在获取android设备的所有程序信息一文中介绍了获取手机上所有app信息的方法，下面介绍过滤掉系统app的方法：
MainActivity：
package com.home.getsysapp;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.app.Activity;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.SimpleAdapter;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ListView listView = new ListView(this);
List<Map<String, String>> list = getSysApps();
SimpleAdapter adapter = new SimpleAdapter(this, list,
android.R.layout.simple_list_item_2, new String[] { "appname",
"pname" }, new int[] { android.R.id.text1,
android.R.id.text2, });
listView.setAdapter(adapter);
setContentView(listView);
}
/**
* 获取系统apps
*
* @return
*/
private List<Map<String, String>> getSysApps() {
List<Map<String, String>> list = new ArrayList<Map<String, String>>();
Map<String, String> map = null;
List<PackageInfo> packs = getPackageManager().getInstalledPackages(0);
for (PackageInfo p : packs) {
ApplicationInfo appInfo = p.applicationInfo;
// 为0表示非系统的，为1表示系统的
if ((appInfo.flags & ApplicationInfo.FLAG_SYSTEM) > 0) {
map = new HashMap<String, String>();
String appName = appInfo.loadLabel(getPackageManager())
.toString();
String pname = appInfo.packageName;
map.put("appname", appName);
map.put("pname", pname);
list.add(map);
}
}
return list;
}
}