我有一个自定义ListView.每当我将android:background属性设置为行布局时，它都是不可点击的。我还设置了一个布局背景，ListView.当我滚动它时，它给出了它设置的背景，当它停止滚动时，它占用了LinearLayout.我的代码的颜色，如下所示，ListView以及单独的行布局。我尝试将 setandroid:focusable="false"放入xml行布局中，但每当我设置android:background它时，它都不可点击。每当我滚动它时，它会变成白色，然后变成黑色。此外，当我android:background在行布局中设置属性时，TextView它不可点击。主要布局如下..
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:background="#000000"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#000000"
android:orientation="horizontal" >
<TextView android:layout_width="fill_parent"
android:layout_height="50dp"
android:layout_weight="1"
android:textColor="#ffffff"
android:text="hello"/>
<TextView android:layout_width="fill_parent"
android:layout_height="50dp"
android:textColor="#ffffff"
android:layout_weight="1"
android:text="hello"/>
<TextView android:layout_width="fill_parent"
android:layout_height="50dp"
android:layout_weight="1"
android:textColor="#ffffff"
android:text="hello"/>
</LinearLayout>
<ListView android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
></ListView>
</LinearLayout>
The row layout xml
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2007 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:focusable="false"
android:focusableInTouchMode="false"
android:textSize="28sp"
android:id="@+id/text"
android:clickable="true"
android:background="#000000" //Doesn't work with this
android:textAlignment="center"
android:layout_gravity="center_vertical"
android:layout_width="0dip"
android:layout_weight="1.0"
android:layout_height="wrap_content" />
</LinearLayout>
The MainActivity.java
package com.example.list;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
/**
* Demonstrates how to write an efficient list adapter. The adapter used in this example binds
* to an ImageView and to a TextView for each row in the list.
*
* To work efficiently the adapter implemented here uses two techniques:
* - It reuses the convertView passed to getView() to avoid inflating View when it is not necessary
* - It uses the ViewHolder pattern to avoid calling findViewById() when it is not necessary
*
* The ViewHolder pattern consists in storing a data structure in the tag of the view returned by
* getView(). This data structures contains references to the views we want to bind data to, thus
* avoiding calls to findViewById() every time getView() is invoked.
*/
public class MainActivity extends Activity {
private static class EfficientAdapter extends BaseAdapter {
private LayoutInflater mInflater;
public EfficientAdapter(Context context) {
// Cache the LayoutInflate to avoid asking for a new one each time.
mInflater = LayoutInflater.from(context);
// Icons bound to the rows.
}
/**
* The number of items in the list is determined by the number of speeches
* in our array.
*
* @see android.widget.ListAdapter#getCount()
*/
public int getCount() {
return DATA.length;
}
/**
* Since the data comes from an array, just returning the index is
* sufficent to get at the data. If we were using a more complex data
* structure, we would return whatever object represents one row in the
* list.
*
* @see android.widget.ListAdapter#getItem(int)
*/
public Object getItem(int position) {
return position;
}
/**
* Use the array index as a unique id.
*
* @see android.widget.ListAdapter#getItemId(int)
*/
public long getItemId(int position) {
return position;
}
/**
* Make a view to hold each row.
*
* @see android.widget.ListAdapter#getView(int, android.view.View,
* android.view.ViewGroup)
*/
public View getView(int position, View convertView, ViewGroup parent) {
// A ViewHolder keeps references to children views to avoid unneccessary calls
// to findViewById() on each row.
ViewHolder holder;
// When convertView is not null, we can reuse it directly, there is no need
// to reinflate it. We only inflate a new View when the convertView supplied
// by ListView is null.
if (convertView == null) {
convertView = mInflater.inflate(R.layout.rowlayout, null);
// Creates a ViewHolder and store references to the two children views
// we want to bind data to.
holder = new ViewHolder();
holder.text = (TextView) convertView.findViewById(R.id.text);
convertView.setTag(holder);
} else {
// Get the ViewHolder back to get fast access to the TextView
// and the ImageView.
holder = (ViewHolder) convertView.getTag();
}
// Bind the data efficiently with the holder.
holder.text.setText(DATA[position]);
return convertView;
}
static class ViewHolder {
TextView text;
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView lv = (ListView) findViewById(R.id.list);
lv.setFocusable(true);
lv.setFastScrollEnabled(true);
lv.setAdapter(new EfficientAdapter(this));
lv.setOnItemClickListener(new OnItemClickListener()
{
@Override public void onItemClick(AdapterView<?> arg0, View arg1,int position, long arg3)
{
Toast.makeText(getApplicationContext(), "Hello : " + position, Toast.LENGTH_SHORT).show();
}
});
}
private static final String[] DATA = {
"Abbaye de Belloc", "Abbaye du Mont des Cats", "Abertam",
"Abondance", "Ackawi", "Acorn", "Adelost", "Affidelice au Chablis",
"Afuega'l Pitu", "Airag", "Airedale", "Aisy Cendre",
"Allgauer Emmentaler", "Alverca", "Ambert", "American Cheese",
"Ami du Chambertin", "Anejo Enchilado", "Anneau du Vic-Bilh",
"Anthoriro", "Appenzell", "Aragon", "Ardi Gasna", "Ardrahan",
"Armenian String", "Aromes au Gene de Marc", "Asadero", "Asiago",
"Aubisque Pyrenees", "Autun", "Avaxtskyr", "Baby Swiss", "Babybel",
"Baguette Laonnaise", "Bakers", "Baladi", "Balaton", "Bandal",
"Banon", "Barry's Bay Cheddar", "Basing", "Basket Cheese",
"Bath Cheese", "Bavarian Bergkase", "Baylough", "Beaufort",
"Beauvoorde", "Beenleigh Blue", "Beer Cheese", "Bel Paese",
"Bergader", "Bergere Bleue", "Berkswell", "Beyaz Peynir",
"Bierkase", "Bishop Kennedy", "Blarney", "Bleu d'Auvergne"};
}