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  1. ,
    Expert tip

    Android SDK 23 introduced a new way to handle permissions, so as a temporary workaround you can set it to build for SDK below 23. As a permanent solution you have to ask user during runtime for permissions with checkSelfPermission() or requestPermissions()

  2. ,
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    You need the permission android.permission.READ_EXTERNAL_STORAGE. Write <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> on the Android Manifest

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java.lang.SecurityException: Permission Denial: opening provider com.android.gallery3d.provider.GalleryProvider from ProcessRecord{43bf86e8 21926:com.example.picasatest/u0a156} (pid=21926, uid=10156) requires com.google.android.gallery3d.permission.GALLERY_PROVIDER or com.google.android.gallery3d.permission.GALLERY_PROVIDER	at android.os.Parcel.readException(Parcel.java:1465)	at android.os.Parcel.readException(Parcel.java:1419)	at android.app.ActivityManagerProxy.getContentProvider(ActivityManagerNative.java:2848)	at android.app.ActivityThread.acquireProvider(ActivityThread.java:4399)	at android.app.ContextImpl$ApplicationContentResolver.acquireUnstableProvider(ContextImpl.java:2200)	at android.content.ContentResolver.acquireUnstableProvider(ContentResolver.java:1425)	at android.content.ContentResolver.openTypedAssetFileDescriptor(ContentResolver.java:1047)	at android.content.ContentResolver.openAssetFileDescriptor(ContentResolver.java:904)	at android.content.ContentResolver.openInputStream(ContentResolver.java:629)	at com.example.picasatest.android.lib.util.ImageUtil.resizeToFileFromOtherProvider(ImageUtil.java:129)	at com.example.picasatest.android.lib.util.ImageUtil.resizeToFile(ImageUtil.java:57)	at com.example.picasatest.util.ImageResizeTask.doInBackground(ImageResizeTask.java:53)	at com.example.picasatest.util.ImageResizeTask.doInBackground(ImageResizeTask.java:14)	at android.os.AsyncTask$2.call(AsyncTask.java:288)	at java.util.concurrent.FutureTask.run(FutureTask.java:237)	at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)	at java.lang.Thread.run(Thread.java:841)