问题描述
我正在开发游戏。 在我的游戏中，我有一个对话框来关闭并继续游戏。我想要的事情是当我按下对话框的“否”按钮，然后从3开始计数到0，然后继续游戏。 请告诉我如何在游戏屏幕中央以透明的textview实现倒数计时器，并且3秒钟后计时器也不可见。 请通过编辑代码解决我的问题。 这是我的AlertDialog代码
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
GamePanel.thread.setRunning(false);
// in the next line of code we also style the dialog through xml which i put in styles
AlertDialog alertDialog = new AlertDialog.Builder(this,R.style.myBackgroundStyle).create();
alertDialog.setTitle("Exit Alert");
alertDialog.setMessage("Do you really want to exit the Game?");
alertDialog.setButton("Yes", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int which) {
//Best way is firstly use finish() and after that use System.exit(0) to clear static variables. It will give you some free space.
// A lot of applications leave working processes and variables what makes me angry. After 30 minutes of using memory is full and i have to run Task Manager - Lvl 2 clear memory
finish();
System.exit(0);
return;
} });
alertDialog.setButton2("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
GamePanel.thread.setRunning(true);
return;
}});
alertDialog.show();
return true;
}
return super.onKeyDown(keyCode, event);}
任何帮助，将不胜感激。 谢谢！
1楼
final TextView tv = new TextView(this);
final PopupWindow popupWindow = new PopupWindow(tv, ViewGroup.LayoutParams.WRAP_CONTENT,ViewGroup.LayoutParams.WRAP_CONTENT,true);
popupWindow.showAtLocation(getCurrentFocus(), Gravity.CENTER,0,0);
new AsyncTask<Void,Integer,Void>(){
@Override
protected Void doInBackground(Void... voids) {
int inc = 3 ;
while(true){
publishProgress(inc);
inc -- ;
if(inc == 0 ){
break;
}
try {
TimeUnit.SECONDS.sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
return null;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
popupWindow.dismiss();
GamePanel.thread.setRunning(true);
}
@Override
protected void onProgressUpdate(Integer... values) {
super.onProgressUpdate(values);
tv.setText(values[0]+"");
}
}.execute();
您的button2 onclicklistener中的这段代码怎么样？ 这个想法，可能是有一个bug。 希望可以帮到您。