ListView和SlidingDrawer
XML文件main.xml文件
两个控件按钮btnListView和btnSlidingDrawer
<Button
android:id="@+id/listView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/listviewStr" />
<Button
android:id="@+id/btnSlipdingdrawer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/slidingDrawerStr" />
mylistview.xml文件
一个控件ListView
<?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" >
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</ListView>
</LinearLayout>
mylistview_item.xml文件
两个控制:一个ImageView和一个TextView
<?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" >
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/a" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />
</LinearLayout>
myslidingdrawer.xml文件
<?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" >
<SlidingDrawer
android:id="@+id/slidingDrawer1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:content="@+id/content"
android:handle="@+id/handle" >
<Button
android:id="@+id/handle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Handle" />
<LinearLayout
android:id="@+id/content"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ListView
android:id="@+id/slidingDrawerListView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1">
</ListView>
</LinearLayout>
</SlidingDrawer>
</LinearLayout>
AndroidMainfest.xml文件
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.newer.p0202"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:label="@string/app_name"
android:name=".P0202Activity" >
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="MyListView"></activity>
<activity android:name="MySlidingDrawer"></activity>
<activity android:name="MyViewFlipper"></activity>
</application>
</manifest>
java代码
P0202Activity类
主页面继承Activity实现OnClickListenere
public class P0202Activity extends Activity implements OnClickListener{
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstenceState);
setContentView(R.layout.main);
//启动ListView Activity按钮
Button btnListView = (Button)findViewById(R.id.listView);
btnListView.setOnClickListener(this);
}
public void onClick(View v){
switch(v.getId()){
case R.id.listView:
Intent intent = new Intent(this,MyListView.class);
startActivity(intent);
break;
case R.id.btnSlidingdrawer:
Intent intent2 = new Intent(this,MySlidingDrawer.class);
startActivity(intent2);
break;
default:
break;
}
}
}
MyListView类继承Activity
public class MyListView extends Activity{
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.mylistview);
//模拟数据
List<DataBean> dataList = new ArrayList<DataBean>();
for(int idx=0;idx<20;idx++){
//具体的每一条数据
DataBean dataBean = new DataBean();
dataBean.imageId = R.drawable.a;
dataBean.imageDescription = "具体的说明"+idx;
dataList.add(dataBean);
}
MyListViewAdapter myListViewAdapter = new MyListViewAdapter(dataList,this);
//得到listview控件
ListView listView = (ListView)findViewById(R.id.listView1);
//设置适配器，让listview根据适配器来显示数据
listView.setAdapter(myListViewAdapter);
}
}
创建一个类DataBean
public class DataBean{
public int imageId;
public String imageDescription;
}
创建一个类MyHandler
public class MyHandler{
public ImageView imageView;
public TextView textView;
}
适配器类：
MyListViewAdapter类继承BaseAdapter
public class MyListViewAdapter extends BaseAdapterP{
public int getCount(){
return dataList.size();
}
public Object getItem(int position){
return null;
}
public long getItemId(int position){
return 0;
}
public View getView(int position, View convertView, ViewGroup parent){
//三种方式
//LayoutInflater.from(context);
//(LinearLayout)activity.getlayoutInflater();
//LayoutInflater layoutInflater = (LayoutInflater)myContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
//样式膨胀(要从layout资源中动态的读取一个XML文档)
//效率差的方式
//LayoutInflater layoutInflater = (LayoutInflater)myContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
//LinearLayout lineanLayout = (LinearLayout)layoutInflater.inflater(R.layout.mylistview_item,null);
//得到当前线性布局的两个控件
//ImageView imageView = (ImageView)lineanLayout.findViewById(R.id.imageView1);
//TextView textView = (TextView)lineanLayout.findViewById(R.id.textView1);
//imageView.setImageResource(dataList.get(position).imageId);
//textView.setText(dataList.get(position).imageDescription);
//return lineanLayout;
//效率高的方式
MyHandler myHandler = new MyHandler();
if(null == convertView){//刚开始第一次convertView里面是没有对象
LayoutInflater layoutInflater = (LayoutInflater)myContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
LinearLayout lineanLayout = (LinearLayout)layoutInflater.inflater(R.layout.mylistview_item,null);
//得到当前线性布局的两个控件
ImageView imageView = (ImageView)lineanLayout.findViewById(R.id.imageView1);
TextView textView = (TextView)lineanLayout.findViewById(R.id.textView1);
myHandler.imageView = imageView;
myHandler.textView = textView;
convertView = lineanLayout;
}
myHandler = (MyHandler)convertView.getTag();
myHandler.imageView.setImageResoure(dataList.get(position).imageId);
myHandler.textView.setText(dataList.get(position).imageDescription);
return convertView;
}
}
MySlidingDrawer类继承Activity
public class MySlidingDrawer extends Activity{
protected void onCreate(Bundler savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.myslidingdrawer);
//模拟数据
List<DataBean> dataList = new ArrayList<DataBean>();
for(int idx=0;idx<20;idx++){
//具体的每一条数据
DataBean dataBean = new DataBean();
dataBean.imageId = R.drawable.a;
dataBean.imageDescription = "具体的说明"+idx;
dataList.add(dataBean);
}
MyListViewAdapter myListViewAdapter = new MyListViewAdapter(dataList,this);
ListView listView = (ListView)findViewById(R.id.slidingDrawerListView);
listView.setAdapter(myListViewAdapter);
}
}
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