我想在按下后退按钮时销毁当前页面，但我的后退按钮在显示 AlertDialog 时不起作用。
我已经像下面那样实现了 onBackPressed，但它仍然不起作用。
private void showPopupSubscribe() {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
View dialogView = getLayoutInflater().inflate(R.layout.paket_subscribe, null);
builder.setView(dialogView);
builder.setCancelable(false);
builder.setIcon(R.drawable.logo_1);
builder.setTitle(R.string.confirm);
final RadioGroup radioGroup = dialogView.findViewById(R.id.rgSubscribe);
builder.setPositiveButton("Next", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
pd.show();
int selected = radioGroup.getCheckedRadioButtonId();
if (selected == R.id.rbMonthly) {
smsCode = "aa";
} else if (selected == R.id.rbTwoWeeks) {
smsCode = "bb";
} else if (selected == R.id.rbWeekly) {
smsCode = "cc";
} else if (selected == R.id.rbTwoDays) {
smsCode = "dd";
}
reqWebCharging(smsCode);
dialog.dismiss();
}
});
dialog = builder.create();
dialog.show();
}
@Override
public void onBackPressed() {
super.onBackPressed();
if (dialog.isShowing()) {
finish();
}
}
显示对话框时，您必须处理后退按钮
dialog.setOnKeyListener(new Dialog.OnKeyListener() {
@Override
public boolean onKey(DialogInterface arg0, int keyCode,
KeyEvent event) {
// TODO Auto-generated method stub
if (keyCode == KeyEvent.KEYCODE_BACK) {
dialog.dismiss();
finish();
}
return true;
}
});
另外onBackPressed()应该是这样的
@Override
public void onBackPressed() {
super.onBackPressed();
finish();
}
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