Android MediaRecorder运行时异常

Question

这是我的代码。

try {
                    if (mMediaRecorder != null) {
                        try {
                            mMediaRecorder.prepare();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                        // This line throwing exception
                        mMediaRecorder.start();

                        try {
                            if (mCamera != null)
                                mCamera.startSmoothZoom(globalZoomValue);
                        } catch (Exception e1) {
                            e1.printStackTrace();
                        }
                    }
                } catch (Exception e) {
                    // This is thrown if the previous calls are not called with
                    // the
                    // proper order
                    e.printStackTrace();
                }

此代码在其他设备上运行良好，但在三星Galaxy S2上抛出异常。