I am creating a splash screen using the following code ,when i press back key the application moves to the home screen and within a few seconds shows my next mainmenu screen.I am calling finish() in onBackPressed(),I want to close the app on pressing back key in the splash screen.can any one help me on this??
Thanks!!
Thread splashThread = new Thread() {
#Override
public void run() {
try {
int waited = 0;
while (_active && (waited < 2000)) {
sleep(100);
if(_active) {
waited += 100;
}
}
} catch (InterruptedException e) {
// do nothing
} finally {
finish();
startActivity(new Intent("next activity"));
stop();
}
}
};
splashThread.start();
It's because you call finish(); before the startActivity(new Intent("next activity"));
Swap finish(); with startActivity(new Intent("next activity"));
It is working in my application
public class Splash extends Activity {
protected boolean _active = true;
protected int _splashTime = 3000;
Thread splashTread;
private boolean stop = false;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
splashTread = new Thread() {
#Override
public void run() {
try {
int waited = 0;
while(_active && (waited < _splashTime)) {
sleep(100);
if(_active) {
waited += 100;
}
}
} catch(InterruptedException e) {
// do nothing
} finally {
if(!stop){
startActivity(new Intent(Splash.this,Home.class));
finish();
}
else
finish();
}
}
};
splashTread.start();
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK)) {
if(splashTread.isAlive())
this.stop = true;
}
return true;
}
}
this solution only solves the problem for the back-button. If users press the home-button the unwanted behavior will still occur. Wouldn't it be easier to overwrite the onStop method and do your thing in there?
#Override
public void onStop(){
super.onStop();
if(splashTread.isAlive())
this.stop = true;
}
Try using this:
SplashScreen.this.finish();
where SplashScreen is the name of the Activity.
public class SplashActivity extends Activity {
Handler handler;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash_screen);
handler=new Handler();
handler.postDelayed(() -> {
Intent intent=new Intent(SplashActivity.this, Home.class);
startActivity(intent);
finish();
},3000);
}
}
AndriodManifest.xml
<activity
android:name=".SplashActivity"
android:theme="#style/AppTheme"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
Related
I have a splash activity that is displayed for 2 seconds before opening the main activity.
If the user presses the back button while the splash activity is being displayed, the splash activity closes. But a short time later, the main activity [which was triggered by the splash activity] opens up.
I don't want this to happen. I want the entire application to close if the back button is pressed while the splash screen is being displayed.
How do I accomplish this?
Edit:
below is my code for splash activity:
public class Splash2 extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// fullscreen
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
// fading transition between activities
overridePendingTransition(R.anim.fadein, R.anim.fadeout);
setContentView(R.layout.activity_splash2);
Thread timer = new Thread() {
public void run() {
try {
sleep(1500);
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
Intent open = new Intent(
"com.example.puzzletimer.HOMESCREEN");
startActivity(open);
}
}
};
timer.start();
}
#Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
finish();
}
}
Just add this code to your SplashActivity...
#Override
public void onBackPressed() {
super.onBackPressed();
android.os.Process.killProcess(android.os.Process.myPid());
}
or maintain one flag to determine to start Activity or not in Thread...
public class Splash2 extends Activity {
private volatile boolean interrupt;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// fullscreen
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
// fading transition between activities
overridePendingTransition(R.anim.fadein, R.anim.fadeout);
setContentView(R.layout.activity_splash2);
Thread timer = new Thread() {
public void run() {
try {
sleep(1500);
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
if (!interrupt) {
Intent open = new Intent(
"com.example.puzzletimer.HOMESCREEN");
startActivity(open);
}
}
}
};
timer.start();
}
#Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
finish();
}
#Override
public void onBackPressed() {
super.onBackPressed();
interrupt = true;
}
}
Try this-
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
// do something on back.
this.finish();
return true;
}
return super.onKeyDown(keyCode, event);
}
Another way to do it is with runnable:
Declare Handler and Runnable in your Splash2 activity:
private Handler handler;
private Runnable startMain;
In onCreate(), initialize them and set the runnable to fire in 1.5 secs:
handler = new Handler();
startMain = new Runnable() {
#Override
public void run() {
Intent open = new Intent("com.example.puzzletimer.HOMESCREEN");
startActivity(open);
}
};
handler.postDelayed(startMain, 1500);
Override onBackPressed() and simply cancel runnable:
#Override
public void onBackPressed() {
handler.removeCallbacks(startMain);
super.onBackPressed();
}
That's it. If back key is pressed, it cancels runnable and your homescreen won't run.
