android用户界面-组件Widget-画廊视图Gallery
Android的Gallery控件是个很不错的看图控件,大大减轻了开发者对于看图功能的开发,而且效果也比较美观。
/Chapter04_UI_Gallery01/src/com/amaker/test/MainActivity.java
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package com.amaker.test;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
public class MainActivity extends Activity {
/** Called when the activity is first created. */
@Override
//创建时被调用
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Gallery g = (Gallery) findViewById(R.id.Gallery01);
g.setAdapter(new MyAdapter(this));
}
class MyAdapter extends BaseAdapter{
Context context;
MyAdapter(Context context){
this.context = context;
}
private Integer[] imgs = {
R.drawable.gallery_photo_1,
R.drawable.gallery_photo_2,
R.drawable.gallery_photo_3,
R.drawable.gallery_photo_4,
R.drawable.gallery_photo_5,
R.drawable.gallery_photo_6,
R.drawable.gallery_photo_7,
R.drawable.gallery_photo_8,
R.drawable.gallery_photo_1,
R.drawable.gallery_photo_2,
R.drawable.gallery_photo_3,
R.drawable.gallery_photo_4,
R.drawable.gallery_photo_5,
R.drawable.gallery_photo_6,
R.drawable.gallery_photo_7,
R.drawable.gallery_photo_8
};
public int getCount() {
return imgs.length;
}
public Object getItem(int item) {
return item;
}
public long getItemId(int id) {
return id;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView = new ImageView(context);
imageView.setImageResource(imgs[position]);
imageView.setScaleType(ImageView.ScaleType.FIT_XY);
imageView.setLayoutParams(new Gallery.LayoutParams(136, 88));
return imageView;
}
}
}
/Chapter04_UI_Gallery01/res/layout/main.xml
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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Gallery
android:id="@+id/Gallery01"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</Gallery>
</LinearLayout>