Toast单例

Toast toast=Toast.makeText(cordova.getActivity(),"请在系统设置开启相机权限",Toast.LENGTH_LONG);

showtoast(toast,4000);

//设置吐司时长

public voidshowtoast(finalToast toast,finalint cnt){

final Timertimer=new Timer();

timer.schedule(newTimerTask() {

@Override

public voidrun() {

toast.show();

}

},0,cnt);

new Timer().schedule(newTimerTask() {

@Override

public voidrun() {

toast.cancel();

timer.cancel();

}

},cnt);

}