问题如图片所示,跪求大神解救!下面是各个文件,估计是布局有问题,再次拜求大神解救!
.xml
<LinearLayout 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"
android:background="#000"
android:descendantFocusability="blocksDescendants"
android:orientation="vertical" > <LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:descendantFocusability="blocksDescendants"> <ImageView
android:id="@+id/iv"
android:layout_width="wrap_content"
android:layout_height="wrap_content" /> <ImageButton
android:id="@+id/ibtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="300dp"/>
</LinearLayout> <ListView
android:id="@+id/lv"
android:layout_width="wrap_content"
android:layout_height="match_parent" /></LinearLayout>MainActivity.javapackage com.example.androidlistv4;import java.util.List;
import java.util.Map;import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.Toast;public class MainActivity extends Activity { private List<Map<String, Object>> mdata;
private MyAdapter madapter;
private ListView lstv; private static Activity _instance;
public static Activity getInstance() {
return _instance;
} @Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
_instance = this;
mdata = MyData.getData();
madapter = new MyAdapter(this);
lstv = (ListView)findViewById(R.id.lv);
lstv.setAdapter(madapter);
lstv.setOnItemClickListener(
new AdapterView.OnItemClickListener() { @Override
public void onItemClick(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
// Toast.makeText(getBaseContext(), "ListitemClicked!!!", 1000).show();
MyDialog.showInfo();
}
});
}}MyAdapter.javapackage com.example.androidlistv4;import com.example.androidlistv4.ViewHolder;import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
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.ListAdapter;
import android.widget.Toast;public class MyAdapter extends BaseAdapter { private LayoutInflater mInflater;
private Context context;
public MyAdapter(Context mcontext)
{
// TODO Auto-generated constructor stub
this.mInflater = LayoutInflater.from(mcontext);
context = mcontext;
} @Override
public int getCount() {
// TODO Auto-generated method stub
return MyData.getData().size();// 相当于mData.size();
} @Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
} @Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
} @Override
public View getView(int position, View convertview, ViewGroup parent)
{
// TODO Auto-generated method stub ViewHolder holder = null;
if (convertview == null) {
holder = new ViewHolder();
convertview = mInflater.inflate(R.layout.activity_main, null); holder.imgv = (ImageView) convertview.findViewById(R.id.iv);
holder.imgb = (ImageButton) convertview.findViewById(R.id.ibtn); convertview.setTag(holder);
} else {
holder = (ViewHolder) convertview.getTag();
} holder.imgv.setBackgroundResource((Integer) MyData.getData()
.get(position).get("song"));
holder.imgb.setBackgroundResource((Integer) MyData.getData()
.get(position).get("bofang")); holder.imgb.setOnClickListener(new ImageView.OnClickListener()
{
public void onClick(View v){
// Toast.makeText(context, "Imgbtn Clicked!!!", 1000).show();
MyDialog.showInfo();
}
});
holder.imgv.setOnClickListener(new ImageView.OnClickListener()
{
public void onClick(View v){
// Toast.makeText(context, "ImgView Clicked!!!", 1000).show();
MyDialog.showInfo();
}
});
return convertview;
}}MyData.javapackage com.example.androidlistv4;import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;public class MyData { public MyData() {
// TODO Auto-generated constructor stub
} public static List<Map<String, Object>> getData()
{
List<Map<String, Object>> mlst = new ArrayList<Map<String,Object>>();
Map<String, Object> map1 = new HashMap<String, Object>();
map1.put("song", R.drawable.music);
map1.put("bofang", R.drawable.play);
Map<String, Object> map2 = new HashMap<String, Object>();
map2.put("song", R.drawable.music);
map2.put("bofang", R.drawable.play); Map<String, Object> map3 = new HashMap<String, Object>();
map3.put("song", R.drawable.music);
map3.put("bofang", R.drawable.play); Map<String, Object> map4 = new HashMap<String, Object>();
map4.put("song", R.drawable.music);
map4.put("bofang", R.drawable.play); mlst.add(map1);
mlst.add(map2);
mlst.add(map3);
mlst.add(map4);
return mlst;
}
}MyHolder.javapackage com.example.androidlistv4;import android.widget.ImageButton;
import android.widget.ImageView;public class ViewHolder { public ImageView imgv;
public ImageButton imgb;}android listview布局imageview图片class
.xml
<LinearLayout 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"
android:background="#000"
android:descendantFocusability="blocksDescendants"
android:orientation="vertical" > <LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:descendantFocusability="blocksDescendants"> <ImageView
android:id="@+id/iv"
android:layout_width="wrap_content"
