我在视频录制应用程序的工作中,我要显示preVIEW当记录按钮用户点击它开始录制,当用户点击停止按钮就停止录音。
我在我的面上视频preVIEW但是当我preSS启动按钮,它与错误MEDIA.RECORDER.START(本机方法)崩溃。 这是我的code,请帮我家伙。
@覆盖
公共无效的onCreate(包savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.activity_main);
surfaceView =(SurfaceView)findViewById(R.id.surface_camera);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(本);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
按钮启动=(按钮)findViewById(R.id.start);
按钮停止=(按钮)findViewById(R.id.stop);
stop.setOnClickListener(新OnClickListener(){
@覆盖
公共无效的onClick(视图v){
// TODO自动生成方法存根
camera.stop preVIEW();
STO precording();
}
});
start.setOnClickListener(新OnClickListener(){
@覆盖
公共无效的onClick(视图v){
// TODO自动生成方法存根
的StartRecording();
}
});
}
@覆盖
公共无效surfaceCreated(SurfaceHolder持有者){
相机= Camera.open();
如果(相机!= NULL){
Camera.Parameters PARAMS = camera.getParameters();
camera.setParameters(PARAMS);
}
其他 {
Toast.makeText(getApplicationContext(),摄像机不可!,Toast.LENGTH_LONG).show();
完();
}
}
@覆盖
公共无效surfaceChanged(SurfaceHolder持有人,INT格式,诠释的宽度,高度INT){
如果(previewRunning){
camera.stop preVIEW();
}
Camera.Parameters p值= camera.getParameters();
名单< Camera.Size>大小= p.getSupported previewSizes();
Camera.Size CS = sizes.get(0);
P.SET previewSize(cs.width,cs.height);
camera.setParameters(对);
尝试 {
camera.set previewDisplay(保持器);
camera.start preVIEW();
previewRunning = TRUE;
}
赶上(IOException异常E){
Log.e(TAG,e.getMessage());
e.printStackTrace();
}
}
私人MediaRecorder mediaRecorder;
私人最终诠释maxDurationInMs = 20000;
私人最终长maxFileSizeInBytes = 500000;
私人最终诠释videoFramesPerSecond = 20;
公共布尔的startRecording(){
尝试 {
camera.unlock();
mediaRecorder =新MediaRecorder();
mediaRecorder.setCamera(照相机);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
mediaRecorder.setMaxDuration(maxDurationInMs);
文件临时文件=新的文件(getCacheDir(),test.mp4);
mediaRecorder.setOutputFile(tempFile.getPath());
mediaRecorder.setVideoFrameRate(videoFramesPerSecond);
mediaRecorder.setVideoSize(surfaceView.getWidth(),surfaceView.getHeight());
mediaRecorder.setAudioEn codeR(MediaRecorder.AudioEn coder.DEFAULT);
mediaRecorder.setVideoEn codeR(MediaRecorder.VideoEn coder.DEFAULT);
mediaRecorder.set previewDisplay(surfaceHolder.getSurface());
mediaRecorder.setMaxFileSize(maxFileSizeInBytes);
mediaRecorder prepare()。
mediaRecorder.start();
返回true;
}赶上(IllegalStateException异常E){
Log.e(TAG,e.getMessage());
e.printStackTrace();
返回false;
}赶上(IOException异常E){
Log.e(TAG,e.getMessage());
e.printStackTrace();
返回false;
}
}
公共无效STO precording(){
mediaRecorder.stop();
camera.lock();
}
@覆盖
公共无效surfaceDestroyed(SurfaceHolder持有者){
camera.stop preVIEW();
previewRunning = FALSE;
camera.release();
}
}
日志是
2月八日至31日:20:11.781:E / MediaRecorder(14519):启动失败:-19
二月8日至31日:20:11.781:D / AndroidRuntime(14519):关闭虚拟机
二月8日至31日:20:11.781:W / dalvikvm(14519):主题ID = 1:螺纹退出与未捕获的异常(组= 0x416c9700)
二月8日至31日:20:11.781:E / AndroidRuntime(14519):致命异常:主要
二月8日至31日:20:11.781:E / AndroidRuntime(14519):java.lang.RuntimeException的:启动失败。
二月8日至31日:20:11.781:E / AndroidRuntime(14519):在android.media.MediaRecorder.start(本机方法)
二月8日至31日:20:11.781:E / AndroidRuntime(14519):在com.example.cameratest.MainActivity.startRecording(MainActivity.java:135)
二月8日至31日:20:11.781:E / AndroidRuntime(14519):在com.example.cameratest.MainActivity $ 2.onClick(MainActivity.java:61)
二月8日至31日:20:11.781:E / AndroidRuntime(14519):在android.view.View.performClick(View.java:4240)
二月8日至31日:20:11.781:E / AndroidRuntime(14519):在android.view.View $ PerformClick.run(View.java:17721)
二月8日至31日:20:11.781:E / AndroidRuntime(14519):在android.os.Handler.handleCallback(Handler.java:730)
二月8日至31日:20:11.781:E / AndroidRuntime(14519):在android.os.Handler.dispatchMessage(Handler.java:92)
二月8日至31日:20:11.781:E / AndroidRuntime(14519):在android.os.Looper.loop(Looper.java:137)
二月8日至31日:20:11.781:E / AndroidRuntime(14519):在android.app.ActivityThread.main(ActivityThread.java:5103)
二月8日至31日:20:11.781:E / AndroidRuntime(14519):在java.lang.reflect.Method.invokeNative(本机方法)
二月8日至31日:20:11.781:E / AndroidRuntime(14519):在java.lang.reflect.Method.invoke(Method.java:525)
二月8日至31日:20:11.781:E / AndroidRuntime(14519):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:737)
二月8日至31日:20:11.781:E / AndroidRuntime(14519):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
二月8日至31日:20:11.781:E / AndroidRuntime(14519):在dalvik.system.NativeStart.main(本机方法)
解决方案
我发现这个解决方案,其工作对我罚款,并解决了这个问题:)
有关2.3+安卓:
只要改变:
mediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));
到
mediaRecorder.setProfile(CamcorderProfile.get(CameraID,CamcorderProfile.QUALITY_HIGH));
I am working on video recording app in which i want to display preview and when user click on record button it start recording and when user click stop button it stop recording.
