java 如何实现 AlertDialog.Builder 选定项单击事件？
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How to implement an AlertDialog.Builder selected item click event?
提问by co2f2e
I want to implement AlertDialog.Builderselected items click event. Below is what I have tried so far. I'm quite new to Android and I'm not sure how to access that event. How to implement the click event for each individual item in the list?
我想实现AlertDialog.Builder选定项目的点击事件。以下是我迄今为止尝试过的。我对 Android 很陌生，我不确定如何访问该事件。如何为列表中的每个单独的项目实现点击事件？
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
public class MakeCallAlertDialog {
public static AlertDialog.Builder getAlertDialog(String strArray[],
String strTitle, Activity activity) {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(activity);
alertDialogBuilder.setTitle(strTitle);
alertDialogBuilder.setItems(strArray, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int arg) {
// TODO Auto-generated method stub
}
});
return alertDialogBuilder;
}
}
回答by A--C
Since you assigned an OnClickListenerspecific to that method, the intparameter is the position in the list:
由于您OnClickListener为该方法分配了特定内容，因此int参数是列表中的位置：
Parameters
dialogThe dialog that received the click.
whichThe button that was clicked (e.g. BUTTON1) orthe position of the item clicked
参数
dialog收到点击的对话框。
which被点击的按钮（例如 BUTTON1）或被点击的项目的位置
This means inside your method, you should be able to do this:
这意味着在您的方法中，您应该能够做到这一点：
public static AlertDialog.Builder getAlertDialog(final String strArray[],
String strTitle, final Activity activity) {
AlertDialog.Builder alertDialogBuilder =
new AlertDialog.Builder(activity);
alertDialogBuilder.setTitle(strTitle);
alertDialogBuilder.setItems(strArray,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(activity, strArray [which], Toast.LENGTH_SHORT).show();
//rest of your implementation
}
});
return alertDialogBuilder;
}
回答by Akbari Dipali
in onClick() event use switch statement to write click method for each button.
在 onClick() 事件中使用 switch 语句为每个按钮编写单击方法。
@Override
public void onClick(DialogInterface dialogInterface, int arg) {
// TODO Auto-generated method stub
switch (arg) {
case 0:
//you code for button at 0 index click
break;
case 1:
//you code for button at 1 index click
break;
default:
break;
}
}
Here, arg indicates the index of the button pressed. you can also access that button using strArray[arg]
这里，arg 表示按下的按钮的索引。您还可以使用 strArray[arg] 访问该按钮
回答by Maulik
Check my answer below if you are using single choice item selected for the strArray: Try this code
如果您使用为 strArray 选择的单项选择项，请检查下面我的回答：试试这个代码
int selectedItem = 0;
// here take TempSelectOneTypeList = strArray
// 这里取 TempSelectOneTypeList = strArray
AlertDialog.Builder alt_bld = new AlertDialog.Builder(
Activity_Form_Data.this);
alt_bld.setTitle("Select One");
selectedItem = 0;
for (int j = 0; j < TempSelectOneTypeList.length; j++) {
if (txt_sub_lable2
.getText()
.toString()
.equals(TempSelectOneTypeList[j].toString())) {
selectedItem = j;
}
}
Log.i(TAG, "Selected Item is " + selectedItem);
alt_bld.setSingleChoiceItems(
ArraylistSelectOneTypeList.get(selected),
selectedItem,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int item) {
selectedItem = item;
// you can ocde here for the perticular selected item
}
});
alt_bld.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
txt_sub_lable2
.setText(""
+ TempSelectOneTypeList[selectedItem]
.toString());
}
});
alt_bld.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
dialog.dismiss();
}
});
AlertDialog alert = alt_bld.create();
alert.show();
Hope it will solve your problem
希望它能解决你的问题
