Android 中Gallery学习

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没事做，看了一个开源框架，是仿网易的图片显示的。其中用到了Gallery，然后就学习了一下Gallery，希望学了之后对看这个开源框架有帮助。

import android.os.Bundle;import android.app.Activity;import android.content.Context;import android.view.View;import android.view.ViewGroup;import android.view.Window;import android.widget.BaseAdapter;import android.widget.Gallery;import android.widget.ImageView;public class MainActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.activity_main);                Gallery gallery = (Gallery) findViewById(R.id.gallery);                //设置适配器        gallery.setAdapter(new MyAdapter(MainActivity.this));    }    class MyAdapter extends BaseAdapter{    private Context mContext;    private int[] myImageIds = {R.drawable.date,R.drawable.picture,R.drawable.aa,R.drawable.bb,R.drawable.cc};        public MyAdapter(Context c){    mContext= c;    }@Overridepublic int getCount() {// TODO Auto-generated method stubreturn myImageIds.length;}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn null;}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn 0;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {//创建一个ImageView对象ImageView iv = new ImageView(mContext);iv.setImageResource(this.myImageIds[position]);//ImageView的Scaletype决定了图片在View上显示时的样子，如进行何种比例的缩放，及显示图片的整体还是部分iv.setScaleType(ImageView.ScaleType.FIT_CENTER);//设置这个ImageView对象的宽和高，单位是dipiv.setLayoutParams(new Gallery.LayoutParams(300, 300));return iv;}        }}

xml文件如下：

<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"    tools:context=".MainActivity" >    <Gallery        android:id="@+id/gallery"        android:layout_width="match_parent"        android:layout_height="match_parent" /></RelativeLayout>

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