main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Gallery android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/gallery1"></Gallery>
<LinearLayout android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:id="@+id/indicator"
android:gravity="center">
</LinearLayout>
</RelativeLayout>
MainActivity.java
package com.asfman;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;
public class GalleryTest extends Activity {
private Gallery gallery;
private int curPos = 0;
private Runnable runnable;
private int delayTime = 5000;
private Handler uiHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
if(curPos >= gallery.getCount()) curPos = 0;
gallery.setSelection(curPos);
}
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
gallery = (Gallery) findViewById(R.id.gallery1);
ImageAdapter imageAdapter = new ImageAdapter(this);
gallery.setAdapter(imageAdapter);
gallery.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0, View view,
int position, long id) {
Log.i("info", "selected:" + position);
LinearLayout oLayout = (LinearLayout) findViewById(R.id.indicator);
for(int i = 0; i < gallery.getAdapter().getCount(); i++) {
ImageView oView = ((ImageView)oLayout.getChildAt(i));
oView.setImageResource(position == i ? R.drawable.home_light_frame : R.drawable.home_dark_frame);
}
uiHandler.removeCallbacks(runnable);
uiHandler.postDelayed(runnable, delayTime);
curPos = position;
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
}
});
gallery.setOnItemClickListener(new OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(GalleryTest.this, "positon:" + position, Toast.LENGTH_LONG).show();
}
});
//gallery.setSelection(1);
LinearLayout oLayout = (LinearLayout) findViewById(R.id.indicator);
for(int i = 0; i < gallery.getAdapter().getCount(); i++) {
ImageView oView = new ImageView(this);
oView.setImageResource(R.drawable.home_dark_frame);
oLayout.addView(oView);
}
runnable = run();
uiHandler.postDelayed(runnable, delayTime);
}
private Runnable run() {
return new Runnable() {
@Override
public void run() {
uiHandler.sendEmptyMessage(1);
curPos++;
}
};
}
}
class ImageAdapter extends BaseAdapter
{
private Context mContext;
private int[] resIds = new int[]{ R.drawable.azk, R.drawable.jp, R.drawable.azk, R.drawable.jp, R.drawable.azk, R.drawable.jp};
public ImageAdapter(Context context)
{
mContext = context;
}
// 返回图像总数
public int getCount()
{
return resIds.length;
}
public Object getItem(int position)
{
return position;
}
public long getItemId(int position)
{
return position;
}
// 返回具体位置的ImageView对象
public View getView(int position, View convertView, ViewGroup parent)
{
Log.i("info", "------------------getView:" + position);
if(convertView == null) {
LayoutInflater layoutInflater = LayoutInflater.from(mContext);
convertView = layoutInflater.inflate(R.layout.item, null);
}
// 设置当前图像的图像（position为当前图像列表的位置）
ImageView oImageView = (ImageView) convertView.findViewById(R.id.img);
oImageView.setImageResource(resIds[position]);
return convertView;
}
}
posted on 2011-08-04 14:19
汪杰 阅读(1644)
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