PackageManager分析(1)通过反射获取package size

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通过反射获取package size

源码地址

添加权限

1
android.permission.GET_PACKAGE_SIZE

核心代码

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private void getPackageInfo(Context context, String pkg) {
    PackageManager pm = context.getPackageManager();
    try {
        Method method_getPackageSizeInfo = pm.getClass().getMethod("getPackageSizeInfo", String.class, IPackageStatsObserver.class);
        method_getPackageSizeInfo.invoke(pm, pkg, new IPackageStatsObserver.Stub() {
            @Override
            public IBinder asBinder() {
                log.d("asBinder");
                return super.asBinder();
            }
            @Override
            public void onGetStatsCompleted(PackageStats packageStats, boolean b) throws RemoteException {
                final StringBuilder sb = new StringBuilder("onGetStatsCompleted\n");
                sb.append("packageName:").append(packageStats.packageName).append("\n");
                sb.append("cacheSize:").append(packageStats.cacheSize).append("\n");
                sb.append("dataSize:").append(packageStats.dataSize).append("\n");
                sb.append("externalDataSize:").append(packageStats.externalDataSize).append("\n");
                log.i(sb.toString());
                mHandler.post(new Runnable() {
                    @Override
                    public void run() {
                        txt_content.setText(sb);
                    }
                });
            }
        });
    } catch (Exception e) {
        e.printStackTrace();
    }
}