问题描述
- android大神求救。。。listView问题
-
package com.example.listviewdemo;import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;public class MainActivity extends Activity {
RefreshListView listView; MyAdapter myAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); listView=(RefreshListView)findViewById(R.id.listView); myAdapter=new MyAdapter(MainActivity.this); listView.setAdapter(myAdapter); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; }
}
package com.example.listviewdemo;
import android.content.Context;
import android.util.AttributeSet;
import android.widget.ListAdapter;
import android.widget.ListView;public class RefreshListView extends ListView{
public RefreshListView(Context context) { super(context); } public RefreshListView(Context context, AttributeSet attrs) { super(context, attrs); } public RefreshListView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } @Override public void setAdapter(ListAdapter adapter) { super.setAdapter(adapter); }
}
package com.example.listviewdemo;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;public class MyAdapter extends BaseAdapter{
private int count=15;
private Context context;public MyAdapter(Context context){ this.context=context; } @Override public int getCount() { return count; } @Override public Object getItem(int position) { return position; } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { LinearLayout lay=new LinearLayout(context); lay.setOrientation(0); ImageView image=new ImageView(context); image.setImageResource(R.drawable.ic_launcher); TextView text=new TextView(context); text.setText("第"+position+"个"); lay.addView(image); lay.addView(text); return lay; }
}
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >android:id="@+id/listView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>为什么以上代码运行会直接退出。。。。