拒绝权限：阅读com.android.providers.media.MediaProvider uri content：// media / external / images / media / 38

Question

我在manifest.xml中添加了权限

但是我仍然有同样的错误：

拒绝权限：阅读com.android.providers.media.MediaProvider

请帮帮我。

我的java课

     package com.example.maymaa.mytest;
      +import..

   public class Image extends AppCompatActivity {
   private static final int PICK_IMAGE =100;
   Uri imageUri;
   ImageView imageview1;
   Button button;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_image);
   imageview1=(ImageView)findViewById(R.id.imageview1);
   button=(Button)findViewById(R.id.btphoto);
    assert button != null;
    button.setOnClickListener(new View.OnClickListener(){


        @Override
        public void onClick(View v) {
         openGallery();

        }}
    );}
 private void openGallery()

{


   Intent gallery= new Intent    
  (Intent.ACTION_PICK,MediaStore.Images.Media.INTERNAL_CONTENT_URI);


    startActivityForResult(gallery, PICK_IMAGE);
}

  @Override
  protected  void onActivityResult
          (int requestcode,int resultcode,Inten  data)       
{

  super.onActivityResult(requestcode,resultcode,data);

      if(resultcode == RESULT_OK && requestcode==PICK_IMAGE){
          imageUri =data.getData();
          imageview1.setImageURI(imageUri);
  }

   }

  }

我的活动

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:padding="10dp"
android:weightSum="1">

<ImageView
    android:layout_width="361dp"
    android:layout_height="255dp"
    android:id="@+id/imageview1"
    android:layout_weight="0.14" />

<Button
    android:layout_width="180dp"
    android:layout_height="wrap_content"
    android:text="Choisir"
    android:layout_gravity="center_horizontal"
    android:onClick="btnclick"
    android:id="@+id/btphoto"
    />


</LinearLayout>

我的代码无法正常工作，谢谢

Answer 1

在清单文件中添加外部读/写权限

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

Answer 2

尝试此操作，将这段代码放在setContentView之后的onCreate中，然后将onCreate的其余代码放在else部分中：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {

        int hasWritePermission = checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE);
        int hasReadPermission = checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE);

        List<String> permissions = new ArrayList<String>();
        if (hasWritePermission != PackageManager.PERMISSION_GRANTED) {
            permissions.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
        } else {
            preferencesUtility.setString("storage", "true");
        }

        if (hasReadPermission != PackageManager.PERMISSION_GRANTED) {
            permissions.add(Manifest.permission.READ_EXTERNAL_STORAGE);

        } else {
            preferencesUtility.setString("storage", "true");
        }

        if (!permissions.isEmpty()) {
            requestPermissions(permissions.toArray(new String[permissions.size()]), REQUEST_CODE_SOME_FEATURES_PERMISSIONS);
        }
    }

在onCreate外面写：

@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    switch (requestCode) {
        case REQUEST_CODE_SOME_FEATURES_PERMISSIONS: {
            for (int i = 0; i < permissions.length; i++) {
                if (grantResults[i] == PackageManager.PERMISSION_GRANTED) {
                    System.out.println("Permissions --> " + "Permission Granted: " + permissions[i]);
                } else if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
                    System.out.println("Permissions --> " + "Permission Denied: " + permissions[i]);
                }
            }
        }
        break;
        default: {
            super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        }
    }
}

Answer 3

我也有同样的问题，在manifext.xml中提供了如下所示的权限

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

谢谢克里希