btnA, btnB, btnC, btnD;
TextView txtScore, txtQuestionNum, question_text;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_playing);
//View
txtScore = (TextView) findViewById(R.id.txtScore);
txtQuestionNum = (TextView) findViewById(R.id.txtTotalQuestion);
question_text = (TextView) findViewById(R.id.question_text);
question_image = (ImageView) findViewById(R.id.question_image);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
btnA = (Button) findViewById(R.id.btnAnswerA);
btnB = (Button) findViewById(R.id.btnAnswerB);
btnC = (Button) findViewById(R.id.btnAnswerC);
btnD = (Button) findViewById(R.id.btnAnswerD);
btnA.setOnClickListener(this);
btnB.setOnClickListener(this);
btnC.setOnClickListener(this);
btnD.setOnClickListener(this);
}
#Override
public void onClick(View view) {
mCountDown.cancel();
if (index < totalQuestion) //still have question in List
{
Button clickedButton = (Button) view;
if (clickedButton.getText().equals(Common.questionList.get(index).getCorrectAnswer())) {
//Choose correct answer
score += 10;
correctAnswer++;
showQuestion(++index); //next question
} else {
//Choose wrong answer
Intent intent = new Intent(this, Done.class);
Bundle dataSend = new Bundle();
dataSend.putInt("SCORE", score);
dataSend.putInt("TOTAL", totalQuestion);
dataSend.putInt("CORRECT", correctAnswer);
intent.putExtras(dataSend);
startActivity(intent);
finish();
}
}
}
private void showQuestion(int index) {
if (index < totalQuestion) {
thisQuestion++;
txtQuestionNum.setText(String.format(Locale.getDefault(), "%d / %d", thisQuestion, totalQuestion));
progressBar.setProgress(0);
progressValue = 0;
if (Common.questionList.get(index).getIsImageQuestion().equals("true")) {
//if is image
Picasso.get().load(Common.questionList.get(index).getQuestion()).into(question_image);
question_image.setVisibility(View.VISIBLE);
question_text.setVisibility(View.INVISIBLE);
} else {
question_text.setText(Common.questionList.get(index).getQuestion());
//If question is text,we will set image to invisible
question_image.setVisibility(View.INVISIBLE);
question_text.setVisibility(View.VISIBLE);
}
btnA.setText(Common.questionList.get(index).getAnswerA());
btnB.setText(Common.questionList.get(index).getAnswerB());
btnC.setText(Common.questionList.get(index).getAnswerC());
btnD.setText(Common.questionList.get(index).getAnswerD());
mCountDown.start(); //Start timer
} else {
//If it is final question
Intent intent = new Intent(this, Done.class);
Bundle dataSend = new Bundle();
dataSend.putInt("SCORE", score);
dataSend.putInt("TOTAL", totalQuestion);
dataSend.putInt("CORRECT", correctAnswer);
intent.putExtras(dataSend);
startActivity(intent);
finish();
}
}
#Override
protected void onResume() {
super.onResume();
totalQuestion = Common.questionList.size();
mCountDown = new CountDownTimer(TIMEOUT, INTERVAL) {
#Override
public void onTick(long minisec) {
progressBar.setProgress(progressValue);
progressValue++;
}
#Override
public void onFinish() {
mCountDown.cancel();
showQuestion(++index);
}
};
showQuestion(index);
}
}
There is no onClickListener within your Activity. I would recommend creating a "next()" function, and then, for each of the buttons, do something along the lines of:
btn.setOnClickListener(new View.OnClickListener(){
next()
})
I have a simple scenario but can't seem to wrap my head around it.
