android7.0 设置SD卡为默认存储时候的一些问题

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报错信息如下：

FATAL EXCEPTION: main                                                 Process: com.android.bluetooth, PID: 6332                                                 android.os.FileUriExposedException: file:///storage/0403-0201/bluetooth/2017-01-06.txt exposed beyond app through Intent.getData()                                                     at android.os.StrictMode.onFileUriExposed(StrictMode.java:1814)                                                     at android.net.Uri.checkFileUriExposed(Uri.java:2346)                                                     at android.content.Intent.prepareToLeaveProcess(Intent.java:8940)                                                     at android.content.Intent.prepareToLeaveProcess(Intent.java:8901)                                                     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1517)                                                     at android.app.Activity.startActivityForResult(Activity.java:4226)                                                     at android.app.Activity.startActivityForResult(Activity.java:4185)                                                     at android.app.Activity.startActivity(Activity.java:4509)                                                     at android.app.Activity.startActivity(Activity.java:4477)                                                     at com.android.bluetooth.opp.BluetoothOppUtility.openReceivedFile(BluetoothOppUtility.java:265)                                                     at com.android.bluetooth.opp.BluetoothOppTransferHistory.openCompleteTransfer(BluetoothOppTransferHistory.java:383)                                                     at com.android.bluetooth.opp.BluetoothOppTransferHistory.onItemClick(BluetoothOppTransferHistory.java:361)                                                     at android.widget.AdapterView.performItemClick(AdapterView.java:315)                                                     at android.widget.AbsListView.performItemClick(AbsListView.java:1204)                                                     at android.widget.AbsListView$PerformClick.run(AbsListView.java:3321)                                                     at android.widget.AbsListView$4.run(AbsListView.java:4382)                                                     at android.os.Handler.handleCallback(Handler.java:836)                                                     at android.os.Handler.dispatchMessage(Handler.java:103)                                                     at android.os.Looper.loop(Looper.java:203)                                                     at android.app.ActivityThread.main(ActivityThread.java:6251)                                                     at java.lang.reflect.Method.invoke(Native Method)                                                     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1063)                                                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:924)

StrictMode模式报错了

就是路径有问题，我这边是蓝牙模块报错了在/packages/apps/Bluetooth/res/xml/file_paths.xml

添加一行 <root-path name="bluetooth"path="" /> 就可以了。

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