Android实现通知栏透明的方法

 /**
   * 设置通知栏 这个方法在onCreate()实现，如果是在父类的onCreate()中添加，即使所有继承了该父类都会有沉浸通知栏。
   */
public void initSystemBar() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
      setTranslucentStatus(true);
      SystemBarTintManager tintManager = new SystemBarTintManager(this);
      tintManager.setStatusBarTintEnabled(true);
      tintManager.setStatusBarTintResource(R.color.red);
    }
  }
  /**
   * 设置通知栏的状态
   * @param on
   */
  @SuppressLint("InlinedApi") 
  private void setTranslucentStatus(boolean on) { 
    Window win = this.getWindow(); 
    WindowManager.LayoutParams winParams = win.getAttributes(); 
    final int bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS; 
    if (on) { 
      winParams.flags |= bits; 
    } else { 
      winParams.flags &= ~bits; 
    } 
    win.setAttributes(winParams); 
  }

public class MainActivity extends Activity {
  @SuppressLint("InlinedApi")
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().requestFeature(Window.FEATURE_NO_TITLE);
    if(VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) {
      Window window = getWindow();
      window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS
          | WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
      window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
              | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
              | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
      window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
      window.setStatusBarColor(Color.TRANSPARENT);
      window.setNavigationBarColor(Color.TRANSPARENT);
    }
    setContentView(R.layout.activity_main);
  }
}