I want to write a code that uses the splash screen .I have written this so far, but Can anyone tell me what is the missing here!?
here is my main code:
package com.example.splash;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
and here is my splash activity code:
package com.example.splash;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
public class splashscreen extends Activity {
protected int _splashTime = 5000;
private Thread splashTread;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.splashh);
final splashscreen sPlashScreen = this;
splashTread = new Thread() {
#Override
public void run() {
try {
synchronized(this){
wait(_splashTime);
}
} catch(InterruptedException e) {}
finally {
finish();
Intent i = new Intent();
i.setClass(sPlashScreen,MainActivity.class);
startActivity(i);
//stop();
}
}
};
splashTread.start();
}
The problem is I do not know how to tell my main to go splash activity , if I use an intent I would stuck on infinite loop.
You can simply use this:
Handler handler=new Handler();
handler.postDelayed(new Runnable()
{
#Override
public void run()
{
Intent intent = new Intent(SplashViewController.this,HomeViewController.class);
startActivity(intent);
SplashViewController.this.finish();
}
}, 3000);
try this instead :
public class splashscreen extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_splash);
Thread t = new Thread(Splash_Runnable);
t.start();
}
Runnable Splash_Runnable = new Runnable() {
#Override
public void run() {
try {
Thread.sleep(3000);
startActivity(new Intent(splashscreen.this,
MainActivity.class));
splashscreen.this.finish();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
}
The problem (i guess) is that your app is starting with your MainActivity as your launcher Activity. Make splashscreen your laucher Activity in your Application Manifest XML and you will avoid the infinite loop.
Try this code:
private boolean _active = true;
private int _splashTime = 5000;
Thread splashTread = new Thread()
{
#Override
public void run()
{
try
{
int waited = 0;
while(_active && (waited < _splashTime))
{
sleep(100);
if(_active)
{
waited += 100;
}
}
}
catch(InterruptedException e)
{
e.printStackTrace();
}
finally
{
Intent intent = new Intent(SplashScreenActivity.this,MainActivity.class);
startActivity(intent);
finish();
}
};
splashTread.start();
in AndroidManifest mention your activity as Main Activity.
Try to change your SplashActivity code from here.
Splash and main activity error
Also make your splashactivtiy as your launcher activity and then redirect to the MainActivity from the SplashScreen
<activity
android:name="com.app.wablogic.SplashActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
</intent-filter>
</activity>
Full detail of creating a splash Activity
Create a layout for Splash
splash.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#drawable/splash" >
</LinearLayout>
Now create a class Under package . Name it Splash
public class Splash extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
Intent openMainActivity = new Intent(Splash.this, MainActivity.class);
startActivity(openMainActivity);
finish();
}
}, 5000); //it will call the MainActivity after 5 seconds
}
Go to manifest and add the Activity to it.
and cut the intent-filter where main and Launcher are child and paste it in Splash Activity like
<activity
android:name="com.example.yourpackage.Splash"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
You can create a Thread for doing something or just sleep for a few seconds to do, such as
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Thread background = new Thread() {
public void run() {
try {
// Thread will sleep for 3 seconds
sleep(3*1000);
// After 3 seconds redirect to another intent
Intent i=new Intent(getBaseContext(),MenuActivity.class);
startActivity(i);
//Remove activity
finish();
} catch (Exception e) {
}
}
};
background.start();
}
#Override
protected void onDestroy() {
super.onDestroy();
}
You can get more example here.
I made a splash image to show at the start of my activity..
The image show perfectly.But the problem is when i call this
public class SplashImageActivity extends Activity {
protected boolean active = true;
protected int splashTime = 5000; // time to display the splash screen in ms
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
// thread for displaying the SplashScreen
Thread splashTread = new Thread() {
#Override
public void run() {
try {
int waited = 0;
while(active && (waited < splashTime)) {
sleep(100);
if(active) {
waited += 100;
}
}
} catch(InterruptedException e) {
// do nothing
} finally {
startActivity(new Intent(SplashImageActivity.this,Myapps.class));
finish();
//startActivity(new Intent("com.splash.com.MyApps"));
//startActivity( new Intent(getApplicationContext(), Myapps.class));
}
}
};
splashTread.start();
}
#Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
active = false;
}
return true;
}
}
go for next activity the stop() does not work. And it does not go to this activity. I add all activity in manifest. The stop() shows in code like this
what's the problem?
