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Android Gallery自定義風格

日期：2017/3/1 10:18:59 编辑：Linux編程

圖片浏覽gallery控件自定義風格，即加上灰色邊框：
1、main.xml文件如下：

2、attrs.xml文件如下：

3、Activity代碼如下：

public class gallery extends Activity {
private int size;
private List<Drawable> list = new ArrayList<Drawable>();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//全屏
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);
final Object data = getLastNonConfigurationInstance();
if(data == null){
getImage();
}else{
list = (List<Drawable>) data;
}
final Gallery g = (Gallery) findViewById(R.id.Gallery);
g.setAdapter(new ImageAdapter(this,list));
//默認顯示Gallery的中間一個圖片
g.setSelection(size/2);
}
@Override
public Object onRetainNonConfigurationInstance() {
return list;
}
//獲取系統應用的圖標
private List<Drawable> getImage(){
PackageManager packageManager = this.getPackageManager();
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> infos = packageManager.queryIntentActivities(intent, 0);
for(ResolveInfo info : infos){
ActivityInfo ai = info.activityInfo;
Drawable icon = ai.loadIcon(packageManager);
list.add(icon);
}
return list;
}
}