4-3-3章节红米Note4用Andriod6.0版本，无法运行。目标SDK26

来源：3-2 新建项目与数据库配置

慕侠1003787

2018-03-18

java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.support.v4.content.ModernAsyncTask$3.done(ModernAsyncTask.java:161)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
Caused by: java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/images/media from pid=438, uid=10254 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
at android.os.Parcel.readException(Parcel.java:1599)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:188)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:140)
at android.content.ContentProviderProxy.query(ContentProviderNative.java:421)
at android.content.ContentResolver.query(ContentResolver.java:498)
at android.support.v4.content.ContentResolverCompatJellybean.query(ContentResolverCompatJellybean.java:31)
at android.support.v4.content.ContentResolverCompat$ContentResolverCompatImplJB.query(ContentResolverCompat.java:57)
at android.support.v4.content.ContentResolverCompat.query(ContentResolverCompat.java:125)
at android.support.v4.content.CursorLoader.loadInBackground(CursorLoader.java:59)
at android.support.v4.content.CursorLoader.loadInBackground(CursorLoader.java:37)
at android.support.v4.content.AsyncTaskLoader.onLoadInBackground(AsyncTaskLoader.java:299)
at android.support.v4.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:57)
at android.support.v4.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:45)
at android.support.v4.content.ModernAsyncTask$2.call(ModernAsyncTask.java:138)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
... 3 more