我正在开发一个使用相机的应用程序。我尝试了两个不同的代码，它们完成了 2 个不同的任务，在 Windows 10 上它们没有给我任何问题并且工作正常，在 android 上运行它们给了我一些问题。
第一个代码应该在我每次触摸屏幕并在屏幕上显示图片时拍照，但每次我触摸屏幕时都会出现错误Camera is not ready 提示并且屏幕上没有显示图像。
import QtQuick
import QtMultimedia
Window {
id: main_window
width: Screen.desktopAvailableWidth
height: Screen.desktopAvailableHeight
visible: true
MediaDevices {
id: mediaDevices
}
CaptureSession {
Component.onCompleted: {
camera.start()
}
id:captureSession
camera: Camera { id: camera }
imageCapture: ImageCapture {
onErrorOccurred: function(requestId, error, message) {
console.log("Error occurred:"+message+"\nCamera active:"+camera.active+"\nImage capture ready:"+captureSession.imageCapture.readyForCapture+"\n")
}
onImageCaptured: {
console.log("Image captured\n")
}
}
}
Image {
id: image
anchors.fill: parent
source: captureSession.imageCapture.preview
MouseArea {
id: mouseArea
anchors.fill: parent
onClicked: {
captureSession.imageCapture.capture()
}
}
}
}
在我的手机上调试这段代码，这是我触摸屏幕一次后的输出：
E Zygote : isWhitelistProcess - Process is Whitelisted
E Zygote : accessInfo : 1
I tQuickAppBackU: Late-enabling -Xcheck:jni
E tQuickAppBackU: Unknown bits set in runtime_flags: 0x8000
D ActivityThread: setConscryptValidator
D ActivityThread: setConscryptValidator - put
W System : ClassLoader referenced unknown path:
D PhoneWindow: forceLight changed to true [] from com.android.internal.policy.PhoneWindow.updateForceLightNavigationBar:4274 com.android.internal.policy.DecorView.updateColorViews:1547 com.android.internal.policy.PhoneWindow.dispatchWindowAttributesChanged:3252 android.view.Window.setFlags:1153 com.android.internal.policy.PhoneWindow.generateLayout:2474
I MultiWindowDecorSupport: [INFO] isPopOver = false
I MultiWindowDecorSupport: updateCaptionType >> DecorView@85f9c98[], isFloating: false, isApplication: true, hasWindowDecorCaption: false, hasWindowControllerCallback: true
D MultiWindowDecorSupport: setCaptionType = 0, DecorView = DecorView@85f9c98[]
D Qt JAVA : Class org.qtproject.qt.android.multimedia.QtAudioDeviceManager does not implement setActivity method
I QtCore : Start
I Qt : qt started
I ViewRootImpl@879196a[QtActivity]: setView = com.android.internal.policy.DecorView@85f9c98 TM=true MM=false
I ViewRootImpl@879196a[QtActivity]: Relayout returned: old=(0,0,1080,2400) new=(0,0,1080,2400) req=(1080,2400)0 dur=11 res=0x7 s={true 513189548032} ch=true
D OpenGLRenderer: createReliableSurface : 0x777c754940(0x777c7b1000)
D OpenGLRenderer: makeCurrent EglSurface : 0x0 -> 0x0
I mali_winsys: new_window_surface() [1080x2400] return: 0x3000
D OpenGLRenderer: eglCreateWindowSurface : 0x7771e9a700
D OpenGLRenderer: makeCurrent EglSurface : 0x0 -> 0x7771e9a700
W Gralloc3: mapper 3.x is not supported
I gralloc : Arm Module v1.0
I ViewRootImpl@879196a[QtActivity]: MSG_WINDOW_FOCUS_CHANGED 1 1
D InputMethodManager: prepareNavigationBarInfo() DecorView@85f9c98[QtActivity]
D InputMethodManager: getNavigationBarColor() -855310
D InputMethodManager: prepareNavigationBarInfo() DecorView@85f9c98[QtActivity]
D InputMethodManager: getNavigationBarColor() -855310
V InputMethodManager: Starting input: tba=org.qtproject.example.FirstQtQuickAppBackUp ic=null mNaviBarColor -855310 mIsGetNaviBarColorSuccess true , NavVisible : true , NavTrans : false
D InputMethodManager: startInputInner - Id : 0
I InputMethodManager: startInputInner - mService.startInputOrWindowGainedFocus
I ViewRootImpl@879196a[QtActivity]: MSG_RESIZED: frame=(0,0,1080,2400) ci=(0,93,0,126) vi=(0,93,0,126) or=1
