compile 'com.readystatesoftware.systembartint:systembartint:1.0.3' 

public class BaseActivity extends Activity{ 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { 
      setTranslucentStatus(true); 
      SystemBarTintManager tintManager = new SystemBarTintManager(this); 
      tintManager.setStatusBarTintEnabled(true); 
      tintManager.setStatusBarTintResource(R.color.my_red);//通知栏所需颜色 
    } 
    super.onCreate(savedInstanceState); 
    this.activity = this; 
  } 
   @TargetApi(19) 
  private void setTranslucentStatus(boolean on) { 
    Window win = 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); 
  } 
}