package com.lvshandian.menshen.download;

import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.IPackageStatsObserver;
import android.content.pm.PackageManager;
import android.content.pm.PackageStats;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.os.RemoteException;
import android.support.annotation.Nullable;
import android.text.format.Formatter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;

import com.lvshandian.menshen.R;
import com.lvshandian.menshen.analysesms.adapter.LazyFragment;
import com.lvshandian.menshen.bean.Downloadinfo;
import com.lvshandian.menshen.download.adapter.DownLoadAdapter;
import com.lvshandian.menshen.utils.LogUtils;
import com.lvshandian.menshen.utils.TextUtils;

import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;

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

import butterknife.ButterKnife;

import static com.tandong.sa.eventbus.EventBus.TAG;

/**
 * Created by on 2015/10/30.
 * 创建所有应用的界面
 */
public class FragmentLoad extends LazyFragment {

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    @Override
    public void setMenuVisibility(boolean menuVisible) {
        super.setMenuVisibility(menuVisible);
    }

    @Override
    protected void onVisible() {

    }

    //全局变量，保存当前查询包得信息
    private long cachesize; //缓存大小

    private long datasize;  //数据大小

    private long codesize;  //应用程序大小

    private long totalsize; //总大小

    private ListView listView;
    private List<Downloadinfo> list = new ArrayList<Downloadinfo>();
    private PackageManager mPackageManager;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        EventBus.getDefault().register(this); //第1步: 注册
        View mView = inflater.inflate(R.layout.download_fragment_load, container, false);

        listView = (ListView) mView.findViewById(R.id.listview);
        //获取系统应用
        mPackageManager = getActivity().getPackageManager();
        List<Downloadinfo> packageInfos = null;
        try {
            packageInfos = getAllApps(getActivity());

            LogUtils.e("packageInfos--" + packageInfos.toString());
            DownLoadAdapter adapter = new DownLoadAdapter(getActivity(), packageInfos, R.layout.download_item);
            listView.setAdapter(adapter);
            ButterKnife.bind(this, mView);
            return mView;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return mView;

    }

    //接受方：
    @Subscribe //第2步:注册一个在后台线程执行的方法,用于接收事件
    public void onEventMainThread(String event) {

    }

    /**
     * 查询手机内非系统应用
     *
     * @param context
     * @return
     */
    public List<Downloadinfo> getAllApps(Context context) throws Exception {
        //获取手机内所有应用
        Intent i = new Intent(Intent.ACTION_MAIN, null);
        i.addCategory(Intent.CATEGORY_LAUNCHER);
        List<ResolveInfo> rinfo = getActivity().getPackageManager().queryIntentActivities(i,
                0);
        List<Downloadinfo> appInfos = new ArrayList<Downloadinfo>(); // 保存过滤查到的AppInfo
        // 根据条件来过滤
        for (ResolveInfo app : rinfo) {
            if ((app.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) <= 0) {// 第三方应用

                Downloadinfo temp = getAppInfo(app);

                if (temp.getPkgName().equals("com.lvshandian.menshen")) {

                    continue;
                }
                if (null != temp) {

                    appInfos.add(temp);
                }
            } else {// 系统应用
                Downloadinfo temp = getAppInfo(app);
                if (null != temp && !TextUtils.isEmpty(temp.getPkgName())
                        && !temp.getPkgName().equals("com.lvshandian.menshen")) {
                }
            }
        }
        return appInfos;
    }

    private Downloadinfo getAppInfo(ResolveInfo app) throws Exception {

        Downloadinfo appInfo = new Downloadinfo();
        String appName = app.activityInfo.loadLabel(mPackageManager).toString();
        appInfo.setActivityName(app.activityInfo.name);//activityname
        appInfo.setAppName(appName);
//应用名称       
 appInfo.setAppIcon(app.activityInfo.loadIcon(mPackageManager));//应用头像        appInfo.setPkgName(app.activityInfo.packageName);//应用包名        queryPacakgeSize(app.activityInfo.packageName);        appInfo.setApkSize(formateFileSize(totalsize));//应用大小        return appInfo;    }    public void queryPacakgeSize(String pkgName) throws Exception {        if (pkgName != null) {            if (mPackageManager == null) {                mPackageManager = getActivity().getPackageManager();// 得到被反射调用函数所在的类对象            }            try {                String methodName = "getPackageSizeInfo";// 想通过反射机制调用的方法名                Class<?> parameterType1 = String.class;// 被反射的方法的第一个参数的类型                Class<?> parameterType2 = IPackageStatsObserver.class;// 被反射的方法的第二个参数的类型                Method getPackageSizeInfo = mPackageManager.getClass().getMethod(                        methodName, parameterType1, parameterType2);                getPackageSizeInfo.invoke(mPackageManager, pkgName, new PkgSizeObserver());            } catch (Exception ex) {                LogUtils.e("tag", "queryPkgSize()-->NoSuchMethodException");                ex.printStackTrace();                throw ex; // 抛出异常            }        }    }    //aidl文件形成的Bindler机制服务类    public class PkgSizeObserver extends IPackageStatsObserver.Stub {        /***         * 回调函数，         *         * @param pStats    ,返回数据封装在PackageStats对象中         * @param succeeded 代表回调成功         */        @Override        public void onGetStatsCompleted(PackageStats pStats, boolean succeeded)                throws RemoteException {            // TODO Auto-generated method stub            cachesize = pStats.cacheSize; //缓存大小            datasize = pStats.dataSize;  //数据大小            codesize = pStats.codeSize;  //应用程序大小            totalsize = cachesize + datasize + codesize;            LogUtils.i(TAG, "cachesize--->" + cachesize + " datasize---->" + datasize + " codeSize---->" + codesize);        }    }    //系统函数，字符串转换 long -String (kb)    private String formateFileSize(long size) {        return Formatter.formatFileSize(getActivity(), size);    }    @Override    public void onDestroyView() {        super.onDestroyView();        ButterKnife.unbind(this);        EventBus.getDefault().unregister(this);//反注册    }}

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Android中获取应用程序(包)的大小—–PackageManager的使用(二)