[英]Android splash screen ImageView not loading
My Android application is supposed to show a splash screen consisting solely of an ImageView while it is still loading. 我的Android应用程序应该在仍加载时显示一个仅由ImageView组成的启动屏幕。 The ImageView should just display a local resource.
ImageView应该只显示本地资源。 Here is my code:
这是我的代码:
public class GameActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ImageView splash = new ImageView(this);
splash.setImageResource(R.drawable.splashImage);
RelativeLayout layout = new RelativeLayout(this);
layout.setId(R.id.gameView);
uilayout addView(splash, someLayoutParams);
setContentView(layout, someOtherLayoutParams);
// with a return-statement, the image would be displayed now
final GameActivity activity = this;
this.findViewById(R.id.gameView).getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
// this is supposed to wait until the image has been fully loaded
activity.init(this);
}
});
}
public void init(ViewTreeObserver.OnGlobalLayoutListener listener) {
try {
findViewById(R.id.gameView).getViewTreeObserver().removeOnGlobalLayoutListener(listener);
} catch (NoSuchMethodError x) {
findViewById(R.id.gameView).getViewTreeObserver().removeGlobalOnLayoutListener(listener);
} finally {
LinearLayout layout = new LinearLayout(this);
// lots of stuff
setContentView(layout);
}
}
}
My problem is that as soon as I execute code after the first call for setContentView(), my splash screen image is not displayed and the new layout immediately shows up. 我的问题是,在第一次调用setContentView()之后执行代码后,我的启动屏幕图像不会显示 ,并且新布局立即显示出来。 I would appreciate any help on how to solve this problem.
我将不胜感激如何解决此问题。
EDIT: It was my fault to assume that my code was the ideal solution for a splash screen. 编辑:认为我的代码是启动屏幕的理想解决方案是我的错。 This tutorial really helped me out.
本教程确实帮助了我。 My solution based on this tutorial:
我的解决方案基于本教程:
@drawable/layer-list_splash : @ drawable / layer-list_splash :
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:drawable="@color/color_background"/>
<item>
<bitmap
android:gravity="center"
android:src="@drawable/sprite_splash"/>
</item>
</layer-list>
and my styles.xml : 和我的styles.xml :
<resources>
<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
<item name="android:windowBackground">@drawable/layers_splash</item>
</style>
</resources>
You can Do Something Like This 你可以做这样的事情
splash.xml splash.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/TheSplashLayout"
android:layout_gravity="center"
>
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/SplashImageView"
android:layout_gravity="center"
android:src="@drawable/your_splash_image"
/>
</LinearLayout>
SplashScreen.java SplashScreen.java
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.MotionEvent;
import com.example.harsh.gmfbp.R;
public class SplashScreen extends Activity {
/**
* The thread to process splash screen events
*/
private Thread mSplashThread;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Splash screen view
setContentView(R.layout.splash);
final SplashScreen sPlashScreen = this;
// The thread to wait for splash screen events
mSplashThread = new Thread(){
@Override
public void run(){
try {
synchronized(this){
// Wait given period of time or exit on touch
wait(5000);
}
}
catch(InterruptedException ex){
}
finish();
// Run next activity which is your GameActivity
Intent intent = new Intent();
intent.setClass(sPlashScreen, MainActivity.class); //Here You Can Replace MainActivity.class with your GameActivity
startActivity(intent);
}
};
mSplashThread.start();
}
/**
* Processes splash screen touch events
*/
@Override
public boolean onTouchEvent(MotionEvent evt)
{
if(evt.getAction() == MotionEvent.ACTION_DOWN)
{
synchronized(mSplashThread){
mSplashThread.notifyAll();
}
}
return true;
}
}
How about running the activity.init() after 2 secs to show the splash screen? 2秒后运行activity.init()以显示初始屏幕如何?
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
activity.init();
}
}, 2000)
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