你好,我已经创建了一个带有复选框的ListView......但我不知道如何获取所选的复选框文本。以下是activity_main.xml文件的代码:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="top"
android:orientation="vertical"
tools:context=".MygamesActivity" >
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginTop="20dp" />
</LinearLayout>
另一种布局,其中包含复选框以在listview main.list_item.xml中显示
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android">
<CheckBox
android:id="@+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="CheckBox"
/>
</LinearLayout>
这是扩展了 ArrayAdapter 类的类。
package com.wasiff.listview;
import android.content.Context;
import android.content.res.TypedArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView;
public class CheckboxAdapter extends ArrayAdapter<String> {
private LayoutInflater mInflater;
private String[] mStrings;
private TypedArray mIcons;
private int mViewResourceId;
public CheckboxAdapter(Context ctx,int viewResourceId,String[] strings){
super(ctx,viewResourceId,strings);
mInflater = (LayoutInflater)ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mStrings = strings;
mViewResourceId = viewResourceId;
}
public int getCount(){
return mStrings.length;
}
public String getItem(int position){
return mStrings[position];
}
public long getItemId(int position){
return 0;
}
public View getView(int position,View convertView,ViewGroup parent){
convertView = mInflater.inflate(mViewResourceId, null);
CheckBox tv = (CheckBox)convertView.findViewById(R.id.checkBox1);
tv.setText(mStrings[position]);
return convertView;
}
}
这是我的mainActivity类
package com.wasiff.listview;
import android.app.ListActivity;
import android.content.Context;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.ListView;
public class MainActivity extends ListActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Context ctx = getApplicationContext();
Resources res = ctx.getResources();
String[] options = res.getStringArray(R.array.countrynames);
setListAdapter((ListAdapter) new CheckboxAdapter(ctx,R.layout.main_list_item,options));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
最后,我将所有国家保存在“values”文件夹中的“countries.xml”文件中。
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string-array name="countrynames" translatable="false">
<item>Bhutan</item>
<item>Colombia</item>
<item>India</item>
<item>Pakistan</item>
<item>Australia</item>
<item>Srilanka</item>
<item>England</item>
</string-array>
</resources>
现在它显示了listView中的复选框,我想要的是获取选中的复选框文本,并在单击按钮时显示在toast中(进行测试),我按照O'Reilly Android Cookbook上的教程进行了操作,但是我仍然不知道如何设置监听器。