public boolean onCreateOptionsMenu(Menu menu){
menu.add(0, 0, 0, "关于");
menu.add(0, 1, 1, "退出");
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
super.onOptionsItemSelected(item);
switch (item.getItemId()) {
case 0:
openAboutDialog();
break;
case 1:
openQiutDialog();
break;
default:
break;
}
return true;
}
/**
* 关于
*/
private void openAboutDialog(){
new AlertDialog.Builder(this).setTitle("关于").setMessage("这是关于的练习")
.setPositiveButton("确定", new DialogInterface.OnClickListener(){
@Override
public void onClick(DialogInterface dialog, int which) {
}}).show();
}
/**
* 退出
*/
private void openQiutDialog(){
new AlertDialog.Builder(this).setTitle("退出").setMessage("你真的要退出吗?")
.setPositiveButton("退出", new DialogInterface.OnClickListener(){
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
}}).setNegativeButton("取消", new DialogInterface.OnClickListener(){
@Override
public void onClick(DialogInterface dialog, int which) {
}}).show();
}
/**
* 回退键提示
*
*/
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(keyCode==KeyEvent.KEYCODE_BACK){
openQiutDialog();
}
return false;
}
菜单按钮,回退键,退出对话框
最新推荐文章于 2023-02-24 08:03:28 发布