好,所以我正在创建一个ArrayAdapter并在我的Alert Dialog中使用它,因为我不想在SingleItemSelection对话框上显示默认的单选按钮.
相反,我想更改所选项目的背景,然后当用户按下正按钮时,我将执行与已选择的项目相关的操作.
private void showAlertDialog()
{
final String[] options = getResources().getStringArray(R.array.dialog_options);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,options);
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
dialogBuilder.setTitle("My Dialog");
dialogBuilder.setAdapter(adapter,new OnClickListener()
{
@Override
public void onClick(DialogInterface dialog,int which)
{
Toast.makeText(getApplicationContext(),"item clicked at index " + which,Toast.LENGTH_LONG).show();
// Here I need to change the background color of the item selected and prevent the dialog from being dismissed
}
});
//String strOkay = getString(R.string.okay);
dialogBuilder.setPositiveButton("OK",null); // TODO
dialogBuilder.setNegativeButton("Cancel",null); // nothing simply dismiss
AlertDialog dialog = dialogBuilder.create();
dialog.show();
}
我正在努力解决两个问题.
How do I prevent the dialog from being dismissed when the user clicks on an item
How do I change the background of the item that has been selected when the user clicks on it
解决方法
>您可以将自定义ListView设置为AlertDialog的内容并设置OnItemClickListener
AlertDialog.Builder builder = new AlertDialog.Builder(this);
String[] items = ...;
ListView list = new ListView(this);
list.setAdapter(new ArrayAdapter<String>(this,android.R.layout.select_dialog_item,items));
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0,View view,int pos,long id) {
...
}
});
builder.setView(list);
然后保存对话框的引用
mDialog = builder.show();
以便在必要时解散
mDialog.dismiss();
