我正在开发一个需要录制视频的应用程序
这是我的部分代码
mRecorder = new MediaRecorder();
mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
String mFileName = Environment.getExternalStorageDirectory()
.getAbsolutePath();
mFileName += "/youraudiofile.3gp";
mSurfaceHolder.getSurface();
mRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());
mRecorder.setOutputFile(mFileName);
mRecorder.setVideoSize(320, 240);
mRecorder.setVideoFrameRate(15);
mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mRecorder.setMaxDuration(30000);
try {
mRecorder.prepare();
mRecorder.start();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
上面的代码抛出了 IllegalStateException。我在 AndroidManifest.xml 中输入了所有权限,我非常确定 AndroidManifest.xml 没有任何问题。
我已经阅读了几个解决方案,但都没有工作。我怎么解决这个问题?
下面提供的日志猫
11-09 20:47:39.787: E/AndroidRuntime(29000): 致命异常: main 11-09 20:47:39.787: E/AndroidRuntime(29000): java.lang.IllegalStateException: 无法执行活动的方法 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 android.view.View$1.onClick(View.java:3624) 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 android.view.View.performClick(View.java:4117) 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 android.view.View$PerformClick.run(View.java:17052) 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 android.os.Handler.handleCallback(Handler.java:615) 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 android.os.Handler.dispatchMessage(Handler.java:92) 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 android.os.Looper.loop(Looper.java:137) 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 android.app.ActivityThread.main(ActivityThread.java:4812) 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 java.lang.reflect.Method.invokeNative(Native Method) 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 java.lang.reflect.Method.invoke(Method.java:511) 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789) 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556) 11-09 20:47:39.787: E/AndroidRuntime(29000): at dalvik.system.NativeStart.main(Native Method) 11-09 20:47:39.787:E/AndroidRuntime(29000):由:java.lang.reflect.InvocationTargetException 引起 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 java.lang.reflect.Method.invokeNative(Native Method) 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 java.lang.reflect.Method.invoke(Method.java:511) 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 android.view.View$1.onClick(View.java:3619) 11-09 20:47:39.787: E/AndroidRuntime(29000): ... 11 更多 11-09 20:47:39.787:E/AndroidRuntime(29000):原因:java.lang.RuntimeException:启动失败。 11-09 20:47:39.787:E/AndroidRuntime(29000):在 android.media.MediaRecorder.start(本机方法) 11-09 20:47:39.787: E/AndroidRuntime(29000): 在 com.example.camera2.CameraView.startRecording(CameraView.java:149) 11-09 20:47:39.787: E/AndroidRuntime(29000): ... 14 更多
修改后的代码如下,即使 setOutputFormat(), setVideoSource(), setAudioSource() 出现在 if {} 的正上方, setProfile() 也会抛出 RunTimeException。下面的代码会抛出和之前的日志一样的 IllegalStateException
mRecorder = new MediaRecorder();
mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
String mFileName = Environment.getExternalStorageDirectory()
.getAbsolutePath();
mFileName += "/youraudiofile.3gp";
mRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
} else {
if (! isFrontCamera) {
CamcorderProfile camcorderProfile = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);
mRecorder.setProfile(camcorderProfile);
} else {
CamcorderProfile camcorderProfile = CamcorderProfile.get(findFrontFacingCamera(), CamcorderProfile.QUALITY_LOW);
mRecorder.setProfile(camcorderProfile);
}
mRecorder.setVideoSize(720, 480);
}
mRecorder.setVideoFrameRate(15);
mRecorder.setOutputFile(mFileName);
mRecorder.setMaxDuration(30000);
try {
mRecorder.prepare();
mRecorder.start();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}