屏幕前的白色屏幕

Question

我的SplashScreenActivity有问题，当我在手机上启动应用程序时，它会显示约0.5秒的白色屏幕。MainActivity扩展了FragmentActivity，在AndroidManifest中，我声明SplashScreenActivity为启动器，肖像模式为screenOrientation。

代码：

public class SplashScreenActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.splashscreen);
    randomSplash();

    Thread splashscreen = new Thread() {

        public void run() {
            try {
                Thread.sleep(1000);
                Intent mainScreen = new Intent("com.rm.jkrm.MAINACTIVITY");
                startActivity(mainScreen);
            } catch (InterruptedException e) {

            } finally {
                finish();
            }
        }
    };
    splashscreen.start();
}

private void randomSplash(){
    Random random = new Random();
    int i = random.nextInt(4);

    LinearLayout ln = (LinearLayout) findViewById(R.id.splashscreen);

    switch(i){
    case 1: 
        ln.setBackgroundResource(R.drawable.splash1);
        break;
    case 2: 
        ln.setBackgroundResource(R.drawable.splash2);
        break;
    case 3: 
        ln.setBackgroundResource(R.drawable.splash3);
        break;
    default: 
        ln.setBackgroundResource(R.drawable.splash0);
        break;
    }
}
}

XML：

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:id="@+id/splashscreen"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical">
</LinearLayout>

Answer 1

更改AndroidManifest中的活动主题。将xml文件复制到该文件。

android:theme="@android:style/Theme.Translucent.NoTitleBar"

Answer 2

您需要在异步任务中运行这两个操作：

setContentView(R.layout.splashscreen);
randomSplash();

将setContentView放入运行的doInBackground方法和postExecute方法randomSplash。

Answer 3

 Thread splashscreen = new Thread() {

        public void run() {
            try {
                Thread.sleep(1000);
                Intent mainScreen = new Intent("com.rm.jkrm.MAINACTIVITY");
                startActivity(mainScreen);
            } catch (InterruptedException e) {

            } finally {
                finish();
            }
        }
    };
    splashscreen.start();

这是你的问题UI线程睡眠不是一个很好的主意使用处理程序，我认为它可能会导致一个异常。

Handler h=new Handler();
        h.postDelayed(new Runnable() {

            public void run() {
                // TODO Auto-generated method stub
                startActivity(new Intent(Splash_Activity.this,Main_Activity.class));
                finish();
            }
        }, 2000);
    }