Android中的摄像头异常

我在尝试tun照相机意图时遇到以下异常：

10-31 20:49:43.297: ERROR/DatabaseUtils(194): Writing exception to parcel
10-31 20:49:43.297: ERROR/DatabaseUtils(194): java.lang.UnsupportedOperationException: Unknown URI: content://media/external/images/media
10-31 20:49:43.297: ERROR/DatabaseUtils(194):     at com.android.providers.media.MediaProvider.insertInternal(MediaProvider.java:1696)
10-31 20:49:43.297: ERROR/DatabaseUtils(194):     at com.android.providers.media.MediaProvider.insert(MediaProvider.java:1638)
10-31 20:49:43.297: ERROR/DatabaseUtils(194):     at android.content.ContentProvider$Transport.insert(ContentProvider.java:174)
10-31 20:49:43.297: ERROR/DatabaseUtils(194):     at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:146)
10-31 20:49:43.297: ERROR/DatabaseUtils(194):     at android.os.Binder.execTransact(Binder.java:288)
10-31 20:49:43.297: ERROR/DatabaseUtils(194):     at dalvik.system.NativeStart.run(Native Method)
10-31 20:49:43.297: DEBUG/AndroidRuntime(583): Shutting down VM
10-31 20:49:43.308: WARN/dalvikvm(583): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
10-31 20:49:43.337: ERROR/AndroidRuntime(583): FATAL EXCEPTION: main
10-31 20:49:43.337: ERROR/AndroidRuntime(583): java.lang.UnsupportedOperationException: Unknown URI: content://media/external/images/media
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:146)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:114)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at android.content.ContentProviderProxy.insert(ContentProviderNative.java:408)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at android.content.ContentResolver.insert(ContentResolver.java:587)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at org.BJ.Food4All.utils.CameraUtil.TakePicture(CameraUtil.java:46)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at org.BJ.Food4All.Activities.NewRecipe.Instructions.onContextItemSelected(Instructions.java:132)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at android.app.Activity.onMenuItemSelected(Activity.java:2199)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at com.android.internal.policy.impl.PhoneWindow$ContextMenuCallback.onMenuItemSelected(PhoneWindow.java:2744)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:143)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:855)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at com.android.internal.view.menu.MenuDialogHelper.onClick(MenuDialogHelper.java:137)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at com.android.internal.app.AlertController$AlertParams$3.onItemClick(AlertController.java:874)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at android.widget.AdapterView.performItemClick(AdapterView.java:284)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at android.widget.ListView.performItemClick(ListView.java:3382)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at android.widget.AbsListView$PerformClick.run(AbsListView.java:1696)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at android.os.Handler.handleCallback(Handler.java:587)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at android.os.Handler.dispatchMessage(Handler.java:92)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at android.os.Looper.loop(Looper.java:123)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at android.app.ActivityThread.main(ActivityThread.java:4627)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at java.lang.reflect.Method.invokeNative(Native Method)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at java.lang.reflect.Method.invoke(Method.java:521)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
10-31 20:49:43.337: ERROR/AndroidRuntime(583):     at dalvik.system.NativeStart.main(Native Method)

代码是：

public void TakePicture() 
{
    mFileName                   = "LetFindANewName.jpg"; // TODO - update name
    ContentValues contentValues = new ContentValues();

    contentValues.put( MediaStore.Images.Media.TITLE,       mFileName );
    contentValues.put( MediaStore.Images.Media.DESCRIPTION, "Image capture by camera" ); // TODO- update description for recipe name description

    mImageUri = mParentActivity.getContentResolver().insert(
                        MediaStore.Images.Media.EXTERNAL_CONTENT_URI, 
                        contentValues );

    //create new Camera Intent
    Intent intent = new Intent( MediaStore.ACTION_IMAGE_CAPTURE );
    intent.putExtra( MediaStore.EXTRA_OUTPUT,           mImageUri );
    intent.putExtra( MediaStore.EXTRA_VIDEO_QUALITY,    1 );

    try
    {
        mParentActivity.startActivityForResult( intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE );
    }
    catch( Exception e )
    {
        Toast.makeText( mParentActivity.getApplicationContext(),
                        "Error while starting Camera!",
                        Toast.LENGTH_LONG ).show();

        Log.e( mTAG, "Failed to start camera" );
        Log.e( mTAG, e.getMessage(), e );
    }
}

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我敢打赌，在启用XPrivacy时，我遇到了类似的错误，一些权限被阻止。事实证明，所有媒体活动（保存音频、保存屏幕截图）都要经过“下载管理器、下载、媒体存储”包，然后需要“存储”类别（duh）中的

getExternalStorageState

权限

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有趣的是，它还阻止内部（模拟）SD卡（使用MTP）安装在PC上。

它在模拟器中。我发现emulator不支持拍照，但是关于路径——在emulator中——为什么不好呢？在模拟器中设置sd卡。如果您希望支持在emulator中拍照，请使用，或者即使您使用的是带有SD卡的设备，当该设备通过USB连接到PC/Mac时，您也可能会看到此错误，因为某些操作系统安装SD卡使Android无法访问。