I want to save a incremented value as a int to SharedPreferences every time a user tap on a item, let me show what I have:
int counter = 0;
mBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
counter++;
SharedPreferences shareOpenClose = getSharedPreferences("Counter", Context.MODE_PRIVATE);
SharedPreferences.Editor editorOpenClose = shareOpenClose.edit();
editorOpenClose.putInt("count", counter);
editorOpenClose.apply();
SharedPreferences getCount = getSharedPreferences("Counter", Context.MODE_PRIVATE);
int getCountAmmount = getCount.getInt("count", 0);
if (getCountAmmount>3){
Toast.makeText(c, "success!", Toast.LENGTH_SHORT).show();
}
}
});
So, when I close the activity and open it again the counter will be reset to zero and the first save to SharedPreferences back to 0. If I keep the activity open and test this it work and I get the toast as expected.
Can someone please point out what I'm doing wrong?
Because you never set the counter back when the activity loads. try this:
int counter = 0;
onCreate(...){
SharedPreferences countPref = getSharedPreferences("Counter", Context.MODE_PRIVATE);
counter = countPref.getInt("count", 0);
}
mBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
counter++;
SharedPreferences countPref = getSharedPreferences("Counter", Context.MODE_PRIVATE);
SharedPreferences.Editor editorOpenClose = countPref.edit();
editorOpenClose.putInt("count", counter);
editorOpenClose.apply();
if (counter>3){
Toast.makeText(c, "success!", Toast.LENGTH_SHORT).show();
}
}
});
Make the following changes in your code
#Override
protected void onCreate(Bundle savedInstanceState) {
SharedPreferences shareOpenClose = getSharedPreferences("Counter", Context.MODE_PRIVATE);
final SharedPreferences.Editor editorOpenClose = shareOpenClose.edit();
final int[] counter = {0};
mBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
counter[0]++;
editorOpenClose.putInt("count", counter[0]);
editorOpenClose.apply();
SharedPreferences getCount = getSharedPreferences("Counter", Context.MODE_PRIVATE);
int getCountAmmount = getCount.getInt("count", 0);
if (getCountAmmount>3){
Toast.makeText(c, "success!", Toast.LENGTH_SHORT).show();
}
}
});
}
I hope this will help you, Happy Coding
I want to launch splash activity only once using SharedPreference, how it could be happen. any help will be highly appreciated. Thanks
Thread thread;
MediaPlayer audio;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
audio = MediaPlayer.create(MainActivity.this, R.raw.iphone);
audio.start();
if (first_run == true){
thread = new Thread(){
#Override
public void run() {
try {
sleep(4000);
Intent intent = new Intent(MainActivity.this, SplashTwo.class);
startActivity(intent);
} catch (InterruptedException e) {
e.printStackTrace();
}finally {
finish();
audio.release();
}
}
};
thread.start();
}
}
try this:
Declare
public static final String MyPREFERENCES = "MyPrefs";
public static final String ID = "idKey";
SharedPreferences sharedPreferences;
Now in your onCreate():
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sharedPreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
audio = MediaPlayer.create(MainActivity.this, R.raw.iphone);
audio.start();
String first = (sharedPreferences.getString("First", ""));
if (!first.equals("true")) {
thread = new Thread(){
#Override
public void run() {
try {
sleep(4000);
Intent intent = new Intent(MainActivity.this, SplashTwo.class);
startActivity(intent);
} catch (InterruptedException e) {
e.printStackTrace();
}finally {
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString("First", "true");
editor.commit();
finish();
audio.release();
}
}
};
thread.start();
}
}
Instead of sharedprefrence ,i would like to suggest you to use static boolean value like - isFirstTime and set it true by default and on second activity (next to splash) set it to false. Whenever you kill app static value will become dead.Check in onCreate of Splash -
if(!isFirstTime){
goToNextActivity();
}else{
//continue splash code
}
If you want to use shared preference then use same Logic ,take a boolean value and save it in shared pref -
SharedPreferences.Editor editor = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE).edit();
editor.putBoolean("isFirstTime", true);
editor.commit();
and in next activity simply set it to false or clear value. by calling editor.clear(); and put a check in splash if shared pref has some value or have isFirstTime and do next code accordingly.
In my application I have 2 buttons.
The first button in start game and the second button in continue game.
I want to disable my second button for the first time when my application runs.
