获取设备上全部系统app信息

在获取android设备的全部程序信息一文中介绍了获取手机上全部app信息的方法，以下介绍过滤掉系统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;
	}

}