如何获取应用程序数据的大小+应用程序的数据大小

Question

如何获得应用程序的大小,包括AppData的大小？

目前我使用此代码,但它只获取APK大小.有没有办法获得AppData的大小,就像谷歌设置应用程序那样？

public String getApkSize(Context context, String packageName) {
    try {
        float value = new File(context.getPackageManager().getApplicationInfo(packageName, 0).publicSourceDir).length() / 1048576F;

        if (value <= 0) {
            value = 1;
        }

        return String.format("%.2f", value) + "MB";
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }
    return null;
}

Answer 1

"设置"应用使用该方法getPackageSizeInfo.不幸的是,这个方法是隐藏的,因为它被注释@hide,因此你无法直接使用该方法,但是你需要使用反射来调用它.

将此权限添加到AndroidManifest.xml:

<uses-permission android:name="android.permission.GET_PACKAGE_SIZE"/>

创建AIDL接口IPackageStatsObserver:

package android.content.pm;

import android.content.pm.PackageStats;
/**
 * API for package data change related callbacks from the Package Manager.
 * Some usage scenarios include deletion of cache directory, generate
 * statistics related to code, data, cache usage(TODO)
 * {@hide}
 */
oneway interface IPackageStatsObserver {

    void onGetStatsCompleted(in PackageStats pStats, boolean succeeded);
}

然后你可以像这样使用它:

private void getPackageSizeInfo(Context context, String packageName) {
    try {
        PackageManager packageManager = context.getPackageManager();
        Method getPackageSizeInfo = packageManager.getClass().getMethod("getPackageSizeInfo", String.class, IPackageStatsObserver.class);

        getPackageSizeInfo.invoke(packageManager, packageName, new IPackageStatsObserver.Stub() {
            public void onGetStatsCompleted(PackageStats packageStats, boolean succeeded) throws RemoteException {
                long totalCacheSize = packageStats.cacheSize + packageStats.externalCacheSize;
                long totalDataSize = packageStats.dataSize + packageStats.externalDataSize;
                long totalCodeSize = packageStats.codeSize + packageStats.externalCodeSize;
                long totalSize = totalDataSize + totalCodeSize;

                Log.d(TAG, "Total Size:" + totalSize);
                Log.d(TAG, "App Size:" + totalCodeSize);
                Log.d(TAG, "Data Size:" + totalDataSize);
                Log.d(TAG, "Cache Size:" + totalCacheSize);
            }
        });
    } catch (Exception e) {
        e.printStackTrace();
    }
}