App opens anyways even though it was closed previously

App opens anyways even though it was closed previously - android

I am working on an app and while testing on my phone a noticed something weird: if I close the app while the splash screen is running, when the time of the before mention activity is over, the app opens again, even if I am in another app. Why does this happen?

package com.example.arlet.storemaps;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Window;
import java.util.Timer;
import java.util.TimerTask;
public class SplashScreenActivity extends AppCompatActivity {
//duration of splash screen in miliseconds
long delay = 6000;
private Timer timer;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_splash_screen);
Timer RunSplash = new Timer();
TimerTask ShowSplash = new TimerTask() {
#Override
public void run() {
//finishing splash screen
finish();
//starting main activity
Intent intent = new Intent(SplashScreenActivity.this, MainActivity.class);
startActivity(intent);
}
};
RunSplash.schedule(ShowSplash, delay);
}
#Override
protected void onDestroy(){
timer.cancel();
timer.purge();
super.onDestroy();
}
}
Here's the code updated #Badran

Override the onDestroy Method in SplashActivity:
#Override
protected void onDestroy() {
//remove the handler or thread or etc... that is opening the another activity
//call timer.cancel()
//call timer.purge ()
super.onDestroy();
}
So Your code will be now :
package com.example.arlet.storemaps;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Window;
import java.util.Timer;
import java.util.TimerTask;
public class SplashScreenActivity extends AppCompatActivity {
//duration of splash screen in miliseconds
long delay = 6000;
private Timer RunSplash;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_splash_screen);
RunSplash = new Timer();
TimerTask ShowSplash = new TimerTask() {
#Override
public void run() {
//finishing splash screen
finish();
//starting main activity
Intent intent = new Intent(SplashScreenActivity.this, MainActivity.class);
startActivity(intent);
}
};
RunSplash.schedule(ShowSplash, delay);
}
#Override
protected void onDestroy(){
if(RunSplash != null){
RunSplash.cancel();
RunSplash.purge();
}
super.onDestroy();
}
#Override
protected void onPause() {
if(RunSplash != null){
RunSplash.cancel();
RunSplash.purge();
}
super.onPause();
}
}

Related

Splash screen Android App has stopped

I want to make a splash screen for my android app. I have written following codes in welcomescreen.java in android studio. But after running the app, the app has stopped. :( What shall I Do now?
package com.mateors.welcomescreen;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class WelcomeScreen extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_welcome_screen);
Thread myThread = new Thread(){
#Override
public void run() {
try {
sleep(5000);
Intent intent = new Intent(getApplicationContext(), MainActivity.class);
startActivity(intent);
finish();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
};
myThread.start();
}
}

private static int SPLASH_TIME_OUT = 1500;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash_screen);
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
Intent i = new Intent(WelcomeScreen.this, MainActivity.class);
startActivity(i);
finish();
}
}, SPLASH_TIME_OUT);
}
try the above code snippet

Try with following code:
package com.mateors.welcomescreen;
import android.support.v7.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
public class WelcomeScreen extends AppCompatActivity {
private static int SPLASH_TIME_OUT = 5000;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_welcome_screen);
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
Intent i = new Intent(WelcomeScreen.this, MainActivity.class);
startActivity(i);
finish();
}
}, SPLASH_TIME_OUT);
}
}

Pause and Resume timer made using handlers

Here is my code for an activity. In this I am printing the time elapsed on a text view. I want to put onPause and onResume method in this. It should work such that the time is paused while app is in background . And when again brought to forefront, should timer start from where it paused. I tried it using this code but the time is not paused. It continues to run in background. Can anybody help to find workaround for this.
package com.example.test;
import android.support.v7.app.ActionBarActivity;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
public class MainActivity extends Activity {
TextView tt1;
private Handler customHandler = new Handler();
long timeInMilliseconds = 0L,timeToGo=0L,startTime=0L;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tt1=(TextView) findViewById(R.id.textView1);
startTime=System.currentTimeMillis();
customHandler.postDelayed(updateTimerThread, 0);
}
public Runnable updateTimerThread=new Runnable() {
#Override
public void run() {
// TODO Auto-generated method stub
long timeNow = System.currentTimeMillis();
timeToGo = 30 - (timeNow - startTime) / 1000;
tt1=(TextView) findViewById(R.id.textView1);
tt1.setText(timeToGo+"");
if(timeToGo<0L){
Intent intent=new Intent(MainActivity.this,Game.class);
finish();
startActivity(intent);
}
else
customHandler.postDelayed(this, 0);
}
};
#Override
public void onPause() {
super.onPause();
customHandler.removeCallbacksAndMessages(null);
}
#Override
public void onResume() {
super.onResume(); // Always call the superclass method first
customHandler.postDelayed(updateTimerThread, 0);
}
}

