前端之家收集整理的这篇文章主要介绍了
完全用代码实现ListView,不涉及任何xml的layout,
前端之家小编觉得挺不错的,现在分享给大家,也给大家做个参考。
package com.pekall;
import java.util.ArrayList;
import android.app.Activity;
import android.app.ListActivity;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Bitmap.Config;
import android.graphics.Paint.Style;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.ContextMenu;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;
public class MainActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ListView listview = new ListView(this);
MyAdapter adapter = new MyAdapter(this,aa);
listview.setAdapter(adapter);
LinearLayout main = new LinearLayout(this);
main.addView(listview);
setContentView(main);
}
String[] aa = {"11111111111","222222222222","3333333333"};
}
class MyListItem extends LinearLayout {
TextView tv;
public MyListItem(Context context,String text) {
super(context);
this.setOrientation(HORIZONTAL);
tv = new TextView(context);
tv.setText(text);
addView(tv,new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.FILL_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT));
}
}
class MyAdapter extends BaseAdapter {
Context ctx;
String[] array;
public MyAdapter(Context ctx,String[] array) {
this.ctx = ctx;
this.array = array;
}
public int getCount() {
return array.length;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return position;
}
public View getView(int position,View convertView,ViewGroup parent) {
LinearLayout l = new MyListItem(ctx,array[position]);
return l;
}
}
}
这样可以定制一个item,主要用于学习之用,还是建议能在xml中实现的尽量别用代码,因为维护xml文件相对容易很多
原文链接:https://www.f2er.com/xml/294277.html