D InputMethodManager: prepareNavigationBarInfo() DecorView@85f9c98[QtActivity]
D InputMethodManager: getNavigationBarColor() -855310
V InputMethodManager: Starting input: tba=org.qtproject.example.FirstQtQuickAppBackUp ic=null mNaviBarColor -855310 mIsGetNaviBarColorSuccess true , NavVisible : true , NavTrans : false
D InputMethodManager: startInputInner - Id : 0
I SurfaceView: onWindowVisibilityChanged(0) true org.qtproject.qt.android.QtSurface{545da3c V.E...... ......I. 0,0-0,0 #1} of ViewRootImpl@879196a[QtActivity]
I ViewRootImpl@879196a[QtActivity]: Relayout returned: old=(0,0,1080,2400) new=(0,0,1080,2400) req=(1080,2400)0 dur=5 res=0x1 s={true 513189548032} ch=false
I SurfaceView: surfaceCreated 1 #8 org.qtproject.qt.android.QtSurface{545da3c V.E...... ......ID 0,0-1080,2181 #1}
I SurfaceView: surfaceChanged (1080,2181) 1 #8 org.qtproject.qt.android.QtSurface{545da3c V.E...... ......ID 0,0-1080,2181 #1}
I mali_winsys: new_window_surface() [1080x2181] return: 0x3000
I OpenGLRenderer: doUpdatePositionAsync is called and callVoidMethod
D InputMethodManager: HSIFW - flag : 0
I InputMethodManager: hideSoftInputFromWindow ignore mServedView == null or mServedView.getWindowToken() != windowToken, mServedView :DecorView@85f9c98[QtActivity]
I ViewRootImpl@879196a[QtActivity]: ViewPostIme pointer 0
I ViewRootImpl@879196a[QtActivity]: ViewPostIme pointer 1
D qml : : Error occurred:Camera is not ready.
D qml : Camera active:false
D qml : Image capture ready:false
12-15 18:36:29.681 7941 10018 D qml :
第二个代码应该显示来自相机的实时图像，它符合我的预期，但应用程序输出包含递归错误W OpenGLRenderer: [SurfaceTexture-0-9089-0] bindTextureImage: clearing GL error: 0x500：
import QtQuick
import QtMultimedia
Window {
id: main_window
width: Screen.desktopAvailableWidth
height: Screen.desktopAvailableHeight
visible: true
MediaDevices {
id: mediaDevices
}
CaptureSession {
Component.onCompleted: {
camera.start()
}
id:captureSession
camera: Camera { id: camera }
imageCapture: ImageCapture {
onErrorOccurred: function(requestId, error, message) {
console.log("Error occurred:"+message+"\nCamera active:"+camera.active+"\nImage capture ready:"+captureSession.imageCapture.readyForCapture+"\n")
}
onImageCaptured: {
console.log("Image captured\n")
}
}
videoOutput: videoOutput
}
VideoOutput {
id: videoOutput
anchors.fill: parent
}
}
这是应用程序输出：
E Zygote : isWhitelistProcess - Process is Whitelisted
E Zygote : accessInfo : 1
I tQuickAppBackU: Late-enabling -Xcheck:jni
E tQuickAppBackU: Unknown bits set in runtime_flags: 0x8000
D ActivityThread: setConscryptValidator
D ActivityThread: setConscryptValidator - put
W System : ClassLoader referenced unknown path:
D PhoneWindow: forceLight changed to true [] from com.android.internal.policy.PhoneWindow.updateForceLightNavigationBar:4274 com.android.internal.policy.DecorView.updateColorViews:1547 com.android.internal.policy.PhoneWindow.dispatchWindowAttributesChanged:3252 android.view.Window.setFlags:1153 com.android.internal.policy.PhoneWindow.generateLayout:2474
I MultiWindowDecorSupport: [INFO] isPopOver = false
I MultiWindowDecorSupport: updateCaptionType >> DecorView@85f9c98[], isFloating: false, isApplication: true, hasWindowDecorCaption: false, hasWindowControllerCallback: true
D MultiWindowDecorSupport: setCaptionType = 0, DecorView = DecorView@85f9c98[]
D Qt JAVA : Class org.qtproject.qt.android.multimedia.QtAudioDeviceManager does not implement setActivity method
