我在列表视图布局中有 16 个项目。如何让每个项目跳转到另一个活动。我已经尝试过这段代码，但没有任何反应：（
这是群活动.java
package com.test.listview;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
public class GroupActivity extends Activity{
private ListView listView;
private ListViewAdapter listViewAdapter;
private List<Map<String, Object>> listItems;
protected SharedPreferences group_sp;
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.group);
listView=(ListView)findViewById(R.id.group1_list);
listItems=getlistItems();
listViewAdapter=new ListViewAdapter(this, listItems);
listView.setAdapter(listViewAdapter);
listView.setTextFilterEnabled(true);
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,long id) {
Log.i("mm", " onItemClick ");
Intent intent=new Intent();
switch(position){
case 0:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 1:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 2:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 3:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 4:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 5:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 6:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 7:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 8:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 9:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 10:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 11:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 12:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 13:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 14:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
case 15:
intent.setClass(getApplicationContext(), ListViewGroup.class);
GroupActivity.this.startActivity(intent);
break;
}
}
});
}
private List<Map<String, Object>> getlistItems() {
List<Map<String, Object>> listItems = new ArrayList<Map<String, Object>>();
for(int i = 1; i<=16; i++) {
Map<String, Object> map = new HashMap<String, Object>();
map.put("imageButton", R.drawable.goff1);
map.put("textView", "Group"+i);
map.put("imageView",R.drawable.arrow1);
listItems.add(map);
}
return listItems;
}
}
这是来自适配器的代码：
package com.test.listview;
import java.util.List;
import java.util.Map;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
public class ListViewAdapter extends BaseAdapter {
private Context context;
private List<Map<String,Object>> listItems; //group list
private LayoutInflater layoutInflater; //View container
protected SharedPreferences group_sp;
/**Custom list control set*/
public final class ListItemView{
public ImageButton imageButton;
public TextView textView;
public ImageView imageView;
}
public ListViewAdapter(Context context,List<Map<String,Object>> listItems){
this.context=context;
layoutInflater=LayoutInflater.from(context);//创建视图容器设置上下文
this.listItems=listItems;
}
public int getCount() {
return listItems.size();
}
public Object getItem(int position) {
return listItems.get(position);
}
public long getItemId(int position) {
return position;
}
/**list settings*/
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
convertView=layoutInflater.inflate(R.layout.group_list, null);
//get space object
final ImageButton imageButton=(ImageButton)convertView.findViewById(R.id.goff1);
imageButton.setBackgroundResource(R.drawable.goff1);
imageButton.setOnClickListener(new View.OnClickListener() {
boolean flag=true;
public void onClick(View v) {
if(flag){
imageButton.setBackgroundResource(R.drawable.gon1);
flag=false;
}else{
imageButton.setBackgroundResource(R.drawable.goff1);
flag=true;
}
}
});
TextView textView=(TextView)convertView.findViewById(R.id.title);
ImageView imageView=(ImageView)convertView.findViewById(R.id.right_image);
// imageView.setOnClickListener(new View.OnClickListener() {
//
// @Override
// public void onClick(View v) {
// Intent intent=new Intent();
// intent.setClass(context, ListViewGroup.class);
// context.startActivity(intent);
// }
// });
//padding image and word
imageButton.setBackgroundResource((Integer)listItems.get(position).get("imageButton"));
textView.setText((String)listItems.get(position).get("textView"));
imageView.setBackgroundResource((Integer)listItems.get(position).get("imageView"));
//addListener(convertView);
return convertView;
}
}
谁能帮我解决这个问题？谢谢。
如果您想在onItemClick上启动相同的活动，则无需使用switch case在每一行上启动新活动，只需将您的代码更改为：
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view
, int position,long id) {
Log.i("mm", " onItemClick ");
Intent intent=new Intent(GroupActivity.this,ListViewGroup.class);
GroupActivity.this.startActivity(intent);
}
});
尝试使用活动上下文而不是应用程序上下文。
intent.setClass(GroupActivity.this, ListViewGroup.class);