Android基礎TOP4_1：點擊物理按鈕彈出退出提示框

標籤：title   als   dismiss   執行   build   repeat   err   標題   nis   

JAVA:

public class MainActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);            }    //點擊物理按鈕時，執行退出提示public boolean onKeyDown(int keyCode,KeyEvent event){    if(keyCode==KeyEvent.KEYCODE_BACK && event.getRepeatCount()==0){        creatdialog();    }    return false;    }    private void creatdialog() {    // TODO Auto-generated method stub    AlertDialog.Builder b=new Builder(MainActivity.this);    //設定提示框內容    b.setMessage("確認退出麼");    //設定標題列    b.setTitle("提示");    b.setPositiveButton("確認",new OnClickListener() {                public void onClick(DialogInterface dialog, int which) {            // TODO Auto-generated method stub            //點確定時退出程式,並隱藏此對話方塊            dialog.dismiss();            MainActivity.this.finish();        }    }).setNegativeButton("取消",new OnClickListener() {                @Override        public void onClick(DialogInterface dialog, int which) {            // TODO Auto-generated method stub            //點擊取消時只隱藏對話方塊            dialog.dismiss();        }    });    b.create().show();    }  }

 

Android基礎TOP4_1：點擊物理按鈕彈出退出提示框