以下是显示listview项目和onclick侦听器操作的代码。
ListView list = (ListView) findViewById(R.id.list);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
this, R.array.list,
android.R.layout.simple_list_item_1);
list.setAdapter(adapter);
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> l, View v, int position,
long id) {
String sel = (String) adapterView
.getItemAtPosition(position);
Toast.makeText(MyExample.this, "Your selection: " + sel, Toast.LENGTH_SHORT).show();
if (sel.equals("Photos"){
startActivity(new Intent(MyExample.this, Photos.class));
}
}
});
现在,我需要实现只在双击时选择列表项。我尝试使用GestureDetector如下:
GestureDetector gestureDectector = new GestureDetector(this, new GestureListener());
list.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
gestureDectector.onTouchEvent(event);
return true;
}
});
public class GestureListener extends GestureDetector.SimpleOnGestureListener {
public boolean onDown(MotionEvent e) {
return true;
}
public boolean onDoubleTap(MotionEvent e) {
Log.d("Double_Tap", "Yes, Clicked");
return true;
}
}
但我不知道如何在ItemClickListener中获取GestureDetector实现中的选定项目,并根据所选列表项启动另一个活动。
任何人都可以帮助我。
答案 0 :(得分:6)
使用pointToPosition
方法中列表视图的onDoubleTap
方法:
int position = list.pointToPosition(e.getX(), e.getY());