It means just for the first time my second button is disabled to onClick. How to handle this?
How can I make it understand it is the first time?
public class Menu extends Activity implements View.OnClickListener {
SharedPreferences prefs;
Editor edit;
TextView best;
private boolean flag;
public static ImageView btn1, conti, but3, but4;
static Noti_Queue noti_queue;
static Splash splash;
public static AppList applist;
public static int userId;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.home_activity);
flag = PreferenceManager.getDefaultSharedPreferences(this).getBoolean("flag", false);
if (applist == null) {
applist = new AppList(this);
applist.set_identity("1");
}
if (splash == null) {
splash = new Splash(this);
splash.set_identity("1");
}
if (noti_queue == null) {
noti_queue = new Noti_Queue(this);
noti_queue.set_identity("1");
}
btn1 = (ImageView) findViewById(R.id.button1);
conti = (ImageView) findViewById(R.id.btn2);
but3 = (ImageView) findViewById(R.id.button3);
but4 = (ImageView) findViewById(R.id.button4);
btn1.setOnClickListener(this);
conti.setOnClickListener(this);
conti.setBackgroundResource(R.drawable.cont);
if (!flag) {
flag = true;
conti.setBackgroundResource(R.drawable.cont_press);}
conti.setEnabled(flag);
but3.setOnClickListener(this);
but4.setOnClickListener(this);
// giving question id
final int que_id = getIntent().getIntExtra("integer", 0);
Log.e("mhs", que_id + "");
//now lets save the que_id(now it is save to SharedPreferences
SharedPreferences myPrefs = getSharedPreferences("myPrefs", MODE_WORLD_READABLE);
userId = myPrefs.getInt("userId", 0);
//let get it to show
Log.e("saved", que_id + "");
setsize();
best = (TextView) findViewById(R.id.textView1);
Typeface tf = Typeface.createFromAsset(getAssets(), "fonts/myfont.ttf");
best.setTypeface(tf, Typeface.BOLD);
prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
edit = prefs.edit();
if (prefs.getInt("Best", 0) <= 0) {
edit.putInt("Best", 0);
edit.commit();
}
best.setText("بیشترین امتیاز : " + prefs.getInt("Best", 0));
}
#Override
public void onBackPressed() {
splash.Display();
splash = null;
super.onBackPressed();
}
#Override
protected void onResume() {
best.setText("بیشترین امتیاز : " + prefs.getInt("Best", 0));
super.onResume();
}
private void setsize() {
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int h = dm.heightPixels;
int w = dm.widthPixels;
h = h / 6;
w = w - ((w * 30) / 100);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(w, h);
but4.setLayoutParams(params);
but3.setLayoutParams(params);
btn1.setLayoutParams(params);
conti.setLayoutParams(params);
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button1:
if (!flag) {
flag = true;
PreferenceManager.getDefaultSharedPreferences(this).edit().putBoolean("flag", flag).commit();
conti.setEnabled(flag);
conti.setBackgroundResource(R.drawable.cont_press);
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
//finishing this activity is important to exit from app
Menu.this.finish();
}
break;
case R.id.btn2:
Toast.makeText(getApplicationContext(), userId + "", Toast.LENGTH_LONG).show();
Intent intent1 = new Intent(Menu.this, ContinueActivity.class);
intent1.putExtra("integer2", userId);
startActivity(intent1);
Menu.this.finish();
break;
case R.id.button3:
Toast.makeText(getApplicationContext(), "help", Toast.LENGTH_LONG).show();
break;
case R.id.button4:
applist.Display();
break;
}
}
With the help of sharedprefrence you can achieve this for example.
SharedPreferences sharedPreferences = getSharedPreferences("myPref", MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putBoolean("enableButton", true);
editor.commit();
put this code for enabling Button.
SharedPreferences sharedPreferences = getSharedPreferences("myPref", MODE_PRIVATE);
flag = sharedPreferences.getBoolean("enableButton", false);
if (flag) {
conti.setEnabled(true); ;
}