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这是我学习Android时做的一个小程序,程序主要功能是实现一个迷你相册的功能,可以在虚拟机上看到很不错的效果。我设置屏幕的大小为800*600
/*
*ImageSwitcherGallery.java
*/
package android.study_layout
import android.app.Activity
import android.content.Context
import android.os.Bundle
import android.view.View
import android.view.ViewGroup
import android.view.ViewGroup.LayoutParams
import android.view.Window
import android.view.animation.AnimationUtils
import android.widget.*
import android.widget.AdapterView.OnItemSelectedListener
import android.widget.ViewSwitcher.ViewFactory
public class ImageSwitcherGallery extends Activity implements
OnItemSelectedListener, ViewFactory {
private ImageSwitcher image_switcher
private Gallery gallery
private Integer[] mThumbIds = { R.drawable.a1, R.drawable.a2,
R.drawable.a3, R.drawable.a4, R.drawable.a5,
}
private Integer[] mImageIds = { R.drawable.a1, R.drawable.a2,
R.drawable.a3, R.drawable.a4, R.drawable.a5, }
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState)
requestWindowFeature(Window.FEATURE_NO_TITLE)
setContentView(R.layout.image_switcher_gallery)
image_switcher = (ImageSwitcher) findViewById(R.id.switcher)
image_switcher.setFactory(this)
image_switcher.setInAnimation(AnimationUtils.loadAnimation(this,
android.R.anim.fade_in))
image_switcher.setOutAnimation(AnimationUtils.loadAnimation(this,
android.R.anim.fade_out))
gallery = (Gallery) findViewById(R.id.gallery)
gallery.setAdapter(new ImageAdapter(this))
gallery.setOnItemSelectedListener(this)
}
@Override
public View makeView() {
ImageView image = new ImageView(this)
image.setBackgroundColor(0xFF000000)
image.setScaleType(ImageView.ScaleType.FIT_XY)
image.setLayoutParams(new ImageSwitcher.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT))
return image
}
public class ImageAdapter extends BaseAdapter {
public ImageAdapter(Context c) {
mContext = c
}
public int getCount() {
return mThumbIds.length
}
public Object getItem(int position) {
return position
}
public long getItemId(int position) {
return position
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView image = new ImageView(mContext)
image.setImageResource(mThumbIds[position])
image.setAdjustViewBounds(true)
image.setLayoutParams(new Gallery.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT))
return image
}
private Context mContext
}
@Override
public void onItemSelected(AdapterView<?>parent, View view, int position,
long id) {
ImageSwitcher image_switcher = (ImageSwitcher) findViewById(R.id.switcher)
image_switcher.setImageResource(mImageIds[position])
}
@Override
public void onNothingSelected(AdapterView<?>parent) {
}
}
xml文件
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageSwitcher
android:id="@+id/switcher"
android:layout_width="match_parent"
android:layout_height="450dip"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
/>
<Gallery
android:id="@+id/gallery"
android:layout_width="fill_parent"
android:layout_height="120dip"
android:background="#55000000"
android:layout_alignParentLeft="true"
android:layout_alignParentBottom="true"
android:gravity="center_vertical"
android:spacing="30dip"
/>
</RelativeLayout>
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