//apk列表的一行 class item_apk extends LinearLayout{     public CheckBox chk_apk;     public TextView txt_name;      public TextView txt_flag;     public ImageView img_apk;     public item_apk(Context ctx, String item_name, String item_flag, Drawable item_draw)     {         super(ctx);         this.setOrientation(HORIZONTAL);         chk_apk = new CheckBox(ctx);         addView(chk_apk,                 new LinearLayout.LayoutParams((int)(MainActivity.wid_scr*0.2),60));             img_apk = new ImageView(ctx);         img_apk.setImageDrawable(item_draw);         addView(img_apk,                 new LinearLayout.LayoutParams((int)(MainActivity.wid_scr*0.2),60));         txt_name = new TextView(ctx);         txt_name.setText(item_name);         addView(txt_name,                 new LinearLayout.LayoutParams((int)(MainActivity.wid_scr*0.4),60));         txt_flag = new TextView(ctx);         txt_flag.setText(item_flag);         addView(txt_flag,                 new LinearLayout.LayoutParams((int)(MainActivity.wid_scr*0.2),60));      } }

// apk列表 class list_apk extends BaseAdapter{      private Context ctx;             private List<item_apk> list_data;     public list_apk(Context context){         ctx = context;         list_data = new ArrayList<item_apk>();     }     @Override     public int getCount() {         // TODO Auto-generated method stub         return list_data.size();     }     @Override     public Object getItem(int arg0) {         // TODO Auto-generated method stub         return list_data.get(arg0);     }     @Override     public long getItemId(int arg0) {         // TODO Auto-generated method stub         return list_data.indexOf(arg0);     }     @Override     public View getView(int position, View convertView, ViewGroup parent) {         item_apk my_item;         if (convertView==null)         {              my_item = new item_apk(ctx,                     (String)list_data.get(position).txt_name.getText(),                     (String)list_data.get(position).txt_flag.getText(),                     list_data.get(position).img_apk.getDrawable());          }         else         {              my_item = (item_apk)convertView;              my_item.txt_name = list_data.get(position).txt_name;              my_item.txt_flag = list_data.get(position).txt_flag;             my_item.img_apk = list_data.get(position).img_apk;          }          return my_item;     }     public void addItem(String txt_name, String txt_flag, Drawable ico_apk)     {          list_data.add(new item_apk(ctx,txt_name,txt_flag,ico_apk));                     } }

public class apk extends ListActivity{     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         list_apk list_ada =  new list_apk(this);         // 包管理器         PackageManager pm = getPackageManager();         //获取手机内所有应用         List<PackageInfo> pi = pm.getInstalledPackages(0);         list_ada.addItem("应用名称",                 "是否系统应用",                 null);          for (int i=0; i<pi.size(); i++){             PackageInfo pii = (PackageInfo) pi.get(i);             String is_sys;             Drawable icon;             if ((pii.applicationInfo.flags & pii.applicationInfo.FLAG_SYSTEM) <= 0)                 is_sys = "否";             else                 is_sys = "是";             if (pii.applicationInfo.loadIcon(pm)!=null)                 icon = (Drawable)pii.applicationInfo.loadIcon(pm);             else                 icon = (Drawable) getResources().getDrawable(R.drawable.ic_launcher);                           list_ada.addItem(String.valueOf(pii.applicationInfo.loadLabel(pm)),                     is_sys,                     icon);                  }         setListAdapter(list_ada);     }     @Override     public boolean onCreateOptionsMenu(Menu menu) {         // Inflate the menu; this adds items to the action bar if it is present.         getMenuInflater().inflate(R.menu.main, menu);         return true;     } }