public class MainActivity extends Activity {
ListView list;
String[] abc={"1","2","3"};
MyCustomAdapter adapter;
Button refresh;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
list=(ListView) findViewById(R.id.list);
refresh=(Button) findViewById(R.id.refresh);
adapter=new MyCustomAdapter(MainActivity.this,abc);
list.setAdapter(adapter);
}
private class MyCustomAdapter extends BaseAdapter {
private final Context context;
private ArrayList mData = new ArrayList();
private LayoutInflater mInflater;
private String[] hashmap;
ViewHolder holder = null;
public MyCustomAdapter(Context context,String[] hashMaps) {
super();
this.context = context;
this.hashmap = hashMaps;
mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return hashmap.length;
}
public Object getItem(int position) {
return hashmap.length;
}
public long getItemId(int position) {
return position;
}
@Override
public void notifyDataSetChanged() // Create this function in your adapter class
{
super.notifyDataSetChanged();
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
System.out.println("getView " + position + " " + convertView);
// final ViewHolder holder = null;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.view1, null);
holder = new ViewHolder();
holder.textView = (TextView)convertView.findViewById(R.id.text);
holder.btn = (Button)convertView.findViewById(R.id.refresh);
convertView.setTag(holder);
} else {
holder = (ViewHolder)convertView.getTag();
}
holder.textView.setText(hashmap[position]);
holder.btn.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
RelativeLayout rl = (RelativeLayout)v.getParent();
holder.textView = (TextView)rl.getChildAt(position);
Log.i("position",String.valueOf(position));
holder.textView.setText("10");
}
});
return convertView;
}
}
public static class ViewHolder {
public TextView textView;
public Button btn;
}
}
View.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"
android:id="@+id/real"
>
<TextView
android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:text="Text"
android:layout_marginTop="15dp"
android:layout_marginLeft="20dp"
/>
<Button
android:id="@+id/refresh"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/text"
android:text="button"
android:layout_marginLeft="20dp"
/>
</RelativeLayout>
在我的 ListView 中，当我单击按钮时，适配器视图中的值不会更改。如何解决此问题？该列表包含每个位置的 3 个值。因此，当我单击单击位置的按钮时，该值将发生变化，而不是旧值。
将 getView 方法代码更改如下。
@Override
public View getView(final int position, View convertView,ViewGroup parent) {
View vi = convertView;
final TextView textView;
if (convertView == null)
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
vi = inflater.inflate(R.layout.vi, null);
textView = (TextView) vi.findViewById(R.id.text);
Button btn = (Button) vi.findViewById(R.id.refresh);
textView.setText(hashmap[position]);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Log.i("position ", position + "");
textView.setText("10");
}
});
return vi;
}
本文内容由网友自发贡献，版权归原作者所有，本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容，请联系:hwhale#tublm.com(使用前将#替换为@)
