查询手机中所有应用的权限，名字，原始apk的地址，开机至今的流量

public class FindAllApplication
{
    /**
     * find application's permission in permissions
     * @param context
     * @param permissions : if permissions.length == 0; return all application（not system application）
     */
    public static List<ApplicationItemInfo> findApplication(Context context, String...permissions)
    {
        boolean isIn = false;
        List<ApplicationItemInfo> applicationItemInfos = new ArrayList<ApplicationItemInfo>();

        PackageManager pckMan = context.getPackageManager();

//参数根据需要获得的进行修改，如要查权限必须写GET_PERMISSIONS，否则requestedPermissions的值会是null

        List<PackageInfo> packs = pckMan.getInstalledPackages(PackageManager.GET_PERMISSIONS);
        Log.d("gc", "application size : " + packs.size());
        for (PackageInfo packageInfo : packs)
        {
            //非系统应用
            if ((packageInfo.applicationInfo.flags & packageInfo.applicationInfo.FLAG_SYSTEM) <= 0)
            {

                if(permissions.length == 0)
                {
                    applicationItemInfos.add(getApplicationItemInfo(pckMan, packageInfo));
                }else{
                    if (packageInfo.requestedPermissions != null)
                    {
                        isIn = false;
                        for (String permission : packageInfo.requestedPermissions)
                        {
                            if(checkString(permission, permissions))
                            {
                                isIn = true;
                                break;
                            }
                        }
                        if(isIn)
                        {
                            applicationItemInfos.add(getApplicationItemInfo(pckMan, packageInfo));
                        }
                        
                    }
                }
            }else {
//                Log.d("gc", "system app : "+pckMan.getApplicationLabel(packageInfo.applicationInfo).toString());
            }
        }
        Log.d("gc", "applicationItemInfos.size" + applicationItemInfos.size());
        return applicationItemInfos;
    }
    
    /**
     * 
     * @param source
     * @param strings : if strings.length == 0, return true 
     * @return
     */
    private static boolean checkString(String source, String...strings)
    {
        if(strings.length == 0)
        {
            return true;
        }
        for(String str:strings)
        {
            if(source.contains(str))
            {
                return true;
            }
        }
        return false;
    }
    
    private static ApplicationItemInfo getApplicationItemInfo(PackageManager packageManager,PackageInfo packageInfo)
    {
        ApplicationItemInfo applicationItemInfo = new ApplicationItemInfo();
        applicationItemInfo.setLabel(packageManager.getApplicationLabel(packageInfo.applicationInfo).toString());
        applicationItemInfo.setPackageName(packageInfo.applicationInfo.packageName);
        applicationItemInfo.setIcon(packageManager.getApplicationIcon(packageInfo.applicationInfo));
        applicationItemInfo.setPermission(packageInfo.requestedPermissions);
        applicationItemInfo.setUid(packageInfo.applicationInfo.uid);
        applicationItemInfo.setRx(TrafficStats.getUidRxBytes(applicationItemInfo.getUid()));

        applicationItemInfo.setTx(TrafficStats.getUidTxBytes(applicationItemInfo.getUid()));

applicationItemInfo.setSourceDir(packageInfo.applicationInfo.sourceDir);

        Log.d("gc", " app : "+applicationItemInfo.getLabel());
        return applicationItemInfo;
    }

}

============================================================================================================

获取支持分享的应用的代码：

1.  
2. public static List<ResolveInfo> getShareApps(Context context){ 
3.     List<ResolveInfo> mApps = new ArrayList<ResolveInfo>();  
4.     Intent intent=new Intent(Intent.ACTION_SEND,null);  
5.     intent.addCategory(Intent.CATEGORY_DEFAULT);  
6.     intent.setType("text/plain");  
7.     PackageManager pManager = context.getPackageManager(); 
8.     mApps = pManager.queryIntentActivities(intent,PackageManager.COMPONENT_ENABLED_STATE_DEFAULT);  
9.     return mApps;  
10. } 
11. //由于该方法，返回的并不是 PackageInfo 对象。而是 ResolveInfo。因此获取图片、应用名、包名的方法不一样，如下： 
12.                     PackageManager pManager = MessageSendActivity.this.getPackageManager(); 
13.                      
14.                     List<ResolveInfo> resolveList  = Utils.getShareApps(MessageSendActivity.this); 
15.                     for(int i=0;i<resolveList.size();i++) { 
16.                     ResolveInfo resolve = resolveList.get(i); 
17.                     ShareItemInfo shareItem = new ShareItemInfo(); 
18.                     //set Icon 
19.                     shareItem.setIcon(resolve.loadIcon(pManager)); 
20.                     //set Application Name 
21.                     shareItem.setLabel(resolve.loadLabel(pManager).toString()); 
22.                     //set Package Name 
23.                     shareItem.setPackageName(resolve.activityInfo.packageName); 
24.                     }  

总结：
通过 PackageInfo  获取具体信息方法：
包名获取方法：packageInfo.packageName
icon获取获取方法：packageManager.getApplicationIcon(applicationInfo)
应用名称获取方法：packageManager.getApplicationLabel(applicationInfo)
使用权限获取方法：packageManager.getPackageInfo(packageName,PackageManager.GET_PERMISSIONS)
.requestedPermissions
通过 ResolveInfo 获取具体信息方法：
包名获取方法：resolve.activityInfo.packageName
icon获取获取方法：resolve.loadIcon(packageManager)
应用名称获取方法：resolve.loadLabel(packageManager).toString()