android 顶部状态栏遮盖

mParams.type = WindowManager.LayoutParams.TYPE_SYSTEM_ERROR;
mParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS
| WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR
| WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
| WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL;

/**
* @author ${孟天宇} @https://github.com/mengtianyu
* @date 2015-12-10
*/
public class ContactsBar extends Service {

private WindowManager wManager;// 窗口管理者
private WindowManager.LayoutParams mParams;// 窗口的属性
private boolean flag = true;
private View view;

@Override
public IBinder onBind(Intent intent) {
return null;
}

@Override
public void onCreate() {
wManager = (WindowManager) getApplicationContext().getSystemService(
Context.WINDOW_SERVICE);

mParams = new WindowManager.LayoutParams();
mParams.type = WindowManager.LayoutParams.TYPE_SYSTEM_ERROR;
mParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS
| WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR
| WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
| WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL;

mParams.gravity = Gravity.LEFT | Gravity.TOP;
mParams.x = 0;
mParams.y = 0;

mParams.width = WindowManager.LayoutParams.MATCH_PARENT;
mParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
mParams.format = PixelFormat.RGBA_8888;

view = LayoutInflater.from(ContactsBar.this).inflate(R.layout.contacts_bar, null);
wManager.addView(view, mParams);//添加窗口
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent();
intent.setClass(ContactsBar.this, TestActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
ContactsBar.this.stopSelf();

}
});
super.onCreate();
}

@Override
public void onDestroy() {
wManager.removeView(view);//移除窗口
super.onDestroy();
}

}