READ_EXTERNAL_STORAGE權限清單中，但仍然無法正常工作

-2

在AndroidManifest.xml我：READ_EXTERNAL_STORAGE權限清單中，但仍然無法正常工作

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> 
<uses-sdk 
     android:minSdkVersion="16" 
     android:targetSdkVersion="23" />

在的build.gradle我：

android { 
    compileSdkVersion 23 
    buildToolsVersion "23.0.1" 

    defaultConfig { 
     multiDexEnabled true 
     applicationId "test" 
     minSdkVersion 16 
     targetSdkVersion 23

如果我嘗試調用CameraRoll.getPhotos()得到庫照片我得到的錯誤：

Could not get photos: need READ_EXTERNAL_STORAGE permission 
    at createErrorFromErrorData

我想在Android 6和7的真實設備上運行應用程序它，並且我試圖使它像IOS一樣工作 - 當調用getPhotos（）來查看權限請求對話框時。
這裏有什麼問題？

來源

2017-07-31 1110

加載運行許可，在Android 6.0（API級別23）開始，用戶授予權限的應用程序，而該應用程序正在運行，而不是在他們安裝應用程序時。 [https://developer.android.com/training/permissions/requesting.html] –

[Android棉花糖請求權限？]（https://stackoverflow.com/questions/33666071/android-棉花糖請求權限） –

嗨你發現這個問題的解決方案，請按照此鏈接https://stackoverflow.com/questions/39866869/how-to-ask-permission-to-access-gallery-on-android-m/39866945＃39866945 –

要申請任何權限，您可以使用下面的代碼並添加您需要的權限。這是你如何通過訪問相關許可

public boolean isStoragePermissionGranted() { 
if (Build.VERSION.SDK_INT >= 23) { 

    if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE) 
      == PackageManager.PERMISSION_GRANTED) { 
     Log.v(TAG,"Permission is granted"); 
     return true; 
    } else { 

     Log.v(TAG,"Permission is revoked"); 
     ActivityCompat.requestPermissions(this, new String[]{ Manifest.permission.READ_EXTERNAL_STORAGE}, 1); 
     return false; 
    } 
} 
else { //permission is automatically granted on sdk<23 upon installation 
    Log.v(TAG,"Permission is granted"); 
    return true; 
} 
}

任何數據之前，要求他們處理運行時權限，一旦你這樣做，對於API的設備> = 23你會在運行時得到彈出，然後一旦用戶接受許可或拒絕它，你的onRequestPermissionsResult方法被調用。所以在這裏你將不得不處理你的檢查是否用戶授予應用程序的權限。如果是的話，你可以用你的邏輯繼續

@Override 
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) { 
    switch (requestCode) { 
     case 0: 
      boolean isPerpermissionForAllGranted = false; 
      if (grantResults.length > 0 && permissions.length==grantResults.length) { 
       for (int i = 0; i < permissions.length; i++){ 
        if (grantResults[i] == PackageManager.PERMISSION_GRANTED){ 
         isPerpermissionForAllGranted=true; 
        }else{ 
         isPerpermissionForAllGranted=false; 
        } 
       } 

       Log.e("value", "Permission Granted"); 
      } else { 
       isPerpermissionForAllGranted=true; 
       Log.e("value", "Permission Denied"); 
      } 
      if(isPerpermissionForAllGranted){ 
       // do your stuff here 
      } 
      break; 
    } 
}

更新1的反應原住民

String[] perms = { 
    "android.permission.READ_EXTERNAL_STORAGE", 
    "android.permission.WRITE_EXTERNAL_STORAGE" 
}; 



@Override 
public void onCreate (Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    // Checking permissions on init 
    checkPerms(); 
} 


public void checkPerms() { 
    // Checking if device version > 22 and we need to use new permission model 
    if(Build.VERSION.SDK_INT>Build.VERSION_CODES.LOLLIPOP_MR1) { 
     // Checking if we can draw window overlay 
     if (!Settings.canDrawOverlays(this)) { 
      // Requesting permission for window overlay(needed for all react-native apps) 
      Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, 
       Uri.parse("package:" + getPackageName())); 
      startActivityForResult(intent, OVERLAY_PERMISSION_REQ_CODE); 
     } 
     for(String perm : perms){ 
      // Checking each persmission and if denied then requesting permissions 
      if(checkSelfPermission(perm) == PackageManager.PERMISSION_DENIED){ 
       requestPermissions(perms, PERMISSION_REQ_CODE); 
       break; 
      } 
     } 
    } 
} 

// Window overlay permission intent result 
@Override 
public void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 
    if (requestCode == OVERLAY_PERMISSION_REQ_CODE) { 
     checkPerms(); 
    } 
} 

// Permission results 
@Override 
public void onRequestPermissionsResult(int permsRequestCode, String[] permissions, int[] grantResults){ 
    switch(permsRequestCode){ 
     case PERMISSION_REQ_CODE: 
      // example how to get result of permissions requests (there can be more then one permission dialog) 
      // boolean readAccepted = grantResults[0]==PackageManager.PERMISSION_GRANTED; 
      // boolean writeAccepted = grantResults[1]==PackageManager.PERMISSION_GRANTED; 
      // checking permissions to prevent situation when user denied some permission 
      checkPerms(); 
      break; 

    } 
}

來源

2017-07-31 11:53:56

Add This code to your Activity on create  

     if (ContextCompat.checkSelfPermission(UserActivity.this, 
         Manifest.permission.READ_EXTERNAL_STORAGE) 
         != PackageManager.PERMISSION_GRANTED) { 
        if (ActivityCompat.shouldShowRequestPermissionRationale(UserActivity.this, 
          Manifest.permission.READ_EXTERNAL_STORAGE)) { 

        } else { 
         ActivityCompat.requestPermissions(UserActivity.this, 
           new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 
           a); 
        } 
       }

來源

2017-07-31 11:57:28 jojo

READ_EXTERNAL_STORAGE權限清單中，但仍然無法正常工作

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