I got video preview on my surface but when i press start button it crash with error "MEDIA.RECORDER.START(Native MEthod). Here is my code Please help me guys.
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
surfaceView = (SurfaceView) findViewById(R.id.surface_camera);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
Button start =(Button)findViewById(R.id.start);
Button stop =(Button)findViewById(R.id.stop);
stop.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
camera.stopPreview();
stopRecording();
}
});
start.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
startRecording();
}
});
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
camera = Camera.open();
if (camera != null){
Camera.Parameters params = camera.getParameters();
camera.setParameters(params);
}
else {
Toast.makeText(getApplicationContext(), "Camera not available!", Toast.LENGTH_LONG).show();
finish();
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
if (previewRunning){
camera.stopPreview();
}
Camera.Parameters p = camera.getParameters();
List<Camera.Size> sizes = p.getSupportedPreviewSizes();
Camera.Size cs = sizes.get(0);
p.setPreviewSize(cs.width, cs.height);
camera.setParameters(p);
try {
camera.setPreviewDisplay(holder);
camera.startPreview();
previewRunning = true;
}
catch (IOException e) {
Log.e(TAG,e.getMessage());
e.printStackTrace();
}
}
private MediaRecorder mediaRecorder;
private final int maxDurationInMs = 20000;
private final long maxFileSizeInBytes = 500000;
private final int videoFramesPerSecond = 20;
public boolean startRecording(){
try {
camera.unlock();
mediaRecorder = new MediaRecorder();
mediaRecorder.setCamera(camera);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
mediaRecorder.setMaxDuration(maxDurationInMs);
File tempFile = new File(getCacheDir(),"test.mp4");
mediaRecorder.setOutputFile(tempFile.getPath());
mediaRecorder.setVideoFrameRate(videoFramesPerSecond);
mediaRecorder.setVideoSize(surfaceView.getWidth(), surfaceView.getHeight());
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
mediaRecorder.setPreviewDisplay(surfaceHolder.getSurface());
mediaRecorder.setMaxFileSize(maxFileSizeInBytes);
mediaRecorder.prepare();
mediaRecorder.start();
return true;
} catch (IllegalStateException e) {
Log.e(TAG,e.getMessage());
e.printStackTrace();
return false;
} catch (IOException e) {
Log.e(TAG,e.getMessage());
e.printStackTrace();
return false;
}
}
public void stopRecording(){
mediaRecorder.stop();
camera.lock();
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
camera.stopPreview();
previewRunning = false;
camera.release();
}
}
Log is
08-31 02:20:11.781: E/MediaRecorder(14519): start failed: -19
08-31 02:20:11.781: D/AndroidRuntime(14519): Shutting down VM
08-31 02:20:11.781: W/dalvikvm(14519): threadid=1: thread exiting with uncaught exception (group=0x416c9700)
08-31 02:20:11.781: E/AndroidRuntime(14519): FATAL EXCEPTION: main
08-31 02:20:11.781: E/AndroidRuntime(14519): java.lang.RuntimeException: start failed.
08-31 02:20:11.781: E/AndroidRuntime(14519): at android.media.MediaRecorder.start(Native Method)
08-31 02:20:11.781: E/AndroidRuntime(14519): at com.example.cameratest.MainActivity.startRecording(MainActivity.java:135)
08-31 02:20:11.781: E/AndroidRuntime(14519): at com.example.cameratest.MainActivity$2.onClick(MainActivity.java:61)
08-31 02:20:11.781: E/AndroidRuntime(14519): at android.view.View.performClick(View.java:4240)
08-31 02:20:11.781: E/AndroidRuntime(14519): at android.view.View$PerformClick.run(View.java:17721)
08-31 02:20:11.781: E/AndroidRuntime(14519): at android.os.Handler.handleCallback(Handler.java:730)
08-31 02:20:11.781: E/AndroidRuntime(14519): at android.os.Handler.dispatchMessage(Handler.java:92)
08-31 02:20:11.781: E/AndroidRuntime(14519): at android.os.Looper.loop(Looper.java:137)
08-31 02:20:11.781: E/AndroidRuntime(14519): at android.app.ActivityThread.main(ActivityThread.java:5103)
08-31 02:20:11.781: E/AndroidRuntime(14519): at java.lang.reflect.Method.invokeNative(Native Method)
08-31 02:20:11.781: E/AndroidRuntime(14519): at java.lang.reflect.Method.invoke(Method.java:525)
08-31 02:20:11.781: E/AndroidRuntime(14519): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
08-31 02:20:11.781: E/AndroidRuntime(14519): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
08-31 02:20:11.781: E/AndroidRuntime(14519): at dalvik.system.NativeStart.main(Native Method)
解决方案
I Found This solution and its working fine for me and solved this problem :)
for 2.3+ android:
Just change:
mediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));
to:
mediaRecorder.setProfile(CamcorderProfile.get(CameraID,CamcorderProfile.QUALITY_HIGH));