Android使用相机拍照报错：java.lang.UnsupportedOperationException: Unknown URI: content://media/external/images/media

问题解决

使用如下的代码开启相机拍照：

Uri mCaptureUri = getActivity().getContentResolver()
    .insert(Media.EXTERNAL_CONTENT_URI, new ContentValues());
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, mCaptureUri);
getActivity().startActivityForResult(intent, REQUEST_CAPTURE);

报错：

01-29 12:37:49.635: E/Parcel(24434): Reading a NULL string not supported here.
01-29 12:38:01.578: E/AndroidRuntime(24434): FATAL EXCEPTION: main
01-29 12:38:01.578: E/AndroidRuntime(24434): java.lang.UnsupportedOperationException: Unknown URI: content://media/external/images/media
01-29 12:38:01.578: E/AndroidRuntime(24434):    at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:169)
01-29 12:38:01.578: E/AndroidRuntime(24434):    at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:137)
01-29 12:38:01.578: E/AndroidRuntime(24434):    at android.content.ContentProviderProxy.insert(ContentProviderNative.java:420)
01-29 12:38:01.578: E/AndroidRuntime(24434):    at android.content.ContentResolver.insert(ContentResolver.java:866)

部分机型会导致Crash，部分机型不会Crash但是返回的Uri是null

搜索Stack Overflow之后得到解决办法(实际上是换一种实现方式):
The way you set the output file is fishy.
Try like this:

public void startCamera() throws IOException {
  Log.d("TDM_CAMERA", "Starting camera on the phone...");
  File photosDir = new File(Environment.getExternalStorageDirectory(), "photos");
  if (!photosDir.isDirectory()) {
      photosDir.mkdirs();
  }
  File imageFile = File.createTempFile("testphoto", ".jpg", photosDir);
  Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
  intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(imageFile));
  intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
  startActivityForResult(intent, 1337);
}

Also make sure that using external storage is declared in your Android manifest:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

For more info see this page in the docs: http://developer.android.com/training/camera/photobasics.html