ContentProvier使用时： Permission Denial:that is not exported from uid XXX解决办法

错误Log:

06-16 02:55:12.577: E/AndroidRuntime(26914): FATAL EXCEPTION: main
06-16 02:55:12.577: E/AndroidRuntime(26914): Process: com.example.contentresolverdemo, PID: 26914
06-16 02:55:12.577: E/AndroidRuntime(26914): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.contentresolverdemo/com.example.contentresolverdemo.MainActivity}: java.lang.SecurityException: Permission Denial: opening provider com.example.datasaveloaddemo.MyDataProvider from ProcessRecord{b32aee28 26914:com.example.contentresolverdemo/u0a56} (pid=26914, uid=10056) that is not exported from uid 10054
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.ActivityThread.access$800(ActivityThread.java:135)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.os.Handler.dispatchMessage(Handler.java:102)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.os.Looper.loop(Looper.java:136)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.ActivityThread.main06-16 02:55:12.577: E/AndroidRuntime(26914): FATAL EXCEPTION: main
06-16 02:55:12.577: E/AndroidRuntime(26914): Process: com.example.contentresolverdemo, PID: 26914
06-16 02:55:12.577: E/AndroidRuntime(26914): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.contentresolverdemo/com.example.contentresolverdemo.MainActivity}: java.lang.SecurityException: Permission Denial: opening provider com.example.datasaveloaddemo.MyDataProvider from ProcessRecord{b32aee28 26914:com.example.contentresolverdemo/u0a56} (pid=26914, uid=10056) that is not exported from uid 10054
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.ActivityThread.access$800(ActivityThread.java:135)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.os.Handler.dispatchMessage(Handler.java:102)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.os.Looper.loop(Looper.java:136)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.ActivityThread.main(ActivityThread.java:5017)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at java.lang.reflect.Method.invokeNative(Native Method)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at java.lang.reflect.Method.invoke(Method.java:515)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at dalvik.system.NativeStart.main(Native Method)
06-16 02:55:12.577: E/AndroidRuntime(26914): Caused by: java.lang.SecurityException: Permission Denial: opening provider com.example.datasaveloaddemo.MyDataProvider from ProcessRecord{b32aee28 26914:com.example.contentresolverdemo/u0a56} (pid=26914, uid=10056) that is not exported from uid 10054
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.os.Parcel.readException(Parcel.java:1465)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.os.Parcel.readException(Parcel.java:1419)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.ActivityManagerProxy.getContentProvider(ActivityManagerNative.java:2848)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.ActivityThread.acquireProvider(ActivityThread.java:4415)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.ContextImpl$ApplicationContentResolver.acquireUnstableProvider(ContextImpl.java:2207)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.content.ContentResolver.acquireUnstableProvider(ContentResolver.java:1425)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.content.ContentResolver.query(ContentResolver.java:445)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.content.ContentResolver.query(ContentResolver.java:404)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at com.example.contentresolverdemo.MainActivity.onCreate(MainActivity.java:24)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.Activity.performCreate(Activity.java:5231)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
06-16 02:55:12.577: E/AndroidRuntime(26914): 	... 11 more

解决办法：

修改前：AndroidManifest.xml

<provider
android:name="com.example.datasaveloaddemo.MyDataProvider"
android:authorities="com.etc.myprovider">
</provider>

修改后：AndroidManifest.xml

<provider
android:name="com.example.datasaveloaddemo.MyDataProvider"
android:authorities="com.etc.myprovider"
android:exported="true" >
</provider>