如何获取在gridview中单击的android togglebutton的位置?
如果我使用以下示例代码,则不会收到该位置的Toast消息。
public class HelloGridView extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(new ToggleButtonAdapter(this));
gridview.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, int position,
long id) {
Toast.makeText(HelloGridView.this, "" + position, Toast.LENGTH_SHORT).show();
}
});
}
}
切换适配器:
public class ToggleButtonAdapter extends BaseAdapter {
private Context mContext;
public ToggleButtonAdapter(Context c) {
mContext = c;
}
@Override
public int getCount() {
return 5;
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view;
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) { // reuse it if it already exists
view = (View) inflater.inflate(R.layout.items, null);
} else {
view = (View) convertView;
}
ToggleButton toggleButton = (ToggleButton) view.findViewById(R.id.toggleButton1);
TextView textView = (TextView) view.findViewById(R.id.textView1);
textView.setText("Toggle Button " + position);
/*toggleButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
ToggleButton t = (ToggleButton) v.findViewById(R.id.toggleButton1);
Toast.makeText(mContext, Boolean.toString(t.isChecked()), Toast.LENGTH_SHORT).show();
}
});*/
return view;
}
}
取消注释切换侦听器以播放该部分,并告诉我如何获得该位置。有没有办法在构建网格视图时将一些数据注入切换按钮,我以后可以参考?我找不到阅读ToggleButton javadoc的方法。
非常感谢!
编辑:
糟糕!这是布局:
main.xml中
<GridView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/gridview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="90dp"
android:numColumns="auto_fit"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:stretchMode="columnWidth"
android:gravity="center"
>
</GridView>
items.xml:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<TextView
android:text="Some label"
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"/>
<ToggleButton
android:id="@+id/toggleButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"/>
</LinearLayout>
</LinearLayout>
答案 0 :(得分:3)
在getView方法中,定义
final int pos = position;
并在onClickListener中,
toggleButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
ToggleButton t = (ToggleButton) v.findViewById(R.id.toggleButton1);
Toast.makeText(mContext, Boolean.toString(t.isChecked()) + " : " + String.valueOf(pos), Toast.LENGTH_SHORT).show();
}
});
工作正常,我检查过:)
这很有效,因为我们在getView方法中创建的OnClickListener是一个 Local Class ,它保留了它访问外层类的变量的本地副本(这就是我们需要的原因)声明pos为final)。该类的一个实例附带了从该方法返回的Toggle Button,其生命周期附加到Toggle Button的生命周期。
有关本地课程的更多信息here
答案 1 :(得分:0)
你好杰森 你可以在你的点击方法中尝试这个: AdapterView.ContextMenuInfo info =(AdapterView.ContextMenInfo)view.getMenuInfo();
int position = info.position;