没有权限写在SD卡上

-2

我正在寻找我的代码中的错误，如果某人能帮助我，我会很感激。我试图将图像保存到我的三星Galaxy Tab s2的SD卡s2 ，但无论使用什么代码，我似乎都无法对SD卡进行任何更改。没有权限写在SD卡上

下面的代码段说明尽管清单发生了变化，但我没有权限在SD卡上写入数据。

有没有人有同样的问题或知道这里发生了什么？

（机器人：的minSdkVersion = “19”;机器人：targetSdkVersion = “25”）

CODE：

File filepath = Environment.getExternalStorageDirectory(); 
    File dir = new File(filepath.getAbsolutePath() + "/SaveImage"); 

    MediaStore.Images.Media.insertImage(getContentResolver(), bmp ,"Image.jpg", "IMAGE");

清单：

<manifest 

xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.ma.singhalja.saveimage"> 

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

<application

LOG：

03-28 01:16:54.647 14292-14292/com.ma.singhalja.saveimage E/MediaStore: Failed to insert image 
                    java.lang.SecurityException: Permission Denial: writing com.android.providers.media.MediaProvider uri content://media/external/images/media from pid=14292, uid=10141 requires android.permission.WRITE_EXTERNAL_STORAGE, or grantUriPermission() 
                     at android.os.Parcel.readException(Parcel.java:1620)

来源

2017-03-27 OangUtanKlaus

您是否添加运行时权限？ – Redman

你必须处理运行时允许这一点，看看在这个步骤

拷贝类：

public class PermissionHandler { 


// Run Time Permission List 
     private static final String MNC = "MNC"; 

     // Calendar group. 
     public static final String READ_CALENDAR = Manifest.permission.READ_CALENDAR; 
     public static final String WRITE_CALENDAR = Manifest.permission.WRITE_CALENDAR; 

     // Camera group. 
     public static final String CAMERA = Manifest.permission.CAMERA; 

     // Contacts group. 
     public static final String READ_CONTACTS = Manifest.permission.READ_CONTACTS; 
     public static final String WRITE_CONTACTS = Manifest.permission.WRITE_CONTACTS; 


     // Location group. 
     public static final String ACCESS_FINE_LOCATION = Manifest.permission.ACCESS_FINE_LOCATION; 
     public static final String ACCESS_COARSE_LOCATION = Manifest.permission.ACCESS_COARSE_LOCATION; 

     // Microphone group. 
     public static final String RECORD_AUDIO = Manifest.permission.RECORD_AUDIO; 

     // Phone group. 
     public static final String READ_PHONE_STATE = Manifest.permission.READ_PHONE_STATE; 
     public static final String CALL_PHONE = Manifest.permission.CALL_PHONE; 
     public static final String READ_CALL_LOG = Manifest.permission.READ_CALL_LOG; 
     public static final String WRITE_CALL_LOG = Manifest.permission.WRITE_CALL_LOG; 
     public static final String ADD_VOICEMAIL = Manifest.permission.ADD_VOICEMAIL; 
     public static final String USE_SIP = Manifest.permission.USE_SIP; 
     public static final String PROCESS_OUTGOING_CALLS = Manifest.permission.PROCESS_OUTGOING_CALLS; 

     // Sensors group. 
     public static final String BODY_SENSORS = Manifest.permission.BODY_SENSORS; 
     public static final String USE_FINGERPRINT = Manifest.permission.USE_FINGERPRINT; 

     // SMS group. 
     public static final String SEND_SMS = Manifest.permission.SEND_SMS; 
     public static final String RECEIVE_SMS = Manifest.permission.RECEIVE_SMS; 
     public static final String READ_SMS = Manifest.permission.READ_SMS; 
     public static final String RECEIVE_WAP_PUSH = Manifest.permission.RECEIVE_WAP_PUSH; 
     public static final String RECEIVE_MMS = Manifest.permission.RECEIVE_MMS; 
     public static final String READ_CELL_BROADCASTS = "android.permission.READ_CELL_BROADCASTS"; 

     // Bookmarks group. 
     public static final String READ_HISTORY_BOOKMARKS = "com.android.browser.permission.READ_HISTORY_BOOKMARKS"; 
     public static final String WRITE_HISTORY_BOOKMARKS = "com.android.browser.permission.WRITE_HISTORY_BOOKMARKS"; 


     public static boolean isPermissionGranted(Activity mContext, String Permission, String Text, int PermissionCode) { 

      if (ContextCompat.checkSelfPermission(mContext, Permission) != PackageManager.PERMISSION_GRANTED) { 
       reqPermission(mContext, Text, PermissionCode, Permission); 
       return false; 
      } 

      return true; 
     } 


     public static void reqPermission(Activity mContext, String Text, int PermissionCode, String Permission) { 
      if (!ActivityCompat.shouldShowRequestPermissionRationale(mContext, Permission)) { 
       ActivityCompat.requestPermissions(mContext, new String[]{Permission}, PermissionCode); 
      } else { 
       openAlertDialog(mContext, Text); 
      } 
     } 

     public static void openAlertDialog(final Context mContext, String Text) { 

      new AlertDialog.Builder(mContext) 
        .setTitle("Permission") 
        .setMessage(mContext.getResources().getString(R.string.app_name) + " needs to access " + Text + " Permission for using this features from Setting >> Permissions.") 
        .setPositiveButton("Ok", new DialogInterface.OnClickListener() { 
         public void onClick(DialogInterface dialog, int which) { 
          // Your code 
          String packageName = "you.App.Id"; 
          try { 
           //Open the specific App Info page: 
           Intent intent = new Intent(android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS); 
           intent.setData(Uri.parse("package:" + packageName)); 
           mContext.startActivity(intent); 

          } catch (ActivityNotFoundException e) { 
           //e.printStackTrace(); 
           //Open the generic Apps page: 
           Intent intent = new Intent(android.provider.Settings.ACTION_MANAGE_APPLICATIONS_SETTINGS); 
           mContext.startActivity(intent); 

          } 

         } 
        }) 
        .setNegativeButton("Cancel", new DialogInterface.OnClickListener() { 
         public void onClick(DialogInterface dialog, int which) { 
          // do nothing 
         } 
        }) 
        .show(); 


     } 

    }

之前保存的图像，你需要检查这个

if (PermissionHandler.isPermissionGranted((Activity) mContext, Manifest.permission.WRITE_EXTERNAL_STORAGE, "External Storage", 1000)) { 
         // Save your Image code 
        }

那就是它吧。快乐编码:)

来源

2017-03-27 12:55:12 RushDroid

问题解决。我不知道该怎么感谢你才足够！ :) – OangUtanKlaus

你最欢迎的@OangUtanKlaus兄弟 – RushDroid

添加运行时间封锁离子访问

Add library: 
compile 'pub.devrel:easypermissions:0.2.1' 

private String[] galleryPermissions = {Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE}; 

if (EasyPermissions.hasPermissions(this, galleryPermissions)) { 
     pickImageFromGallery(); 
    } else { 
     EasyPermissions.requestPermissions(this, "Access for storage", 
       101, galleryPermissions); 
    }

来源

2017-03-27 12:39:28

没有权限写在SD卡上

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