Activity 技巧 屏幕 进度条 控制

锁定 Activity 运行时的屏幕方向

<activity android:name=".EX01"
 android:label="@string/app_name" 
 android:screenOrientation="portrait" // 竖屏 , 值为 landscape 时为横屏
…………
 </activity> 

全屏的 Activity

// 设置全屏模式
 getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
    WindowManager.LayoutParams.FLAG_FULLSCREEN); 
 // 去除标题栏
 requestWindowFeature(Window.FEATURE_NO_TITLE); 

在 Activity 的 Title 中加入进度条

// 不明确进度条
 requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS); 
 setContentView(R.layout.main); 
 setProgressBarIndeterminateVisibility(true); 

 // 明确进度条
 requestWindowFeature(Window.FEATURE_PROGRESS); 
 setContentView(R.layout.main); 
 setProgress(5000);