Black screen appearing after splash screen in android

Question

I am developing an app in which i had used splash screen. But after splash disappears, then
Next screen becomes black before switching to my main activity and I don't want black screen. Can anyone please suggest me how to do this? Here's my code.

Launcher Activity

public class MainActivity extends Activity{
public static final String TAG = "MainActivity";
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
Intent in = new Intent(getApplicationContext(), SplashScreenActivity.class);
synchronized (this) {
try {
wait(50);
} catch (InterruptedException e) {
String str = e.toString();
Log.d(TAG, str);
}//catch
}//synchronized block
startActivity(in);
}//onCreate
}//class

SplashScreenAcitvity

public class SplashScreenActivity extends Activity {
private Thread splashThread;
public static final String TAG = "SplashScreenActivity";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
final SplashScreenActivity splashScreen = this;

splashThread = new Thread(){
public void run(){
try {
synchronized (this) {
wait(3000);
}
} catch (Exception e) {
String str = e.toString();
Log.d(TAG, str);
}
finish();
Intent in = new Intent();
in.setClass(splashScreen, ProjectActivity.class);
startActivity(in);
stop();
}//run
};
splashThread.start();
}//onCreate

}//class

Project Activity This is the class from where main operation will start.

public class ProjectActivity extends TabActivity {
static int x=0;
static int color;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.tabxml);

if(x==1)
{
Dor.c=1;
color = getIntent().getExtras().getInt("color");
//Intent in=new Intent();
//in.putExtra("color",color);
}
Resources res = getResources(); // Resource object to get Drawables
TabHost tabHost = getTabHost();  // The activity TabHost
TabHost.TabSpec spec;  // Resusable TabSpec for each tab
Intent intent;  // Reusable Intent for each tab
// Create an Intent to launch an Activity for the tab (to be reused)
intent = new Intent().setClass(this, Dor.class);
// Initialize a TabSpec for each tab and add it to the TabHost
spec = tabHost.newTabSpec("dor").setIndicator("Dor",
res.getDrawable(R.drawable.ic_tab_artists))
.setContent(intent);
tabHost.addTab(spec);

// Do the same for the other tabs
intent = new Intent().setClass(this, Album.class);
spec = tabHost.newTabSpec("albums").setIndicator("Albums",
res.getDrawable(R.drawable.ic_tab_album)
.setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, Forhandler.class);
spec = tabHost.newTabSpec("forhandler").setIndicator("Forhandler",
res.getDrawable(R.drawable.ic_tab_forhandler))
.setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, Diplomat.class);
spec = tabHost.newTabSpec("diplomat").setIndicator("Diplomat",
res.getDrawable(R.drawable.ic_tab_diplomat))
.setContent(intent);
tabHost.addTab(spec);
tabHost.setCurrentTab(0);
}
}

I tried with async task but it didn't worked. Here's my modified code:

ProjectStart

public class ProjectStart extends AsyncTask<Context, Void, Void>{
public static final String TAG = "ProjectStart";
/*public ProjectStart() {
    super("ProjectStart");
    // TODO Auto-generated constructor stub
}*/

Context ctx;
public ProjectStart(Context context){
    this.ctx = context;
}//constructor

@Override
protected Void doInBackground(Context... params) {
    // TODO Auto-generated method stub
    Intent in = new Intent();
    in.setClass(ctx, ProjectActivity.class);
    Log.d(TAG, "doInBackground called");
    return null;
}//doInBackground

/*@Override
protected void onHandleIntent(Intent intent) {
    // TODO Auto-generated method stub
    Intent in = new Intent();
    in.setClass(getApplicationContext(), ProjectActivity.class);
    startActivity(in);
    Log.d("Project Start", "onHandleIntentCalled");
}*/

}//class

In SplashScreen.java I did following modifications

splashThread = new Thread() {
        public void run(){
            try {                   
                synchronized (this) {
                    wait(3000);
                }//synchronized
            }//try  
            catch(InterruptedException e) {} 
            finally {
                finish();
                new ProjectStart(sPlashScreen).execute();
                /*Intent in = new Intent(getApplicationContext(), ProjectStart.class);
                startService(in);*/
                stop();
            }//finally
            Log.d(TAG, "run method called");
        }//run
    };

And, here is stack trace:

  04-19 11:29:02.181: E/AndroidRuntime(341): FATAL EXCEPTION: Thread-8
04-19 11:29:02.181: E/AndroidRuntime(341): java.lang.ExceptionInInitializerError
04-19 11:29:02.181: E/AndroidRuntime(341):  at abc.com.camera.SplashScreen$1.run(SplashScreen.java:32)
04-19 11:29:02.181: E/AndroidRuntime(341): Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
04-19 11:29:02.181: E/AndroidRuntime(341):  at android.os.Handler.<init>(Handler.java:121)
04-19 11:29:02.181: E/AndroidRuntime(341):  at android.os.AsyncTask$InternalHandler.<init>(AsyncTask.java:421)
04-19 11:29:02.181: E/AndroidRuntime(341):  at android.os.AsyncTask$InternalHandler.<init>(AsyncTask.java:421)
04-19 11:29:02.181: E/AndroidRuntime(341):  at android.os.AsyncTask.<clinit>(AsyncTask.java:152)
04-19 11:29:02.181: E/AndroidRuntime(341):  ... 1 more


    04-19 11:29:02.181: E/AndroidRuntime(341): Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()

I am not getting what is the problem.

Answer 1

But after splash disappears, the screen becomes black before switching to my main activity

It seems that you might be doing some Background process on the UI of MainActivity that is taking time to do the Background Process. If so the use

• AsyncTask
• Service
• IntentService

for Background Process. If not the show the Main Activity what code does it have.

Answer 2

Add a flag to your activity intent.. setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION)

Answer 3

I think the Best solution for you is asynctask

Given is an example from Developer's site. Asynctask has main four Methods.

onPreExecute()

doInBackground(Params...)

onProgressUpdate(Progress...)

onPostExecute(Result)

And this is other Example.

Answer 4

You can find the tutorial for more help below links:

http://p-xr.com/android-tutorial-how-to-make-a-basic-splash-screen/

http://www.codeproject.com/Articles/113831/An-Advanced-Splash-Screen-for-Android-App

Thanks..!