How to show the SplashScreen while the MainActivity is running

Question

I'm writing a small Android Game and I want to show a Splash screen before each Level and after a Game Over. Most tutorials I found only show Splash Screen implementations that run before the MainActivity is run.

In my case I would need to "run" the Splash Screen while the MainActivity is running. How can I achieve this?

I've already created a SplashActivity class that extends AppCompatActivity according to a Tutorial, but I don't think it is right for my Problem.

public class SplashActivity extends AppCompatActivity
{
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                // This method will be executed once the timer is over
                Intent i = new Intent(SplashActivity.this, MainActivity.class);
                startActivity(i);
                finish();
            }
        }, 5000);
    }
}

The activity has the following xml:

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.androidcodefinder.splashscreendemo.MainActivity"
    android:background="@color/backgroundColor">

<ImageView
        android:id="@+id/logo"
        android:src="@mipmap/splash"
        android:layout_width="120dp"
        android:layout_height="2dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"/>

</android.support.constraint.ConstraintLayout>

In the MainActivity class I start a GamePanel extends SurfaceView that then starts a GameLoop.

@Override
public void run () {
    Canvas canvas;

    while (!this.exit) {
        canvas = null;

        try {
            canvas = this.surfaceHolder.lockCanvas();

            playAnimation(R.drawable.splash_gameover, R.anim.viewanimation);

            synchronized (this.surfaceHolder) {
                this.gamePanel.update();
                this.gamePanel.render(canvas, lag);
            }
        } finally {
            if (canvas != null) {
                this.surfaceHolder.unlockCanvasAndPost(canvas);
            }
        }
    }
}

Answer 1

In my android game Anagram it is working fine, I used below code , U can check it out-

I created a xml like :

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:background="#fff"
tools:context=".SplashScreen">

<ImageView
    android:id="@+id/imgLogo"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:scaleType="fitXY"
    android:background="@drawable/splash" />

</LinearLayout>

Where @drawable/splash would be your desired background which U want to show

And below is SplashScreen code

public class SplashScreen extends Activity {

private static int SPLASH_TIME_OUT = 3000;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_splash_screen);

    new Handler().postDelayed(new Runnable() {

        @Override
        public void run() {
            Intent intent = new Intent(SplashScreen.this,MainActivity.class);
            startActivity(intent);
            finish();
        }
    }, SPLASH_TIME_OUT);

    }

}

Answer 2

You can call

Intent i = new Intent(MainActivity.this, SplashActivity.class);
startActivity(i);

at anywhere you want in MainActivity to bring up the SplashActivity. However, you probably don't want the SplashActivity to create another new MainActivtiy. You can pass some message through Intent to tell the SplashActivtiy what to do.

In MainActivity

Intent i = new Intent(MainActivity.this, SplashActivity.class);
i.putExtra("START_NEW_MAIN",false)
startActivity(i);

In SplashActivity

public class SplashActivity extends AppCompatActivity
{
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        final boolean startNewMain = getIntent().getBooleanExtra("START_NEW_MAIN",true)
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                // This method will be executed once the timer is over
                if(startNewMain)
                {
                    Intent i = new Intent(SplashActivity.this, MainActivity.class);
                    startActivity(i);
                }
                finish();

            }
        }, 5000);
    }
}

You can even completely remove the part that start MainActivity in SplashActivity if SplashActivity is not your app's entry point. Simply:

In MainActivity

Intent i = new Intent(MainActivity.this, SplashActivity.class);
startActivity(i);

In SplashActivity

public class SplashActivity extends AppCompatActivity
{
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                finish();
            }
        }, 5000);
    }
}