快速解決安卓7.0系統寫入SD卡權限失敗的問題

2019-10-21 21:43:58

字體：大中小

來源：轉載

供稿：網友

如圖所示，在mainfest文件中聲明了SD卡的讀和寫權限，仍舊報錯：

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

安卓7.0,SD卡,權限

安卓23.0版本以上，不僅僅要設置上面的權限，還要在對SD卡有讀寫操作的地方授權，下面是公共類：

import android.Manifest;import android.app.Activity;import android.content.pm.PackageManager;import android.support.v4.app.ActivityCompat;public class PermisionUtils { // Storage Permissions private static final int REQUEST_EXTERNAL_STORAGE = 1; private static String[] PERMISSIONS_STORAGE = {  Manifest.permission.READ_EXTERNAL_STORAGE,  Manifest.permission.WRITE_EXTERNAL_STORAGE}; /** * Checks if the app has permission to write to device storage * If the app does not has permission then the user will be prompted to * grant permissions * * @param activity */ public static void verifyStoragePermissions(Activity activity) { // Check if we have write permission int permission = ActivityCompat.checkSelfPermission(activity,  Manifest.permission.WRITE_EXTERNAL_STORAGE); if (permission != PackageManager.PERMISSION_GRANTED) {  // We don't have permission so prompt the user  ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE,   REQUEST_EXTERNAL_STORAGE); } }}

然后直接在需要授權的地方調用：