我正尝试创建一个简单的应用程序,可以从图库应用程序获取图像并将其显示在imageButton上。我正在运行Android 5.0.1的手机上使用API 21进行测试。不幸的是,无论我尝试什么,我都会收到安全错误 - 即使我指定了权限。Android READ_EXTERNAL_STORAGE权限不能正常工作
我为获得检索图像的代码是:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent){
super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
switch(requestCode){
case PICK_IMAGE_REQUEST:
if(resultCode == RESULT_OK && imageReturnedIntent != null && imageReturnedIntent.getData() != null) {
Uri uri = imageReturnedIntent.getData();
try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
// Log.d(TAG, String.valueOf(bitmap));
ImageButton ib = (ImageButton) findViewById(R.id.inputImg);
ib.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
}
break;
}
}
代码的工作,当我尝试选择从Dropbox的图像,但是当我从图库中选择图片,我得到
java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/images/media/35634 from pid=25240, uid=10070 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
我做了使用的许可标签为READ_EXTERNAL_STORAGE舱单的孩子:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="[REDACTED]">
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="23" />
<uses-permission tools:node="replace" android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="18" />
<application>
[REDACTED]
</application>
</manifest>
我已经在其他帖子上进行了高低搜索,但仍似乎无法弄清楚为什么我仍然得到这个令人讨厌的错误。
阅读本文http://stackoverflow.com/questions/21196453/external-storage-permission-issue-with-mediaprovider-ring-tones或http://stackoverflow.com/questions/19837358/android-kitkat- security -ception-when-trying-to-reading-from-mediastore –