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