IPackageStatsObserver 无法解析为类型(Android)
我想计算使用设备的所有缓存内存的总和.为此,我收到编译时间错误:
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
我在代码中已经两次提到这个错误:
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()
加载 Stub 类,找到默认构造函数并调用它以获取 Stub
的新实例.但是我应该编码它,我对此一无所知!?
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!!
推荐答案
要解决您的问题,请按以下步骤操作:
To resolve your issue follow these steps:
Android Studio
- 右键单击您的项目新建 > 文件夹 > AIDL 文件夹
- 按完成
- 右击
aidl
文件夹新建>包 - 插入
android.content.pm
并按 OK - 下载IPackageStatsObserver.aidl一个>
- 复制
android.content.pm
包内的aidl文件 - 构建 > 重建项目
- 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
- 右键
src
文件夹新建>包 - 插入
android.content.pm
- 按完成
- 下载IPackageStatsObserver.aidl一个>
- 复制
android.content.pm
包内的aidl文件 - 选择
totalCacheSize
的类,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
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