I QtCore : Start
I Qt : qt started
I ViewRootImpl@879196a[QtActivity]: setView = com.android.internal.policy.DecorView@85f9c98 TM=true MM=false
I ViewRootImpl@879196a[QtActivity]: Relayout returned: old=(0,0,1080,2400) new=(0,0,1080,2400) req=(1080,2400)0 dur=11 res=0x7 s={true 513189830656} ch=true
D OpenGLRenderer: createReliableSurface : 0x777c754e40(0x777c7f6000)
D OpenGLRenderer: makeCurrent EglSurface : 0x0 -> 0x0
I mali_winsys: new_window_surface() [1080x2400] return: 0x3000
D OpenGLRenderer: eglCreateWindowSurface : 0x777c750900
D OpenGLRenderer: makeCurrent EglSurface : 0x0 -> 0x777c750900
W Gralloc3: mapper 3.x is not supported
I gralloc : Arm Module v1.0
I ViewRootImpl@879196a[QtActivity]: MSG_WINDOW_FOCUS_CHANGED 1 1
D InputMethodManager: prepareNavigationBarInfo() DecorView@85f9c98[QtActivity]
D InputMethodManager: getNavigationBarColor() -855310
D InputMethodManager: prepareNavigationBarInfo() DecorView@85f9c98[QtActivity]
D InputMethodManager: getNavigationBarColor() -855310
V InputMethodManager: Starting input: tba=org.qtproject.example.FirstQtQuickAppBackUp ic=null mNaviBarColor -855310 mIsGetNaviBarColorSuccess true , NavVisible : true , NavTrans : false
D InputMethodManager: startInputInner - Id : 0
I InputMethodManager: startInputInner - mService.startInputOrWindowGainedFocus
I ViewRootImpl@879196a[QtActivity]: MSG_RESIZED: frame=(0,0,1080,2400) ci=(0,93,0,126) vi=(0,93,0,126) or=1
D InputMethodManager: prepareNavigationBarInfo() DecorView@85f9c98[QtActivity]
D InputMethodManager: getNavigationBarColor() -855310
V InputMethodManager: Starting input: tba=org.qtproject.example.FirstQtQuickAppBackUp ic=null mNaviBarColor -855310 mIsGetNaviBarColorSuccess true , NavVisible : true , NavTrans : false
D InputMethodManager: startInputInner - Id : 0
I SurfaceView: onWindowVisibilityChanged(0) true org.qtproject.qt.android.QtSurface{545da3c V.E...... ......I. 0,0-0,0 #1} of ViewRootImpl@879196a[QtActivity]
I ViewRootImpl@879196a[QtActivity]: Relayout returned: old=(0,0,1080,2400) new=(0,0,1080,2400) req=(1080,2400)0 dur=8 res=0x1 s={true 513189830656} ch=false
I SurfaceView: surfaceCreated 1 #8 org.qtproject.qt.android.QtSurface{545da3c V.E...... ......ID 0,0-1080,2181 #1}
I SurfaceView: surfaceChanged (1080,2181) 1 #8 org.qtproject.qt.android.QtSurface{545da3c V.E...... ......ID 0,0-1080,2181 #1}
I mali_winsys: new_window_surface() [1080x2181] return: 0x3000
I OpenGLRenderer: doUpdatePositionAsync is called and callVoidMethod
D InputMethodManager: HSIFW - flag : 0
I InputMethodManager: hideSoftInputFromWindow ignore mServedView == null or mServedView.getWindowToken() != windowToken, mServedView :DecorView@85f9c98[QtActivity]
W System.err: java.lang.IllegalArgumentException: Invalid pixel_format=1598379073
W System.err: at android.hardware.Camera$Parameters.setPreviewFormat(Camera.java:3182)
D SensorManager: registerListener :: 1, LSM6DSL Accelerometer, 200000, 0,
W System.err: java.lang.IllegalArgumentException: Invalid pixel_format=1598379073
W System.err: at android.hardware.Camera$Parameters.setPreviewFormat(Camera.java:3182)
W Gralloc3: allocator 3.x is not supported
W OpenGLRenderer: [SurfaceTexture-0-9089-0] bindTextureImage: clearing GL error: 0x500
W OpenGLRenderer: [SurfaceTexture-0-9089-0] bindTextureImage: clearing GL error: 0x500
最后两行是递归的并重复几次。环境：
- qt 6.2.2
- 窗户 10
- qtcreator 6.0.0
- 手机架构：arm64-v8a
有人可以帮我解决这个问题吗？希望我说清楚了。先感谢您