You need to update your startTime in onResume cause it hasn't changed...
#Override
public void onResume() {
startTime = System.currenTimeMillis() - timeToGo * 1000;
...
}
Or just use a Chronometer class http://developer.android.com/reference/android/widget/Chronometer.html

#Override
protected void onPause() {
customHandler.removeCallbacks(updateTimerThread);
super.onPause(); }

Delay after the splash screen

My problem is, if I set my splash as a Dialog by adding this line in the manifest there's a delay: android:theme="#android:style/Theme.Holo.Dialog.NoActionBar"
After the splash screen disappears it takes around 6 seconds or more to the main activity to appear.
How can I make this delay disappear?
Splash code:
public class SplashActivity extends Activity {
private final int DURATION = 3000;
private Thread mSplashThread;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
mSplashThread = new Thread() {
#Override
public void run() {
synchronized (this) {
try {
wait(DURATION);
} catch (InterruptedException e) {
} finally {
finish();
Intent intent = new Intent(getBaseContext(),
MainActivity.class);
startActivity(intent);
}
}
}
};
mSplashThread.start();
}
#Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
synchronized (mSplashThread) {
mSplashThread.notify();
}
}
return true;
}
}

Rather than using splash as dialogue you can do all your background work in a splash screen activity and then start your main activity..if you need dialogue animation then you can use animation like this.
overridePendingTransition( R.anim.come_up, R.anim.go_down );
By this you can manage your activity switching time.

i am not sure that this answer is appropriate but i have done it like this :
#Override
public void run()
{
// TODO Auto-generated method stub
startActivity( new Intent ( SplashActivity.this , MainActivity.class ) ) ;
}
#Override
protected void onStart()
{
super.onStart();
if(!isClosed)
splashHandler.postDelayed(this, "putYourTimeHere");
}

This is working for me at its best..
final int splashTimeOut = 3000;
Thread splashThread = new Thread(){
int wait = 0;
#Override
public void run() {
try {
super.run();
while(wait < splashTimeOut){
sleep(100);
wait += 100;
}
} catch (Exception e) {
}finally{
startActivity(new Intent(SplashScreen.this,LoginActivity.class));
finish();
}
}
};
splashThread.start();

this is the code for splashscreen display with some time delay
..
here set splash image in drawable in splash_screen.xml.
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.Window;
import android.widget.Toast;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
public class SplashScreen extends Activity {
LocationManager locationManager;
String provider, formattedDate, imeid;
double lat, lon;
#SuppressLint("NewApi")
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.splash_screen);
Calendar c = Calendar.getInstance();
SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");
formattedDate = df.format(c.getTime());
new Handler().postDelayed(new Runnable() {
public void run() {
Log.i("JO", "run");
Intent in = new Intent(SplashScreen.this,SecondActivity.class);
//in.putExtra("refreshclick", clickRefreshButton);
//in.putExtra("Current_Date", formattedDate);
// in.putExtra("ImeiId", imeid);
//Log.i("JO", "Current_Date"+formattedDate+";
ImeiId"+imeid+";lat"+lat+"lon"+lon);
startActivity(in);
finish();
}
}, 1000);
}
}

new Handler().postDelayed(new Runnable() {
#Override
public void run() {
Intent i = new Intent(SplashActivity.this, MainActivity.class);
startActivity(i);
finish();
}
}, DURATION);
}

Main Activity not opening

My app seems to start up properly, with the splash screen and stuff. But when it sleeps for 6 secs and when it supposed to get into the main activity the app crashes any help please?
Here is me code (android.intent.action1.MAINACTIVIVTY, the "action" was purposely changed to "action1")
package com.hellhogone.multitools;
import com.hellhogone.multitools.R;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Window;
import android.view.WindowManager;
public class Splash extends Activity{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.splash);
MediaPlayer yo = MediaPlayer.create(Splash.this, R.raw.smusic);
yo.start();
Thread timer = new Thread(){
public void run(){
try{
sleep(6000);
}catch(InterruptedException e){
e.printStackTrace();
}finally{
Intent h1 = new Intent("android.intent.action1.MAINACTIVITY");
startActivity(h1);
}
}
};
timer.start();
}
#Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
finish();
}
}

You cannot start an activity from another thread than the UI thread. To avoid this problem you can use runOnUiThread() :
}finally{
runOnUiThread(new Runnable() {
public void run() {
Intent h1 = new Intent("android.intent.action1.MAINACTIVITY");
startActivity(h1);
}
});
}

