初始屏幕没有显示

Question

我有两个类Splash.java和Activity2.java !!我曾尝试过简单的泼溅代码：

public class Splash extends Activity 
    { 
    @Override 
    public void onCreate(Bundle savedInstanceState) 
    { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.splash); 
     Thread thread= new Thread() 
    { 
    @Override 
    public void run() 
    { 

    super.run(); 
    startActivity(new Intent(Splash.this,Trial.class)); 
    finish(); 

    } 
    }; 
    thread.start(); 

} 
} 

在我的清单中，我也给出了条目。我的代码没有错误地运行。 R.layout.splash的代码如下：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
android:gravity="center_horizontal" 
    > 
<ImageView 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:src="@drawable/d" 
android:layout_gravity="center"/> 

</LinearLayout> 

谢谢!!

Answer 1

尝试这种方式

setContentView(R.layout.splashscreen); 

    new Thread(new Runnable() { 

     @Override 
     public void run() { 
      try { 
       Thread.sleep(2000); 
       startActivity(new Intent(SplashScreen.this, Trial.class)); 
       finish(); 
      } catch (InterruptedException e) { 
       e.printStackTrace(); 
      }    
     } 
    }).start(); 

xml文件

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="wrap_content" android:layout_height="wrap_content" 
    android:background="@drawable/screen1"> 
</LinearLayout> 

Answer 2

public class Splash extends Activity { 
    RelativeLayout container; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     setContentView(R.layout.splashscreen); 
     container = (RelativeLayout) findViewById(R.id.container); 



     Thread thread = new Thread(){ 
      @Override 
      public void run() { 

       try { 
        sleep(3000);//sleeps for 3 second 


        Intent intent = new Intent(Splash.this,Activity2.class); 
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
        startActivity(intent); 
        finish(); 
       } catch (InterruptedException e) { 
       // e.printStackTrace(); 
        Toast.makeText(getApplicationContext(),e.getMessage(),Toast.LENGTH_SHORT).show(); 
       } 


       super.run(); 
      } 
     }; 
     thread.start(); 
    } 



    @Override 
    public void onConfigurationChanged(Configuration newConfig) { 
     super.onConfigurationChanged(newConfig); 

     // Checks the orientation of the screen 
     if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) { 
      //Toast.makeText(this, "landscape", Toast.LENGTH_SHORT).show(); 
      setSize(); 
     } else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){ 
      //Toast.makeText(this, "portrait", Toast.LENGTH_SHORT).show(); 
      setSize(); 
     } 
    } 

    private void setSize(){ 
     if(container!=null) { 
      if (container.getChildCount() > 0) { 
       container.getChildAt(0).setMinimumHeight(getWindowManager().getDefaultDisplay().getHeight() * 4/10); 
      } 
     } 
    } 


} 

** your splash screeen layout ** 

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:background="@drawable/shaded_rectangle" 
    android:id="@+id/container"> 

    <ImageView 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent" 
     android:background="@drawable/splas"/> 
</RelativeLayout> 


**manifest** 



     <activity 
      android:name=".collegeconnect.activity.Splash" 
      android:label="@string/app_name" 
      android:screenOrientation="portrait" 
      android:theme="@android:style/Theme.NoTitleBar.Fullscreen" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 

Answer 3

public class MainActivity extends AppCompatActivity { 

private static int SPLASH_TIME_OUT = 4000; 

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

    new Handler().postDelayed 

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

}