Android顶部状态栏透明化并释放空间的两种实现方法

if (Build.VERSION.SDK_INT >= 19){ 
  WindowManager.LayoutParams localLayoutParams = mActivity.getWindow().getAttributes(); 
  localLayoutParams.flags = (WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS | localLayoutParams.flags); 
  if (fmMain != null) { //fmMain：自定义的顶部导航条 
   LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) fmMain.getLayoutParams(); 
   layoutParams.setMargins(0, ChuangChuangApp.STATUSBARHEIGHT, 0, 0);//STATUSBARHEIGHT状态栏高度 
  fmMain.setLayoutParams(layoutParams); //设置顶部margin值 
  } 
  
 } 

if (Build.VERSION.SDK_INT >= 21) { 
  View decorView = getWindow().getDecorView(); 
  fmMain.setBackgroundColor(Color.TRANSPARENT); 
  int option = View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN 
   | View.SYSTEM_UI_FLAG_LAYOUT_STABLE; 
  decorView.setSystemUiVisibility(option); 
  getWindow().setStatusBarColor(Color.TRANSPARENT); 
}