No need to call stop() and call finish() after starting activity
finally
{
startActivity(new Intent(currentclass.this,nextActivity.class);
finish();
}
I use thread to show the Splash screen, and it works for me:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
mSplashThread = new Thread(){
#Override
public void run(){
try {
synchronized(this){
wait(4000);
}
}catch(InterruptedException ex){
}
finish();
Intent i=new Intent(getApplicationContext(),NextActivity.class);
startActivity(i);
interrupt();
}
};
mSplashThread.start();
}
Please try below code..
public class Splashscreen extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Thread t2 = new Thread() {
public void run() {
try {
sleep(2000);
startActivity( new Intent(getApplicationContext(), Exercise.class));
finish();
} catch (Exception e) {
e.printStackTrace();
}
}
};
t2.start();
}
}
No need to call stop() just call finish() after starting activity
finally {
startActivity(new Intent(currentclass.this,nextActivity.class);
finish();
}
You can also use handler an postdelayed() to make a splash screen like below
public class SplashScreenActivity extends Activity{
private Handler handler;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash_screen);
final Runnable runnable = new Runnable() {
#Override
public void run() {
Intent intent=new Intent(SplashScreenActivity.this, nextActivity.class);
startActivity(intent);
finish();
}
};
handler = new Handler();
handler.postDelayed(runnable, 5000);
}
}
You will show your splash screen for 5 seconds and then move to next Activity
first thing it is not onStop of Activity so looks you are calling stop function of thread which is Deprecated that's why you are getting the strike line so use other way to stop the thread of use better way to implement the splash ........
as looks you try some thing like this link
My splash screen gets error and it is going to force close the app. in Logcat is says Permission Denied. What should i do to fix this problem. Can anyone help me with that matter, Thanks a lot
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.MotionEvent;
public class SplashScreen extends Activity {
protected boolean _active = true;
protected int _splashTime = 4000;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
// thread for displaying the SplashScreen
Thread splashTread = new Thread() {
#Override
public void run() {
try {
int waited = 0;
while(_active && (waited < _splashTime)) {
sleep(100);
if(_active) {
waited += 100;
}
}
} catch(InterruptedException e) {
// do nothing
} finally {
finish();
startActivity(new Intent("com.droidnova.android.splashscreen.BodyPartsGameActivity"));
stop();
}
}
};
splashTread.start();
}
#Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
_active = false;
}
return true;
}
}
do this it will easier to you:
private ImageView img;
private Thread t;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
img = (ImageView)findViewById(R.id.im1);
t = new Thread(){
#Override
public void run() {
try {
synchronized(this){
wait(2000);
}
// Here your code of animation
}
catch(InterruptedException ex){
ex.printStackTrace();
}
Intent i = new Intent(QuizActivity.this,main.class);
startActivity(i);
}
};
t.start();
}
Your Problem is that you don't add the QuizActivity to the AndroidMainfest.xml
<activity android:name="QuizActivity" ></activity>
than your problem should be solved.
and befor you start the new Activity in splash make
finish();
than you cant go back with back key to it =)
Can you try this once..
Thread splashTread = new Thread() {
#Override
public void run() {
try {
int waited = 0;
while(_active && (waited < _splashTime)) {
sleep(100);
if(_active) {
waited += 100;
}
}
} catch(InterruptedException e) {
// do nothing
} finally {
runOnUiThread(new Runnable() {
#Override
public void run() {
finish();
startActivity(new Intent("com.droidnova.android.splashscreen.BodyPartsGameActivity"));
stop();
}
});
}
}
};
In my application I have created a splash screen type of thing in Android. It should remain for 5 seconds.
My problem is how do I display another activity automatically after 5 secs?
The splash screen doesn't have a button, rather it should display another activity automatically after 5 seconds without the click of a button.
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
final Intent mainIntent = new Intent(LaunchActivity.this, HomeActivity.class);
LaunchActivity.this.startActivity(mainIntent);
LaunchActivity.this.finish();
}
}, 5000);
TimerTask task = new TimerTask() {
#Override
public void run() {
Intent intent = new Intent(SplashScreen.this, MainMenu.class);
startActivity(intent);
finishscreen();
}
};
Timer t = new Timer();
t.schedule(task, 5000);
and
private void finishscreen() {
this.finish();
}
You can use thread here
For example
// thread for displaying the SplashScreen
Thread splashTread = new Thread() {
#Override
public void run() {
try {
int waited = 0;
while(_active && (waited < _splashTime)) {
sleep(500);
if(_active) {
waited += 500;
}
}
} catch(InterruptedException e) {
// do nothing
} finally {
finish();
// start your activity here using startActivity
stop();
}
}
};
splashTread.start();
This can also be done using android CountDownTimer class.
See this example for 5seconds delay.
new CountDownTimer(5000, 1000) {
public void onFinish() {
Intent startActivity = new Intent(ThisActivity.this,ActivityToStart.class);
startActivity(startActivity);
finish();
}
public void onTick(long millisUntilFinished) {
}
}.start();
You may also need to define your parent activity in AndroidManifest.xml file,
<activity
android:name=".ActivityToStart"
android:label="Back"
android:parentActivityName=".MainActivity" >
<!-- Parent activity meta-data to support 4.0 and lower -->
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value=".MainActivity" />
</activity>