我的问题是 - 当我点击 <Switch> 时，它首先被切换，然后是 OnCheckedChangeListener叫做。
我想要的是:
<Switch>单击 --> 我显示一个 AlertDialog --> 如果按下是或否 --> 然后用 setChecked(boolean) 翻转 ` , [boolean = true if pressed yes, and false if pressed no].
问题:当<Switch>单击，它会自动翻转。我想首先从 AlertDialog 中用是或否来限定它。
sw_enableDisable
.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (isChecked) {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
getActivity());
alertDialogBuilder
.setMessage(
"Sure you want to enable?. ")
.setCancelable(true)
.setPositiveButton(
getString("YES"),
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
dialog.cancel();
}
})
.setNegativeButton(
getString("NO"),
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
dialog.cancel();
}
});
AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
sw_enDis_alreadyClicked = true;
} else {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
getActivity());
alertDialogBuilder
.setMessage(
"Sure you want to disable?")
.setCancelable(true)
.setPositiveButton(
getString("YES"),
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
dialog.cancel();
}
})
.setNegativeButton(
getString("NO"),
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
dialog.cancel();
}
});
AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
}
}
});
最佳答案
试试这段代码。它对我有用:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// ...
Switch switchButton = (Switch) findViewById(R.id.my_switch_id);
switchButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
final Switch btn = (Switch) v;
final boolean switchChecked = btn.isChecked();
if (btn.isChecked()) {
btn.setChecked(false);
} else {
btn.setChecked(true);
}
String message = "Are you sure you want to disable this setting?";
if (!btn.isChecked()) {
message = "Are you sure you want to enable this setting?";
}
AlertDialog.Builder builder = new AlertDialog.Builder(this); // Change "this" to `getActivity()` if you're using this on a fragment
builder.setMessage(message)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int i) {
// "Yes" button was clicked
if (switchChecked) {
btn.setChecked(true);
} else {
btn.setChecked(false);
}
}
})
.setNegativeButton("Cancel", null)
.show();
}
});
关于android - 如何仅在确认对话框后翻转开关的选中状态？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31640784/