Gallery简单应用

package com.example.gallerydemo;

import android.content.Context;
import android.graphics.Color;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.LinearLayout.LayoutParams;

public class GalleryAdapter extends BaseAdapter {
private Context mycon;
private int[] data;

public GalleryAdapter(Context mycon, int[] data) {
this.mycon = mycon;
this.data = data;
}

@Override
public int getCount() {
// TODO Auto-generated method stub
return data.length;
}

@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return data[position];
}

@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return data[position];
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView img = new ImageView(mycon);
img.setBackgroundColor(Color.BLACK);
img.setImageResource(data[position]);//设置文件资源
img.setLayoutParams(new Gallery.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
return img;
}

}

<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: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" >

<Gallery
android:id="@+id/ga"
android:layout_width="match_parent"
android:layout_height="match_parent" />

</RelativeLayout>

package com.example.gallerydemo;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.Gallery;

public class MainActivity extends Activity {
private Gallery ga;
private int[] data = { R.drawable.addpeople, R.drawable.ic_launcher,
R.drawable.star_empty, R.drawable.star_full, R.drawable.tb,
R.drawable.tb2 };

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ga = (Gallery) findViewById(R.id.ga);
ga.setAdapter(new GalleryAdapter(MainActivity.this, data));
}

@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;
}

}