java.lang.SecurityException：Permission Denial：在Android中读取com.android.providers.media.MediaProvider同时

概述我正在尝试从图库中选择图像,但是我的应用程序除了“出错了”消息之外.我以为我正确设置了androidWRITE_EXTERNAL_STORAGE和READ_EXTERNAL_STORAGE权限,但我一直收到错误我应该怎么做让它工作？这是我的Logcat错误06-0712:07:27.5671692-1711/?E/DatabaseUtils﹕Writingex

我正在尝试从图库中选择图像,但是我的应用程序除了“出错了”消息之外.我以为我正确设置了android WRITE_EXTERNAL_STORAGE和READ_EXTERNAL_STORAGE权限,但我一直收到错误我应该怎么做让它工作？

这是我的Log cat错误

06-07 12:07:27.567    1692-1711/? E/DatabaseUtils﹕ Writing exception to parcel    java.lang.SecurityException: Permission Denial: reading com.androID.provIDers.media.MediaProvIDer uri content://media/external/images/media/359 from pID=2818, uID=10057 requires androID.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()            at androID.content.ContentProvIDer.enforceReadPermissionInner(ContentProvIDer.java:605)            at androID.content.ContentProvIDer$Transport.enforceReadPermission(ContentProvIDer.java:480)            at androID.content.ContentProvIDer$Transport.query(ContentProvIDer.java:211)            at androID.content.ContentProvIDerNative.onTransact(ContentProvIDerNative.java:112)            at androID.os.Binder.execTransact(Binder.java:453)

这是我的活动代码

public class MainActivity extends Activity {    private static int RESulT_LOAD_img = 1;    String imgDecodableString;    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.activity_main);    }    public voID loadImagefromgallery(VIEw vIEw) {        // Create intent to Open Image applications like gallery, Google Photos        Intent galleryIntent = new Intent(Intent.ACTION_PICK,                androID.provIDer.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);        // Start the Intent        startActivityForResult(galleryIntent, RESulT_LOAD_img);    }    @OverrIDe    protected voID onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        try {            // When an Image is picked            if (requestCode == RESulT_LOAD_img && resultCode == RESulT_OK                    && null != data) {                // Get the Image from data                Uri selectedImage = data.getData();                String[] filePathColumn = { MediaStore.Images.Media.DATA };                // Get the cursor                Cursor cursor = getContentResolver().query(selectedImage,                        filePathColumn, null, null, null);                // Move to first row                cursor.movetoFirst();                int columnIndex = cursor.getColumnIndex(filePathColumn[0]);                imgDecodableString = cursor.getString(columnIndex);                cursor.close();                ImageVIEw imgVIEw = (ImageVIEw) findVIEwByID(R.ID.imgVIEw);                // Set the Image in ImageVIEw after deCoding the String                imgVIEw.setimageBitmap(BitmapFactory                        .decodefile(imgDecodableString));            } else {                Toast.makeText(this, "You haven't picked Image",                        Toast.LENGTH_LONG).show();            }        } catch (Exception e) {            Toast.makeText(this, "Something went wrong", Toast.LENGTH_LONG)                    .show();        }    }}

这是我的Menifest.xml文件代码

<?xml version="1.0" enCoding="utf-8"?><manifest xmlns:androID="http://schemas.androID.com/apk/res/androID"    package="com.example.tazeen.image_fromgallery" >    <uses-permission androID:name="androID.permission.WRITE_EXTERNAL_STORAGE" />    <uses-permission androID:name="androID.permission.READ_EXTERNAL_STORAGE" />    <application        androID:allowBackup="true"        androID:icon="@mipmap/ic_launcher"        androID:label="@string/app_name"        androID:theme="@style/Apptheme" >        <activity            androID:name=".MainActivity"            androID:label="@string/app_name" >            <intent-filter>                <action androID:name="androID.intent.action.MAIN" />                <category androID:name="androID.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>

解决方法:

要检查API级别23及更高级别的手动权限,请使用此代码.

public static final int MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE = 123;public boolean checkPermissionREAD_EXTERNAL_STORAGE(            final Context context) {        int currentAPIVersion = Build.VERSION.SDK_INT;        if (currentAPIVersion >= androID.os.Build.VERSION_CODES.M) {            if (ContextCompat.checkSelfPermission(context,                    Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {                if (ActivityCompat.shouldShowRequestPermissionRationale(                        (Activity) context,                        Manifest.permission.READ_EXTERNAL_STORAGE)) {                    showDialog("External storage", context,                            Manifest.permission.READ_EXTERNAL_STORAGE);                } else {                    ActivityCompat                            .requestPermissions(                                    (Activity) context,                                    new String[] { Manifest.permission.READ_EXTERNAL_STORAGE },                                    MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);                }                return false;            } else {                return true;            }        } else {            return true;        }    }

的ShowDialog()

public voID showDialog(final String msg, final Context context,            final String permission) {        AlertDialog.Builder alertBuilder = new AlertDialog.Builder(context);        alertBuilder.setCancelable(true);        alertBuilder.setTitle("Permission necessary");        alertBuilder.setMessage(msg + " permission is necessary");        alertBuilder.setPositivebutton(androID.R.string.yes,                new DialogInterface.OnClickListener() {                    public voID onClick(DialogInterface dialog, int which) {                        ActivityCompat.requestPermissions((Activity) context,                                new String[] { permission },                                MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);                    }                });        AlertDialog alert = alertBuilder.create();        alert.show();    }

在你的活动检查这样.

if (checkPermissionREAD_EXTERNAL_STORAGE(this)) {            // do your stuff..        }

并且不要忘记添加onRequestPermissionsResult.

@OverrIDe    public voID onRequestPermissionsResult(int requestCode,            String[] permissions, int[] grantResults) {        switch (requestCode) {        case MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE:            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {                // do your stuff            } else {                Toast.makeText(Login.this, "GET_ACCOUNTS DenIEd",                        Toast.LENGTH_SHORT).show();            }            break;        default:            super.onRequestPermissionsResult(requestCode, permissions,                    grantResults);        }    }

快乐编码..

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