Question

我的SplashScreenActivity存在问题，当我在手机上启动应用程序时，它显示白屏大约0.5秒。 MainActitivy扩展FragmentActivity，AndroidManifest我将SplashScreenActivity声明为启动器，纵向模式为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

 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线程睡觉不是一个很好的主意使用处理程序而且我认为这也可能导致异常。

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);
    }

Answer 2

您需要在AsyncTask中运行这两个操作：

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

将setContentView放在doInBackground方法中，并在postExecute方法中运行randomSplash。

Answer 3

将AndroidManifest.xml文件中的SplashActivity主题更改为此。

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

在splashscreen之前的白色屏幕

3 个答案: