Utils.java

/*
 * Copyright (C) 2012 www.amsoft.cn
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.yzy.supercleanmaster.utils;

// TODO: Auto-generated Javadoc

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.IPackageStatsObserver;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageStats;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.os.Looper;
import android.os.RemoteException;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.List;

/**
 *
 */
public class Utils {

    public static boolean isSystemApp(PackageInfo pInfo) {
        return ((pInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0);
    }

    public static boolean isSystemUpdateApp(PackageInfo pInfo) {
        return ((pInfo.applicationInfo.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0);
    }

    public static boolean isUserApp(PackageInfo pInfo) {
        return (!isSystemApp(pInfo) && !isSystemUpdateApp(pInfo));
    }

    public static long getPkgSize(final Context context, String pkgName) throws NoSuchMethodException,
            InvocationTargetException,
            IllegalAccessException {
       long pkgSize=0;
        // getPackageSizeInfo是PackageManager中的一个private方法，所以需要通过反射的机制来调用
        Method method = PackageManager.class.getMethod("getPackageSizeInfo",
                new Class[]{String.class, IPackageStatsObserver.class});
        // 调用 getPackageSizeInfo 方法，需要两个参数：1、需要检测的应用包名；2、回调
        method.invoke(context.getPackageManager(), new Object[]{
                pkgName,
                new IPackageStatsObserver.Stub() {
                    @Override
                    public void onGetStatsCompleted(PackageStats pStats, boolean succeeded) throws RemoteException {
                        // 子线程中默认无法处理消息循环，自然也就不能显示Toast，所以需要手动Looper一下
                        Looper.prepare();
                        // 从pStats中提取各个所需数据


                      //  pkgSize= pStats.cacheSize+pStats.dataSize+pStats.codeSize;
//                        Toast.makeText(context,
//                                "缓存大小=" + Formatter.formatFileSize(context, pStats.cacheSize) +
//                                        "\n数据大小=" + Formatter.formatFileSize(context, pStats.dataSize) +
//                                        "\n程序大小=" + Formatter.formatFileSize(context, pStats.codeSize),
//                                Toast.LENGTH_LONG).show();
                        // 遍历一次消息队列，弹出Toast
                        Looper.loop();
                    }
                }
        });

        return pkgSize;
    }
    public static void launchBrowser(Activity from, String url) {
        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_VIEW);
        Uri content_url = Uri.parse(url);
        intent.setData(content_url);
        from.startActivity(intent);
    }

    public static boolean isIntentSafe(Activity activity, Uri uri) {
        Intent mapCall = new Intent(Intent.ACTION_VIEW, uri);
        PackageManager packageManager = activity.getPackageManager();
        List<ResolveInfo> activities = packageManager.queryIntentActivities(mapCall, 0);
        return activities.size() > 0;
    }
}