Ans*_*hul 6 android android-listview android-adapter android-dialog
我正在使用以下代码创建一个Dialog aleart框,其中包含来自studentNames ArrayList的列表项.我正在通过读取子文件数组创建此ArrayList.但是当此代码运行时,它只显示一个零列表项的对话框.我甚至检查了我的studentNames对于null,但它有值.根据文档我需要设置ListAdapter在对话框中显示列表项,但这也不适合我.请帮我找到问题.
ArrayList<String> studentNames = new ArrayList<String>();
for (File file2 : childfile) {
studentNames.add(file2.getName());
}
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle(student.getName()).setAdapter(new ArrayAdapter(context, android.R.layout.simple_list_item_1, studentNames),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
switch (which) {
cases
}
}
});
builder.create();
builder.show();
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Ami*_*oda 28
这是你如何实现它:
final CharSequence[] items = {"1", "2", "3"};
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Select");
builder.setItems(items, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
// Do something with the selection
dialog.dismiss();
}
});
builder.show();
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