Android ListView(Selector 背景图片 全选 Checkbox等按钮)
list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" > <ImageView
android:id="@+id/img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_margin="5dp" /> <LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toRightOf="@id/img"
android:orientation="vertical" > <TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"
android:textSize="22sp" /> <TextView
android:id="@+id/info"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"
android:textSize="13sp" />
</LinearLayout> <CheckBox
android:id="@+id/check"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:clickable="false"
android:focusable="false"
android:focusableInTouchMode="false" /> </RelativeLayout>
listview.xml
<?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="match_parent"
android:orientation="vertical" > <LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="horizontal" > <Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="全选" /> <Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="取消" /> <Button
android:id="@+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="反选" /> <TextView
android:id="@+id/totalTv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="共选了多少个" />
</LinearLayout> <ListView
android:id="@+id/mylistview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
android:divider="@android:color/darker_gray"
android:dividerHeight="1dp"
android:fadingEdge="none"
android:scrollingCache="false" >
</ListView> </LinearLayout>
ViewHolder.java
package com.wangzhu.demoselector; import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView; public final class ViewHolder { public ImageView img;
public TextView title;
public TextView info;
public CheckBox checkBox;
}
MyAdapter.java
package com.wangzhu.demoselector; import java.util.HashMap;
import java.util.List;
import java.util.Map; import android.annotation.SuppressLint;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView; public class MyAdapter extends BaseAdapter { private Context context;
private LayoutInflater inflater; private List<Map<String, Object>> items;
private Map<Integer, Boolean> isSelectedMap; public MyAdapter(Context context, List<Map<String, Object>> items) {
this.context = context;
this.items = items;
init();
} private void init() {
Log.d("MyAdapter", "MyAdapter init");
inflater = LayoutInflater.from(context);
isSelectedMap = new HashMap<Integer, Boolean>();
for (int i = 0, size = items.size(); i < size; i++) {
isSelectedMap.put(i, false);
}
} @Override
public int getCount() {
return items.size();
} @Override
public Object getItem(int position) {
return items.get(position);
} @Override
public long getItemId(int position) {
return position;
} @SuppressLint("NewApi")
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder = null;
if (null == convertView) {
convertView = inflater.inflate(R.layout.list_item, null);
// convertView = inflater.inflate(R.layout.list_item_1, null);
viewHolder = new ViewHolder();
viewHolder.img = (ImageView) convertView.findViewById(R.id.img);
viewHolder.title = (TextView) convertView.findViewById(R.id.title);
viewHolder.info = (TextView) convertView.findViewById(R.id.info);
viewHolder.checkBox = (CheckBox) convertView
.findViewById(R.id.check);
convertView.setTag(viewHolder); } else {
viewHolder = (ViewHolder) convertView.getTag();
} viewHolder.img.setBackgroundResource(Integer.parseInt(String
.valueOf(items.get(position).get("img"))));
viewHolder.title.setText(String.valueOf(items.get(position)
.get("title")));
viewHolder.info
.setText(String.valueOf(items.get(position).get("info"))); // 或者在list_item.xml中设置
// android:background="@drawable/list_item_bg_selector" Log.d("MyAdapter",
"1===getView isSelected===" + convertView.isSelected()
+ " isChecked======"
+ viewHolder.checkBox.isChecked()); viewHolder.checkBox.setChecked(isSelectedMap.get(position));
convertView.setPressed(isSelectedMap.get(position));
convertView.setSelected(isSelectedMap.get(position));
convertView.setActivated(isSelectedMap.get(position)); Log.d("MyAdapter",
"2====getView isSelected===" + convertView.isSelected()
+ " isChecked======"
+ viewHolder.checkBox.isChecked()); // convertView
// .setBackgroundResource(R.drawable.list_item_bg_color_selector);
