android - SurfaceView onMeasure() 没有调用setMeasuredDimension() 设置测量维度

Question

我有一个 SurfaceView。我只是从其他线程手动绘制它。

运行良好。但是平均运行 10-20 分钟后，我得到了这个异常:

01-14 08:51:25.000    3740-3740/com.myPackage E/AndroidRuntime﹕ FATAL EXCEPTION: main
    java.lang.IllegalStateException: onMeasure() did not set the measured dimension by calling setMeasuredDimension()
            at android.view.View.measure(View.java:15200)
            at android.widget.RelativeLayout.measureChild(RelativeLayout.java:602)
            at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:415)
            at android.view.View.measure(View.java:15195)
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4823)
            at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
            at android.view.View.measure(View.java:15195)
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4823)
            at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390)
            at android.widget.LinearLayout.measureVertical(LinearLayout.java:681)
            at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
            at android.view.View.measure(View.java:15195)
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4823)
            at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
            at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2340)
            at android.view.View.measure(View.java:15195)
            at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1850)
            at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1102)
            at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1275)
            at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
            at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4216)
            at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
            at android.view.Choreographer.doCallbacks(Choreographer.java:555)
            at android.view.Choreographer.doFrame(Choreographer.java:525)
            at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
            at android.os.Handler.handleCallback(Handler.java:615)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4813)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:792)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:559)
            at dalvik.system.NativeStart.main(Native Method)

Android 文档说:
测量 View 及其内容以确定测量的宽度和测量的高度。此方法由 measure(int, int) 调用，应由子类覆盖以提供对其内容的准确有效的测量。

我认为 google 的原始实现是这样的:

@Override
    protected void More ...onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int width = getDefaultSize(mRequestedWidth, widthMeasureSpec);
        int height = getDefaultSize(mRequestedHeight, heightMeasureSpec);
        setMeasuredDimension(width, height);
    }

我不知道我还应该在这里实现什么。

我认为表面 View 的大小永远不会改变。

注意:
我的 SurfaceView 包含在 RelativeLayout 中。
异常是子调用的，但是是view(异常中的第3行)

如果您知道我该如何解决这个烦人的错误，请帮助我。

编辑:
在 Activity 的 onCreate 中，我通过代码设置 View (扩展形式 SurfaceView)的大小

发誓评论:
这就是我为所需大小设置一些公共(public)字段的方式:

Parameters.initialize(getResources().getDisplayMetrics().widthPixels,
                getResources().getDisplayMetrics().heightPixels);

Parameters.initialize:

public static void initialize(int screenWidth, int screenHeight){
    FIELD_WIDTH = screenWidth;
    FIELD_HEIGHT = (int)(0.92f * screenHeight);
}

MyView是用xml写的。
然后我在上面设置了一些东西:

public class MyViewManager {
    protected MyView mMyView;

    public FieldPainterComp(MainActivity activity) {
        super(activity);
        initialize();
    }

    private void initialize(){
        mMyView= (MyView) activity.findViewById(R.id.vMyView);
        mMyView.getLayoutParams().height = Parameters.FIELD_HEIGHT;
        mMyView.getLayoutParams().width = Parameters.FIELD_WIDTH;
    }
}

这整个过程发生在一开始。

android:screenOrientation="landscape"

屏幕永远不会变暗。游戏正在运行，只是异常来了。
我应该在某处调用measure吗？
我不明白为什么隔了这么久还是这样

必须与此相关的其他一些异常:

01-19 11:53:39.812  29666-31881/com.mypackage V/GAV4﹕ Thread[disconnect check,5,main]: Disconnecting due to inactivity
01-19 11:53:39.812  29666-31881/com.mypackage V/GAV4﹕ Thread[disconnect check,5,main]: Disconnected from service
01-19 11:57:17.732  29666-29666/com.mypackage D/AndroidRuntime﹕ Shutting down VM
01-19 11:57:17.732  29666-29666/com.mypackage W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x420face0)
01-19 11:57:17.812  29666-29666/com.mypackage V/GAV4﹕ Thread[main,5,main]: Tracking Exception: IllegalStateException (@View:measure:16533) {main}
01-19 11:57:17.832  29666-29666/com.mypackage V/GAV4﹕ Thread[main,5,main]: Dispatch call queued. Dispatch will run once initialization is complete.
01-19 12:19:27.982  29666-29670/com.mypackage I/dalvikvm﹕ threadid=3: reacting to signal 3
01-19 12:19:28.262  29666-29670/com.mypackage I/dalvikvm﹕ Wrote stack traces to '/data/anr/traces.txt'
01-19 12:19:32.452  29666-29666/com.mypackage A/libc﹕ Fatal signal 6 (SIGABRT) at 0x0000025a (code=0), thread 29666 (ames.adaptation)

GAV - 是 Google Analytics 的东西。

我发起了另一个关于 ANR 的问题:ANR with 3 threads - using locks

Answer 1

setMeasuredDimension()

必须在您的 onMeasure() 方法内部调用。我有一个类似的问题，逻辑没有到达 setMeasuredDimension()。我解决了它强制调用 setMeasuredDimension() 而不管它前面的 if/else 语句是什么。