android,WindowManagerImpl.addView报错,Dialog.show()报错

if(!isFinishing()){mDialog.show();//显示}//............new Handler().postDelayed(new Runnable() {@Overridepublic void run() {// TODO 自动生成的方法存根mDialog.dismiss();//这里会跳转activity,切记在跳转之前要dismiss！！！！Intent intent = new Intent();intent.setClass(AddCityActivity.this,CityManageActivity.class);startActivity(intent);finish();}}, 2500);