// convertView.setBackgroundResource(R.drawable.list_item_bg_selector); if (isSelectedMap.get(position)) {
convertView.setBackgroundResource(R.drawable.child_list_bg_1);
} else {
convertView.setBackgroundResource(R.drawable.child_list_item);
} return convertView;
} public Map<Integer, Boolean> getIsSelectedMap() {
return isSelectedMap;
} }
ListViewActivity.java
package com.wangzhu.demoselector; import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map; import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ListView;
import android.widget.TextView; public class ListViewActivity extends Activity implements OnClickListener { private final static String TAG = "ListViewActivity";
private MyAdapter myAdapter;
private ListView listView;
private Button button1, button2, button3;
private TextView totalTv; private List<Map<String, Object>> datas; private int count = 0; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listview);
init();
} private void init() {
getDatas(); button1 = (Button) findViewById(R.id.button1);
button1.setOnClickListener(this); button2 = (Button) findViewById(R.id.button2);
button2.setOnClickListener(this); button3 = (Button) findViewById(R.id.button3);
button3.setOnClickListener(this); totalTv = (TextView) findViewById(R.id.totalTv); myAdapter = new MyAdapter(getApplicationContext(), datas);
listView = (ListView) findViewById(R.id.mylistview);
listView.setAdapter(myAdapter);
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);// 多选模式
// listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);// 单选模式 listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Log.d(TAG,
"onItemClick======="
+ String.valueOf(datas.get(position).get(
"title")) + " position=" + position
+ " id=" + id);
ViewHolder viewHolder = (ViewHolder) view.getTag();
CheckBox checkBox = viewHolder.checkBox;
final Map<Integer, Boolean> isSelectedMap = myAdapter
.getIsSelectedMap();
switch (listView.getChoiceMode()) {
case ListView.CHOICE_MODE_SINGLE:
if (!isSelectedMap.get(position)) {
checkBox.toggle();
isSelectedMap.put(position, true);
}
break;
case ListView.CHOICE_MODE_MULTIPLE:
checkBox.toggle();
if (checkBox.isChecked()) {
count++;
} else {
count--;
} handler.sendEmptyMessage(0); if (checkBox.isChecked()) {
view.setBackgroundResource(R.drawable.child_list_bg_1);
} else {
view.setBackgroundResource(R.drawable.child_list_item);
}
isSelectedMap.put(position, checkBox.isChecked());
break;
default:
break;
}
}
});
} public void getDatas() {
datas = new ArrayList<Map<String, Object>>();
Map<String, Object> map = null;
for (int i = 0; i < 20; i++) {
map = new HashMap<String, Object>();
map.put("title", "G" + i);
map.put("info", "Google " + i);
map.put("img", R.drawable.ic_launcher);
datas.add(map);
}
} @Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button1:
allSelected();
break;
case R.id.button2:
cancelSelected();
break;
case R.id.button3:
ReverseSelection();
break;
default:
break;
}
} /**
* 全选
*/
public void allSelected() {
final Map<Integer, Boolean> isSelectedMap = myAdapter
.getIsSelectedMap();
for (int i = 0, size = isSelectedMap.size(); i < size; i++) {
if (!isSelectedMap.get(i)) {
count++;
}
isSelectedMap.put(i, true);
}
dataChanged();
} /**
* 取消
*/
public void cancelSelected() {
final Map<Integer, Boolean> isSelectedMap = myAdapter
.getIsSelectedMap();
for (int i = 0, size = isSelectedMap.size(); i < size; i++) {
if (isSelectedMap.get(i)) {
count--;
}
isSelectedMap.put(i, false);
}
dataChanged();
} /**
* 反选
*/
public void ReverseSelection() {
final Map<Integer, Boolean> isSelectedMap = myAdapter
.getIsSelectedMap();
for (int i = 0, size = isSelectedMap.size(); i < size; i++) {
// isSelectedMap.put(i, !isSelectedMap.get(i));
if (isSelectedMap.get(i)) {
count--;
isSelectedMap.put(i, false);
} else {
count++;
isSelectedMap.put(i, true);
} }
dataChanged();
} public void dataChanged() {
// 自定义的BaseAdapter中调用notifyDataSetChanged方法会重新调用BaseAdapter的getView方法
myAdapter.notifyDataSetChanged();
handler.sendEmptyMessage(0);
} public Handler handler = new Handler() { @Override
public void handleMessage(Message msg) {
totalTv.setText("选中了" + count + "个");
} };
}
以下是本次Demo中用到的图片:
备注:欢迎各位大牛多多指教,谢谢!
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