为什么闪存驱动器应用程序在堆栈？ CONTROL_AE_MODE_ON_ALWAYS_FLASH Camera2API [英] Why does flash drives app in stack? CONTROL_AE_MODE_ON_ALWAYS_FLASH Camera2API

问题描述

有奇怪的情况。我使用了 standard google sample camera2API 。

我需要闪光灯永久工作， 。

为了完成它，我改变了一行代码：

  private void setAutoFlash（CaptureRequest.Builder requestBuilder）{
 if（mFlashSupported）{
 // requestBuilder.set（CaptureRequest.CONTROL_AE_MODE，CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH）; 
 requestBuilder.set（CaptureRequest.CONTROL_AE_MODE，CaptureRequest.CONTROL_AE_MODE_ON_ALWAYS_FLASH）; 
} 
} 
  

CONTROL_AE_MODE_ON_AUTO_FLASH 我已将它更改为 CONTROL_AE_MODE_ON_ALWAYS_FLASH 。

拍照按钮，相机闪烁，就是这样。应用程序进入堆栈...

我做错了什么？

>

我想出下一个：

我在三个不同的设备上尝试了tern c> Meizu MX5 ， Samsung S5 和 Samsung S6 。

其中两个 Meizu MX5 ， Samsung S5 可正常使用上述代码和应用程​​式

问题发生在 Samsung S6 ，但...

方法 setAutoFlash（）在不同位置调用代码3次

1. captureStillPicture（）


2. unlockFocus（）


3. onConfigured（）

窍门是如果我禁用 setAutoFlash（）在 captureStillPicture（） code>它是停止堆叠和闪光开始工作，但如果我尝试这种方法 Meizu MX5 ， Samsung S5 flash不起作用...

解决方案

最终找到解决方案

As i said method

  protected final void setAutoFlash（CaptureRequest.Builder requestBuilder）{
 if（isFlashSupported ）{
 requestBuilder.set（CaptureRequest.CONTROL_AE_MODE，CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH）; 
} 
} 
  

在代码中的三个不同位置调用。

1. captureStillPicture（）


2. unlockFocus（）


3. onConfigured（）

所以我在每个方法中实现本行 requestBuilder.set（CaptureRequest.CONTROL_AE_MODE，CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH）; p>

最后，我得到：

1. unlockFocus / code> - >
mPreviewRequestBuilder.set（CaptureRequest.CONTROL_AE_MODE，
CaptureRequest.CONTROL_AE_MODE_ON_AL_WAYS_FLASH）;


2. onConfigured（） - >
   mPreviewRequestBuilder.set（CaptureRequest.CONTROL_AE_MODE，
CaptureRequest.CONTROL_AE_MODE_ON_ALWAYS_FLASH） code>



此方法仍保留自动设置

< =3>

captureStillPicture（） - >
captureBuilder.set（CaptureRequest.CONTROL_AE_MODE，
CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH）;

但我不知道为什么我得到这样的问题...如果有人知道原因，请让我知道。

There is weird situation. I took standard google sample camera2API.

I need that flash is worked permanently, regardless of outside light.

In order to accomplish it i have changed one line of code:

private void setAutoFlash(CaptureRequest.Builder requestBuilder) {
    if (mFlashSupported) {
//            requestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
        requestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_ALWAYS_FLASH);
    }
}

It was CONTROL_AE_MODE_ON_AUTO_FLASH i have changed it to CONTROL_AE_MODE_ON_ALWAYS_FLASH.

And i have faced with issue, when i click Take picture button, camera is flashing and that is it. App goes to stack...

What am i doing wrong?

EDIT

I figure out next:

i have tryed tern on flash on three different device Meizu MX5, Samsung S5 and Samsung S6.

Two of them Meizu MX5, Samsung S5 work correctly with code above and app doesn't drives in stack.

Problem occur with Samsung S6, BUT ...

Method setAutoFlash() invokes within code 3 times in different places

1. captureStillPicture()
2. unlockFocus()
3. onConfigured()

And trick is if i disable setAutoFlash() in captureStillPicture() for Samsung S6 it is stop stacking and flash begins to works but if i try this approach for Meizu MX5, Samsung S5 flash doesn't works...

解决方案

Eventually i found solution

As i said method

protected final void setAutoFlash(CaptureRequest.Builder requestBuilder) {
    if (isFlashSupported) {
        requestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
    }
}

invoked in three different places in code.

1. captureStillPicture()
2. unlockFocus()
3. onConfigured()

So i implemented this line requestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH); locally in each method.

Finally that i get :

1. unlockFocus() -> mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_ALWAYS_FLASH);
2. onConfigured() -> mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_ALWAYS_FLASH);

and for this method remained auto settings

3. captureStillPicture() -> captureBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);

But i don't know the reason why i got such issue... If someone know the reason please let me know.

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