問(wèn)題描述

我想計(jì)算使用設(shè)備的所有緩存內(nèi)存的總和.為此，我收到編譯時(shí)間錯(cuò)誤:

I want to calculate the sum of all the cache memory utilizing the device. For this I am getting a compiled time error:

IPackageStatsObserver cannot be resolved to a type

我在代碼中已經(jīng)兩次提到這個(gè)錯(cuò)誤:

I have mentioned this error 2 times in the code:

public long totalCacheSize(){
    totalSize=0;

    PackageManager packageManager = getApplicationContext().getPackageManager();

     /* List<PackageInfo> packs = packageManager
      .getInstalledPackages(PackageManager.GET_ACTIVITIES);*/
     // PackageManager.GET_META_DATA

    List<PackageInfo> packs = packageManager
            .getInstalledPackages(PackageManager.GET_META_DATA);

    for (int i = 0; i < packs.size(); i++) {

        PackageInfo p = packs.get(i);

        Method getPackageSizeInfo;
        try {
            getPackageSizeInfo = packageManager.getClass()
                    .getMethod("getPackageSizeInfo",
                        String.class, Class.forName("android.content.pm.IPackageStatsObserver"));

            getPackageSizeInfo.invoke(packageManager, p.packageName,
                    new IPackageStatsObserver.Stub() { //error

                        public void onGetStatsCompleted(
                                PackageStats pStats, boolean succeeded)
                                throws RemoteException {

                            totalSize = totalSize + pStats.cacheSize;
                            Log.d("size", totalSize+"");
                            Toast.makeText(getApplicationContext(), "size"+totalSize, Toast.LENGTH_SHORT).show();
                        }
                    }
            );

        } catch (Exception e) {
            try {
                getPackageSizeInfo = packageManager.getClass()
                        .getMethod("getPackageSizeInfo",
                            String.class, Class.forName("android.content.pm.IPackageStatsObserver"));

                getPackageSizeInfo.invoke(packageManager, p.packageName,
                        new IPackageStatsObserver.Stub() { //error

                            public void onGetStatsCompleted(
                                    PackageStats pStats, boolean succeeded)
                                    throws RemoteException {

                                totalSize = totalSize + pStats.cacheSize;
                                Log.d("size", totalSize+"");
                                Toast.makeText(getApplicationContext(), "size"+totalSize, Toast.LENGTH_SHORT).show();
                            }
                        }
                );
            } catch (Exception ee) {
                Log.d("eeeeeeeeeee", "error");
                ee.printStackTrace();
            } 
        } 
    }

    Log.d("return size", totalSize+"");
    Toast.makeText(getApplicationContext(), "return size"+totalSize, Toast.LENGTH_SHORT).show();
    return totalSize;
}

IPackageStatsObserver 在 android SDK 中不可用.可能使用 Class.forName() 加載 Stub 類(lèi)，找到默認(rèn)構(gòu)造函數(shù)并調(diào)用它以獲取 Stub 的新實(shí)例.但是我應(yīng)該編碼它，我對(duì)此一無(wú)所知！?

IPackageStatsObserver is not available in android SDK. Perhaps loading the Stub class using Class.forName(), finding the default constructor and invoke it to get a new instance of a Stub. But what should I code it, I do not know anything about it!?

求救！！

推薦答案

要解決您的問(wèn)題，請(qǐng)按以下步驟操作:

To resolve your issue follow these steps:

Android Studio

• 右鍵單擊您的項(xiàng)目新建 > 文件夾 > AIDL 文件夾
• 按完成
• 右擊aidl文件夾新建>包
• 插入 android.content.pm 并按 OK
• 下載IPackageStatsObserver.aidl
• 復(fù)制android.content.pm包內(nèi)的aidl文件
• 構(gòu)建 > 重建項(xiàng)目

• Right click on your project New > Folder > AIDL Folder
• Press Finish
• Right click on aidl folder New > Package
• Insert android.content.pm and press OK
• Download IPackageStatsObserver.aidl
• Copy the aidl file inside the android.content.pm package
• Build > Rebuild Project

Eclipse

• 右鍵src文件夾新建>包
• 插入 android.content.pm
• 按完成
• 下載IPackageStatsObserver.aidl
• 復(fù)制android.content.pm包內(nèi)的aidl文件
• 選擇 totalCacheSize 的類(lèi)，然后 Source > Organize Imports

• Right click on src folder New > Package
• Insert android.content.pm
• Press Finish
• Download IPackageStatsObserver.aidl
• Copy the aidl file inside the android.content.pm package
• Select class where totalCacheSize is then Source > Organize Imports

這篇關(guān)于IPackageStatsObserver 無(wú)法解析為類(lèi)型(Android)的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！