接着上一篇，我们注册了几个用户，用户表如下：
下面我们用ListView将表中数据显示出来吧！
首先看一下main.xml：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" > <Button android:id="@+id/btn_query" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="查询所有用户" /> <ListView android:id="@+id/lv_users" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_below="@+id/btn_query" > </ListView></RelativeLayout>
然后MainActivity.java:
package com.example.listviewdemo;import java.util.List;import cn.bmob.v3.Bmob;import cn.bmob.v3.BmobQuery;import cn.bmob.v3.listener.FindListener;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ListView;import android.widget.Toast;public class MainActivity extends Activity { private Button mButtonQuery; private ListView mListViewUsers; private ListViewAdapter adapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Bmob.initialize(this, "8f3ffb2658d8a3366a70a0b0ca0b71b2");// 初始化Bmob mButtonQuery = (Button) findViewById(R.id.btn_query); mListViewUsers = (ListView) findViewById(R.id.lv_users); mButtonQuery.setOnClickListener(new OnClickListenerImpl()); } private class OnClickListenerImpl implements OnClickListener { @Override public void onClick(View v) { BmobQuery<User> query = new BmobQuery<User>();// 查询类 query.findObjects(MainActivity.this, new FindListener<User>() { @Override public void onSuccess(List<User> list) { adapter = new ListViewAdapter(MainActivity.this, list);// 实例化 mListViewUsers.setAdapter(adapter); } @Override public void onError(int arg0, String arg1) { Toast.makeText(MainActivity.this, "查询失败！", 3).show(); } }); } }}ListViewAdapter.java:package com.example.listviewdemo;import java.util.List;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView;public class ListViewAdapter extends BaseAdapter { private Context context; private List<User> list; private LayoutInflater inflater; public ListViewAdapter(Context context, List<User> list) { this.context = context; this.list = list; inflater = LayoutInflater.from(context); } @Override public int getCount() { return list.size(); } @Override public Object getItem(int position) { return list.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder viewHolder = null; if (convertView == null) { viewHolder = new ViewHolder(); convertView = inflater.inflate(R.layout.listview_item, null); viewHolder.tv_idTextView = (TextView) convertView .findViewById(R.id.tv_id); viewHolder.tv_usernameTextView = (TextView) convertView .findViewById(R.id.tv_username); viewHolder.tv_userPasswordTextView = (TextView) convertView .findViewById(R.id.tv_userpassword); viewHolder.tv_timeTextView = (TextView) convertView .findViewById(R.id.tv_time); convertView.setTag(viewHolder); } else { viewHolder = (ViewHolder) convertView.getTag(); } viewHolder.tv_idTextView .setText(list.get(position).getObjectId() + "|"); viewHolder.tv_usernameTextView.setText(list.get(position).getUserName() + "|"); viewHolder.tv_userPasswordTextView.setText(list.get(position) .getUserPassword() + "|"); viewHolder.tv_timeTextView.setText(list.get(position).getCreatedAt()); return convertView; } class ViewHolder { private TextView tv_idTextView; private TextView tv_usernameTextView; private TextView tv_userPasswordTextView; private TextView tv_timeTextView; }}list_item.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="horizontal" > <TextView android:id="@+id/tv_id" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:id="@+id/tv_username" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:id="@+id/tv_userpassword" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:id="@+id/tv_time" android:layout_width="wrap_content" android:layout_height="wrap_content" /></LinearLayout>
User.java:
package com.example.logintest;import cn.bmob.v3.BmobObject;public class User extends BmobObject { private String userPassword; public String getUserPassword() { return userPassword; } public void setUserPassword(String userPassword) { this.userPassword = userPassword; } public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } private String userName;}最后配置文件：
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.listviewdemo" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="17" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.READ_PHONE_STATE" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.READ_LOGS" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name="com.example.listviewdemo.MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application></manifest>
看一下文件：
运行实例：
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