Android中的相机异常答案

【问题标题】：Camera exception in AndroidAndroid中的相机异常
【发布时间】：2011-10-31 20:57:08
【问题描述】：

尝试调整相机意图时出现以下异常：

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 );
    }
}

【问题讨论】：

标签： android exception camera

【解决方案1】：

我赌你forgot to insert the SD card

【讨论】：

它在模拟器中。我发现模拟器不支持拍照，但是关于路径——在模拟器中——为什么不好呢？
Read this to know how to 在模拟器中设置 SD 卡。如果要支持在模拟器中拍照，请使用this或this
即使您使用的是具有 SD 卡的设备，当设备通过 USB 连接到 PC/Mac 时，您也可能会看到此错误，因为某些操作系统会安装 SD 卡，使其无法用于 Android。

【解决方案2】：

我在启用 XPrivacy 时遇到了类似的错误，并且某些权限被阻止。事实证明，所有媒体活动（保存音频、保存屏幕截图）都通过“下载管理器、下载、媒体存储”包，然后需要“存储”类别中的getExternalStorageState 权限（duh）。

有趣的是，它还会阻止将内部（模拟）SD 卡安装在 PC 上（使用 MTP）。

【讨论】：