ImageSwitch + Gallery 图片展示
效果如下：
包含一个java程序文件，一个 xml布局文件
java代码如下:
public class Main extends Activity {
private static final String tag = "==CrazyIt.org==";
int[] imgs = new int[] { R.drawable.x1, R.drawable.x2, R.drawable.x3,
R.drawable.x5, R.drawable.x4, R.drawable.x1, R.drawable.x2,
R.drawable.x3, R.drawable.x5, R.drawable.x4 };
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final Gallery gallery = (Gallery) findViewById(R.id.g1);
final ImageSwitcher is = (ImageSwitcher) findViewById(R.id.is1);
is.setFactory(new ViewFactory() {
public View makeView() {
// TODO Auto-generated method stub
ImageView iv = new ImageView(Main.this);
iv.setBackgroundColor(0xff0000);
iv.setScaleType(ScaleType.FIT_CENTER);
iv.setLayoutParams(new ImageSwitcher.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
return iv;
}
});
BaseAdapter ba = new BaseAdapter() {
public int getCount() {
// TODO Auto-generated method stub
return imgs.length;
}
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ImageView iv = new ImageView(Main.this);
iv.setImageResource(imgs[position % imgs.length]);
iv.setScaleType(ScaleType.FIT_XY);
iv.setLayoutParams(new Gallery.LayoutParams(75, 100));
return iv;
}
};
gallery.setAdapter(ba);
gallery.setOnItemSelectedListener(new OnItemSelectedListener(){
public void onItemSelected(AdapterView<?> arg0, View arg1,
int pos, long arg3) {
// TODO Auto-generated method stub
is.setImageResource(imgs[pos%imgs.length]);
}
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageSwitcher
android:id="@+id/is1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="3" >
</ImageSwitcher>
<Gallery
android:id="@+id/g1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:spacing="20dip" />
</LinearLayout>
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
xml布局文件：