android:layout_height="wrap_content" /> <ImageButton
android:id="@+id/ibtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="300dp"/>
</LinearLayout> <ListView
android:id="@+id/lv"
android:layout_width="wrap_content"
android:layout_height="match_parent" /></LinearLayout>MainActivity.javapackage com.example.androidlistv4;import java.util.List;
import java.util.Map;import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.Toast;public class MainActivity extends Activity { private List<Map<String, Object>> mdata;
private MyAdapter madapter;
private ListView lstv; private static Activity _instance;
public static Activity getInstance() {
return _instance;
} @Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
_instance = this;
mdata = MyData.getData();
madapter = new MyAdapter(this);
lstv = (ListView)findViewById(R.id.lv);
lstv.setAdapter(madapter);
lstv.setOnItemClickListener(
new AdapterView.OnItemClickListener() { @Override
public void onItemClick(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
// Toast.makeText(getBaseContext(), "ListitemClicked!!!", 1000).show();
MyDialog.showInfo();
}
});
}}MyAdapter.javapackage com.example.androidlistv4;import com.example.androidlistv4.ViewHolder;import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
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.ListAdapter;
import android.widget.Toast;public class MyAdapter extends BaseAdapter { private LayoutInflater mInflater;
private Context context;
public MyAdapter(Context mcontext)
{
// TODO Auto-generated constructor stub
this.mInflater = LayoutInflater.from(mcontext);
context = mcontext;
} @Override
public int getCount() {
// TODO Auto-generated method stub
return MyData.getData().size();// 相当于mData.size();
} @Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
} @Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
} @Override
public View getView(int position, View convertview, ViewGroup parent)
{
// TODO Auto-generated method stub ViewHolder holder = null;
if (convertview == null) {
holder = new ViewHolder();
convertview = mInflater.inflate(R.layout.activity_main, null); holder.imgv = (ImageView) convertview.findViewById(R.id.iv);
holder.imgb = (ImageButton) convertview.findViewById(R.id.ibtn); convertview.setTag(holder);
} else {
holder = (ViewHolder) convertview.getTag();
} holder.imgv.setBackgroundResource((Integer) MyData.getData()
.get(position).get("song"));
holder.imgb.setBackgroundResource((Integer) MyData.getData()
.get(position).get("bofang")); holder.imgb.setOnClickListener(new ImageView.OnClickListener()
{
public void onClick(View v){
// Toast.makeText(context, "Imgbtn Clicked!!!", 1000).show();
MyDialog.showInfo();
}
});
holder.imgv.setOnClickListener(new ImageView.OnClickListener()
{
public void onClick(View v){
// Toast.makeText(context, "ImgView Clicked!!!", 1000).show();
MyDialog.showInfo();
}
});
return convertview;
}}MyData.javapackage com.example.androidlistv4;import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;public class MyData { public MyData() {
// TODO Auto-generated constructor stub
} public static List<Map<String, Object>> getData()
{
List<Map<String, Object>> mlst = new ArrayList<Map<String,Object>>();
Map<String, Object> map1 = new HashMap<String, Object>();
map1.put("song", R.drawable.music);
map1.put("bofang", R.drawable.play);
Map<String, Object> map2 = new HashMap<String, Object>();
map2.put("song", R.drawable.music);
map2.put("bofang", R.drawable.play); Map<String, Object> map3 = new HashMap<String, Object>();
map3.put("song", R.drawable.music);
map3.put("bofang", R.drawable.play); Map<String, Object> map4 = new HashMap<String, Object>();
map4.put("song", R.drawable.music);
map4.put("bofang", R.drawable.play); mlst.add(map1);
mlst.add(map2);
mlst.add(map3);
mlst.add(map4);
return mlst;
}
}MyHolder.javapackage com.example.androidlistv4;import android.widget.ImageButton;
import android.widget.ImageView;public class ViewHolder { public ImageView imgv;
public ImageButton imgb;}android listview布局imageview图片class
<LinearLayout 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"
android:background="#000"
android:descendantFocusability="blocksDescendants"
android:orientation="vertical" > <LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:descendantFocusability="blocksDescendants">
定义两个xml文件:
把 <LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:descendantFocusability="blocksDescendants"> <ImageView
android:id="@+id/iv"
android:layout_width="wrap_content"
android:layout_height="wrap_content" /> <ImageButton
android:id="@+id/ibtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="300dp"/>
</LinearLayout>
与
<ListView
android:id="@+id/lv"
android:layout_width="wrap_content"
android:layout_height="match_parent" />
分做两个xml就可以了、