Second Activity doesn't load

I am new to Android development, I am trying to load second activity after some delay from first activity, but didn't get success yet.
Here is my code for splashactivity
package com.test.android.app;
import java.util.Timer;
import java.util.TimerTask;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.ViewGroup.LayoutParams;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.LinearLayout;
public class SplashActivity extends Activity{
LinearLayout linearLayout;
Timer timer;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
System.out.println("SplashActivity onCreate method called up");
linearLayout = new LinearLayout(this);
ImageView image = new ImageView(this);
image.setImageResource(R.drawable.rc_logo);
image.setAdjustViewBounds(true);
image.setLayoutParams(new Gallery.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
//linearLayout.setFrame(30,30,image.getWidth(),image.getHeight());
// Add the ImageView to the layout and set the layout as the content view
linearLayout.addView(image);
linearLayout.setGravity(Gravity.CENTER);
setContentView(linearLayout);
timer = new Timer();
timer.schedule(new LoadHomeScreenTask(this), 5*1000);
}
protected void onStart()
{
super.onStart();
Log.d("SplashActivity","onStart called up");
}
protected void onRestart()
{
super.onRestart();
Log.d("SplashActivity","onRestart called up");
}
protected void onResume()
{
super.onResume();
Log.d("SplashActivity","onResume called up");
}
protected void onPause()
{
super.onPause();
Log.d("SplashActivity","onPause called up");
}
protected void onStop()
{
super.onStop();
Log.d("SplashActivity","onStop called up");
}
protected void onDestroy()
{
super.onDestroy();
Log.d("SplashActivity","onDestroy method called up");
}
public void startHomeActivity()
{
Log.d("SplashActivity","startActivity called up");
//Intent intent = new Intent(SplashActivity.this,HomeScreenActivity.class);
//HomeScreenActivity homeScreenActivity = new HomeScreenActivity();
startActivity(new Intent(SplashActivity.this,HomeScreenActivity.class));
finish();
}
}
class LoadHomeScreenTask extends TimerTask {
SplashActivity splashActivity;
public LoadHomeScreenTask(SplashActivity splashActivity)
{
this.splashActivity = splashActivity;
}
public void run() {
Log.d("LoadHomeScreenTask"," run method called up");
this.splashActivity.startHomeActivity();
this.splashActivity.timer.cancel();
}
}
and below is my second activity
package com.test.android.app;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.ViewGroup.LayoutParams;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.LinearLayout;
public class HomeScreenActivity extends Activity {
LinearLayout linearLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d("HomeScreenActivity", "oncreate called up");
linearLayout = new LinearLayout(this);
linearLayout.setBackgroundColor(Color.GREEN);
ImageView image = new ImageView(this);
image.setImageResource(R.drawable.hanuman);
image.setAdjustViewBounds(true);
image.setLayoutParams(new Gallery.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
//linearLayout.setFrame(30,30,image.getWidth(),image.getHeight());
// Add the ImageView to the layout and set the layout as the content view
linearLayout.addView(image);
linearLayout.setGravity(Gravity.CENTER);
setContentView(linearLayout);
}
protected void onStart()
{
super.onStart();
Log.d("HomeScreenActivity","onStart method called up");
}
protected void onRestart()
{
super.onRestart();
Log.d("HomeScreenActivity","onRestart method called up");
}
protected void onResume()
{
super.onResume();
Log.d("HomeScreenActivity","onResume method called up");
}
protected void onPause()
{
super.onPause();
Log.d("HomeScreenActivity","onPause method called up");
}
protected void onStop()
{
super.onStop();
Log.d("HomeScreenActivity","onStop method called up");
}
protected void onDestroy()
{
super.onDestroy();
Log.d("HomeScreenActivity","onDestroy method called up");
}
}
and here is the logchat
05-31 11:14:01.509: DEBUG/SplashActivity(798): onStart called up
05-31 11:14:01.509: DEBUG/SplashActivity(798): onResume called up
05-31 11:14:01.740: INFO/ActivityManager(52): Displayed activity com.rajcomics.android.comicsapp/.SplashActivity: 1065 ms (total 1065 ms)
05-31 11:14:06.503: DEBUG/LoadHomeScreenTask(798): run method called up
05-31 11:14:06.503: DEBUG/SplashActivity(798): startActivity called up
05-31 11:14:06.509: INFO/ActivityManager(52): Starting activity: Intent { cmp=com.rajcomics.android.comicsapp/.HomeScreenActivity }
Please help me out to find the solution.

Try below
public class SplashActivity extends Activity {
protected int _splashTime = 3000;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
public void run() {
finish();
startActivity(new Intent(SplashActivity.this,HomeScreenActivity.class));
}
}, _splashTime);
}
}

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

App opens anyways even though it was closed previously - android

I am working on an app and while testing on my phone a noticed something weird: if I close the app while the splash screen is running, when the time of the before mention activity is over, the app opens again, even if I am in another app. Why does this happen?

Related

Splash screen Android App has stopped

Pause and Resume timer made using handlers

Delay after the splash screen

Main Activity not opening

Second Activity doesn't load

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