当我调用Camera.Parameters.flatten（）时，我从最近显示StringIndexOutOfBoundsException的用户那里得到了一些非常奇怪的错误报告。
我想我所拥有的params对象可能是null，我在调用flatten之前不检查它，但我本来期望NPE。
还有其他人见过类似的东西吗？我没有收到用户的反馈，无论是一次还是每次，我都开始怀疑这对于运行2.2的DroidX有多普遍。
EXTRA INFO:
Error setting cam params. Current op was:
Setting camera orientation
Op trace: Starting op: Setting camera orientation
App Version: Version 1.02 - build 31
------------------------------------------------
DEVICE INFO:
Device: cdma_shadow
Manufacturer: motorola
Model: DROIDX
OS Version release: 2.2
------------------------------------------------
STACK TRACE
mobi.sense8.android.util.camera.CameraHelperException
at java.lang.AbstractStringBuilder.deleteCharAt0(AbstractStringBuilder.java:257)
at java.lang.StringBuilder.deleteCharAt(StringBuilder.java:360)
at android.hardware.Camera$Parameters.flatten(Camera.java:945)
at mobi.sense8.android.util.camera.CameraHelper.setOrientation(CameraHelper.java:120)
at mobi.sense8.android.iSnipeYou.iSnipeYou.initCameraNew(iSnipeYou.java:650)
at mobi.sense8.android.iSnipeYou.iSnipeYou.surfaceChanged(iSnipeYou.java:630)
at android.view.SurfaceView.updateWindow(SurfaceView.java:538)
at android.view.SurfaceView.onWindowVisibilityChanged(SurfaceView.java:206)
at android.view.View.dispatchWindowVisibilityChanged(View.java:3891)
at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:719)
at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:719)
at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:719)
at android.view.ViewRoot.performTraversals(ViewRoot.java:753)
at android.view.ViewRoot.handleMessage(ViewRoot.java:1736)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:143)
at android.app.ActivityThread.main(ActivityThread.java:4701)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: -1
... 22 more