哪位大神能帮我解决下面代码中的listview里面textview的显示混乱问题 纠结好久了 谢谢 复制可以直接执行
源文件:
package com.example.listviewtest;
import java.util.ArrayList;
import android.os.Bundle;
import android.app.Activity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.NumberPicker;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
ListView list;
ArrayList<String> buf = new ArrayList<String>();
LayoutInflater inflater;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list = (ListView)findViewById(R.id.listView1);
inflater = getLayoutInflater();
for (int i=0;i<100;i++)
{
buf.add(String.valueOf(i));
}
list.setAdapter(adapter);
}
BaseAdapter adapter = new BaseAdapter() {
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder viewHolder;
if (convertView == null)
{
convertView = inflater.inflate(R.layout.item, null);
viewHolder = new ViewHolder();
viewHolder.line = (LinearLayout)convertView.findViewById(R.id.single_item);
convertView.setTag(viewHolder);
}
else
{
viewHolder = (ViewHolder)convertView.getTag();
}
TextView text = (TextView)viewHolder.line.getChildAt(1);
text.setText(buf.get(position) + "");
if (Integer.parseInt(buf.get(position)) % 5 == 0)
{
text.setTextColor(20);
viewHolder.line.setClickable(false);
}
viewHolder.line.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (Integer.parseInt(buf.get(position)) % 5 == 0)
{
return;
}
Toast.makeText(MainActivity.this, "position==" + position, Toast.LENGTH_SHORT).show();
}
});
return convertView;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return buf.size();
}
class ViewHolder
{
public LinearLayout line;
}
};
}
布局文件
1.activity_main.xml
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
2.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" >
<LinearLayout
android:id="@+id/single_item"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher"/>
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
android:padding="15dp"
android:text="点我"
android:textColor="#003399"/>
</LinearLayout>