Der Vorschau -Callback von Android KitKat (4.x.x) muss SurfaceHolder wünschen? ⇐ Android

[Anonymous]

Ich habe eine Frage. Und es verwendet keinen Oberflächeninhaber. not called

PreviewCallback and PreviewCallback with buffer are not called

Android Camera PreviewCallback not called in 4.1



Anyone help?



Hier ist mein Code < /p>

Code: Select all

@Override
public void startPreview(String cameraId, int width, int height, int fps) {
this.CameraId = cameraId;
this.Width = width;
this.Height = height;
this.Fps = fps * 1000;

this.CameraId = Integer.parseInt(cameraId);

prepareCamera();

if (this.RenderMethod == MyProject.RENDER_METHOD_NATIVE_SURFACE_TEXTURE) {
MySurfaceRenderer.setSize(this.width, this.height);
}

startBackgroundThread();
openCamera();
}
< /code>

Und dies ist meine Rückrufmethode: < /p>

private Camera.PreviewCallback myCallBack = new Camera.PreviewCallback() {
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
Log.i(TAG, "onPreviewFrame data=" + data);

JNIs.setFrameData(data);
camera.addCallbackBuffer(this.PreviewData);
}
};
< /code>

Und dies ist meine openCamera -Methode: < /p>

private void openCamera() {
if (this.Camera == null) {
this.Camera = Camera.open(this.CameraId);
}

SurfaceTexture tex = MySurfaceRenderer.getSurfaceTexture();
if (tex != null) {
try {
this.Camera.setPreviewTexture(tex);
} catch (Exception e) {
e.printStackTrace();
}
}

this.Data = new byte[this.width * this.height * 12 / 8];

this.Params = this.Camera.getParameters();
this.Params.setPreviewSize(this.width, this.height);

// focus
set_Focus(this.Params);

// exposure
set_Exposure(this.Params);

this.Camera.setParameters(this.Params);
this.Camera.setPreviewCallbackWithBuffer(myCallBack);
this.Camera.startPreview();
this.Camera.addCallbackBuffer(this.PreviewData);
}