Question

我正在向View添加WindowManager并覆盖它的onConfigurationChanged函数，如下所示：

查看代码

// onConfigurationChanged should be called after config change has finished
override fun onConfigurationChanged(newConfig: Configuration) {
    super.onConfigurationChanged(newConfig)
    // also tried executing following in the `GlobalLayoutListener` without any difference
    onConfigOrSystemUIChanged(newConfig)
}

fun onConfigOrSystemUIChanged(newConfig: Configuration?) {
    val screen = getScreenSize(this)

    // screen should hold current screen size
    // but this sometimes contains the wrong size, the one from before the config change

    L.d("[%s] Config changed (%s)", logBaseInfo, screen)
}

服务代码

override fun onConfigurationChanged(newConfig: Configuration) {
    super.onConfigurationChanged(newConfig)

    val screen = getScreenSize(this)
    L.d("Config changed in SERVICE: Screen: %s | newConfig: %s", screen, newConfig);
}

问题

我可以看到这大约有99％的时间有效。我旋转设备，打开，关闭设备等等，一切正常。但是我时不时地看到它一次失败，这意味着旋转设备后，我的视图读取了错误的屏幕尺寸。有什么想法吗？

其他信息-日志

我在服务的onConfigurationChanged和视图的onConfigurationChanged中添加了一些日志。我将5个视图添加到WindowManager中，并查看以下内容：

[OverlayService:168 onConfigurationChanged]: Config changed in SERVICE: Screen: Point(2076, 1080) | newConfig: {0 1.0 themeSeq = 0 showBtnBg = 0 232mcc1mnc [de_AT] ldltr sw360dp w692dp h336dp 480dpi nrml long hdr land finger -keyb/v/h -nav/h appBounds=Rect(144, 0 - 2220, 1080) s.839 mkbd/h desktop/d ?dc}
[BaseMviOverlayView:115 onConfigOrSystemUIChanged]: [MviHandleView[Index: 24]] Config changed (Point(2076, 1080))
[BaseMviOverlayView:115 onConfigOrSystemUIChanged]: [MviHandleView[Index: 26]] Config changed (Point(2076, 1080))
[BaseMviOverlayView:115 onConfigOrSystemUIChanged]: [MviHandleView[Index: 52]] Config changed (Point(2076, 1080))
[BaseMviOverlayView:115 onConfigOrSystemUIChanged]: [MviHandleView[Index: 53]] Config changed (Point(2076, 1080))
=> [BaseMviOverlayView:115 onConfigOrSystemUIChanged]: [MviHandleView[Index: 65]] Config changed (Point(1080, 2076))
// ... here some time that wents by ...
[OverlayService:168 onConfigurationChanged]: Config changed in SERVICE: Screen: Point(1080, 2076) | newConfig: {0 1.0 themeSeq = 0 showBtnBg = 0 232mcc1mnc [de_AT] ldltr sw360dp w360dp h668dp 480dpi nrml long hdr port finger -keyb/v/h -nav/h appBounds=Rect(0, 0 - 1080, 2076) s.840 mkbd/h desktop/d ?dc}
[BaseMviOverlayView:115 onConfigOrSystemUIChanged]: [MviHandleView[Index: 26]] Config changed (Point(1080, 2076))
[BaseMviOverlayView:115 onConfigOrSystemUIChanged]: [MviHandleView[Index: 52]] Config changed (Point(1080, 2076))
[BaseMviOverlayView:115 onConfigOrSystemUIChanged]: [MviHandleView[Index: 53]] Config changed (Point(1080, 2076))
[BaseMviOverlayView:115 onConfigOrSystemUIChanged]: [MviHandleView[Index: 65]] Config changed (Point(1080, 2076))
[BaseMviOverlayView:115 onConfigOrSystemUIChanged]: [MviHandleView[Index: 24]] Config changed (Point(1080, 2076))

在这里您看到一个视图（在日志行的第6行的开头标记为=>）的屏幕尺寸确实错误，我不知道为什么。 ..

附加信息-功能

fun getScreenSize(context: Context) {
    val wm = context.getSystemService(Context.WINDOW_SERVICE) as WindowManager
    val outSize = Point()
    wm.getDefaultDisplay().getSize(outSize)
    return outSize
}

Answer 1

这可能是由于在屏幕旋转尚未完成时测量视图而引起的。尝试设置超时时间。

clearTimeout(t)
t = setTimeout(function(){/*do your stuff here*/},200);

这里t是全局变量-如果在测量屏幕尺寸之前旋转屏幕，则将clearTimeout清除。尝试以毫秒为单位播放时间（在我的代码200中）以优化所需的行为。

WindowManager中的View的onConfigurationChanged无法正常工作

1 个答案: