android之弹出框AlertDialog

 

// 弹出框public static Dialog buildNewDiaryFunction(Context context) {AlertDialog.Builder builder = new AlertDialog.Builder(context);builder.setTitle("退出");builder.setMessage("您，确定退出？");builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {}});builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {//do nothing}});return builder.create();}

 

@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_BACK) {// 提示退出本应用程序的弹出框MyUtils.buildNewDiaryFunction(MainActivity.this).show();}return true;}