以使用的服务的照片OnePlus一个 - 使用窗口管理器破解 [英] Take a photo using a service on OnePlus One - using WindowManager hack
问题描述
我想拍摄照片时不向用户显示任何东西（没有意见），通过服务。这个问题已经被问过好几次，我已经通过所有我能找到了。一些类似的问题：
I'm trying to take a picture without showing the user anything (no view) through a service. This question has been asked several times before and I've gone through all I could find. Some similar questions:
<一个href="http://stackoverflow.com/questions/21463796/android-camera-fails-to-take-photo-from-background-service">Android相机无法拍照，从后台服务
多数问题链接到其它问题，而不提供一个新的解决方案。
Most of the questions link to other questions without providing a new solution.
我相信这是解决这个问题的最好办法： http://stackoverflow.com/a/10268650/3860594 不幸的是，人没有提供一个完整的答案，我无法再现他的方法。
I believe this is the best way to solve this problem: http://stackoverflow.com/a/10268650/3860594 Unfortunately the person has not provided a complete answer and I'm having trouble reproducing his method.
我想要做的就是创建一个SurfaceHolder内SurfaceView。然后，我会用窗口管理与SurfaceView创造各种各样是完全透明的，因此，它的用户隐藏浮动窗口。请纠正我，如果我错了。
What I'm trying to do is create a SurfaceView inside a SurfaceHolder. I will then use WindowManager with the SurfaceView to create a floating window of sorts that is completely transparent so that it's hidden from the user. Please correct me if I'm wrong.
下面是我的code：
SurfaceView mview = new SurfaceView(this);
SurfaceHolder mholder = new SurfaceHolder() {
@Override
public void addCallback(Callback callback) {
}
@Override
public void removeCallback(Callback callback) {
}
@Override
public boolean isCreating() {
return false;
}
@Override
public void setType(int type) {
}
@Override
public void setFixedSize(int width, int height) {
}
@Override
public void setSizeFromLayout() {
}
@Override
public void setFormat(int format) {
}
@Override
public void setKeepScreenOn(boolean screenOn) {
}
@Override
public Canvas lockCanvas() {
return null;
}
@Override
public Canvas lockCanvas(Rect dirty) {
return null;
}
@Override
public void unlockCanvasAndPost(Canvas canvas) {
}
@Override
public Rect getSurfaceFrame() {
return null;
}
@Override
public Surface getSurface() {
return null;
}
};
WindowManager wm = (WindowManager) this.getSystemService(Context.WINDOW_SERVICE);
WindowManager.LayoutParams params = new WindowManager.LayoutParams(WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
PixelFormat.TRANSLUCENT);
wm.addView(mview, params);
mview.setZOrderOnTop(true);
mholder.setFormat(PixelFormat.TRANSPARENT);
try {
camera.setPreviewDisplay(mview.getHolder());
camera.startPreview();
camera.takePicture(null,null,photoCallback);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
这一切都不可以作为一般的消息的RuntimeException：takePicture失败显示。任何帮助将是真棒，谢谢。
None of this works as the usual message RuntimeException: takePicture failed is shown. Any help would be awesome, thanks.
推荐答案
它发生这样在拼图的最后一个砖只透露了一个星期的问题被问之后。问题是特定于特定的装置，即，一OnePlus
It happens so that the last brick in the puzzle was only revealed a week after the question was asked. The problem is specific to a particular device, namely, OnePlus One.
样品code在 https://github.com/alexcohn/CameraInService 展示了如何这可以处理;最新提交补充道之间的出发preVIEW和执行延时 takePicture（）。在太太的OnePlus一个实验表明，100毫秒的延迟是正常的，但1毫秒的时间太短。
The sample code at https://github.com/alexcohn/CameraInService shows how this can be handled; the latest commit adds a delay between starting preview and performing takePicture(). The experiment on my wife's OnePlus One shows that delay of 100 ms is OK, but 1 ms is too short.
这篇关于以使用的服务的照片OnePlus一个 - 使用窗口管理器破解的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
