在Galaxy S5上出现FOCUS_MODE_CONTINUOUS_PICTURE的问题 [英] Trouble with FOCUS_MODE_CONTINUOUS_PICTURE on Galaxy S5
问题描述
我正在使用一个Android应用程序,该应用程序使用相机预览和拍照.我在银河S4上使用了FOCUS_MODE_CONTINUOUS_PICTURE
,发现聚焦效果很好.
I'm working on an Android app that uses the camera to preview and take pictures. I use FOCUS_MODE_CONTINUOUS_PICTURE
with the galaxy S4 and find that the focusing works very well.
但是,在星系S5上,FOCUS_MODE_CONTINUOUS_PICTURE
很少能正确找到焦点.相机将放大对焦,但随后反复缩小对焦.
However, on the galaxy S5 the FOCUS_MODE_CONTINUOUS_PICTURE
rarely ever finds the focus properly. The camera will zoom into focus, but then zoom back out of focus repeatedly.
有人知道为什么FOCUS_MODE_CONTINUOUS_PICTURE
在S5上表现这么差吗,还是有人可以确认他们是否有相同的问题?
Does anyone have an idea of why the FOCUS_MODE_CONTINUOUS_PICTURE
works so poorly on the S5, or can anyone confirm whether or not they have the same issue?
推荐答案
我也遇到了这些相同的问题.
I too have experienced these same issues.
在连续图片对焦模式下,Galaxy S5和其他设备似乎没有可靠的行为.当开发人员可以在大多数设备上完美地运行代码时,这对于开发人员来说非常令人沮丧,但是随之而来的是S5(一种非常受欢迎的设备),我们看起来很糟糕.
The Galaxy S5, and possibly other devices, don't seem to have reliable behavior in continuous picture focus mode. This is very frustrating as a developer, when code works perfectly on most devices, but then along comes the S5 (a very popular device) and we look pretty bad.
经过大量的头部抓挠之后,我认为我有一个很好的解决方案(更多的替代方法).
After much head scratching, I think I have a solution (more of a workaround) that is working well.
- 将相机设置为FOCUS_MODE_CONTINUOUS_PICTURE
- 在手势处理程序中拍照(例如,点击按钮,触摸事件),将相机切换到FOCUS_MODE_AUTO,然后以延迟的方式调用Camera.autoFocus()
这在照片预览期间提供了不错的连续聚焦UI,但是在可靠的自动聚焦模式下拍摄了照片.
this provides the nice continuous focus UI during photo preview, but takes the picture in reliable auto-focus mode.
这是代码:
protected void onTakePicture()
{
// mCamera is the Camera object
// mAutoFocusCallback is a Camera.AutoFocusCallback handler
try
{
// determine current focus mode
Camera.Parameters params = mCamera.getParameters();
if (params.getFocusMode().equals(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE))
{
mCamera.cancelAutoFocus(); // cancels continuous focus
List<String> lModes = params.getSupportedFocusModes();
if (lModes != null)
{
if (lModes.contains(Camera.Parameters.FOCUS_MODE_AUTO))
{
params.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO); // auto-focus mode if supported
mCamera.setParameters(params); // set parameters on device
}
}
// start an auto-focus after a slight (100ms) delay
new Handler().postDelayed(new Runnable() {
public void run()
{
mCamera.autoFocus(mAutoFocusCallback); // auto-focus now
}
}, 100);
return;
}
mCamera.autoFocus(mAutoFocusCallback); // do the focus, callback is mAutoFocusCallback
}
catch (Exception e)
{
Log.e("myApp", e.getMessage());
}
}
请尝试一下并报告您的结果
please give this a try and report back your results
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