SurfaceView onMeasure() 未通过调用 setMeasuredDimension() 来设置测量的维

Question

我有一个SurfaceView。我只是从另一个线程手动绘制它。

它运行良好。但是平均运行 10-20 分钟后，我得到这个异常：

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)

安卓文档 说：测量
视图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度量。

正如我认为谷歌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。

我认为表面视图的大小永远不会改变。

注意：
My SurfaceView 包含在 RelativeLayout 中。
异常由子项调用，但它是一个视图（异常中的第 3 行）

如果您知道如何解决这个烦人的错误，请帮助我。

编辑：
在 Activity 的 onCreate 中，我从代码中设置了视图（扩展表单 SurfaceView）的大小

安斯发誓评论：
这就是我为所需大小设置一些公共字段的方式：

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

参数初始化：

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

MyView 是用 xml 编写的。
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;
    }
}

整个过程在开始时就发生了。

android:screenOrientation="landscape"

屏幕永远不会变暗。游戏正在运行，只是例外即将到来。
我应该在某个地方调用度量吗？
我不明白为什么过了很久才

开心

必须与此相关的其他一些例外：

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。

我提出了另一个关于 ANR 的问题：具有 3 个线程的 ANR - 使用锁

Answer 1

setMeasuredDimension()

必须在 onMeasure（） 方法中调用。 我遇到了类似的问题，逻辑没有达到setMeasuredDimension（）。 我解决了强制调用 setMeasuredDimension（） 的问题，无论它前面的 if/else 语句是什么。

Answer 2

你使用 Fragment，一开始就不写这一行

super.onCreate(savedInstanceState);

Answer 3

私有双纵横比 = 1.0;

私有布尔值称为重新创建 = true;

在测量中 ：：-双局部比率 = 纵横比;

    if (localRatio == 0.0) {
        super.onMeasure(widthSpec, heightSpec);
    } else {
        int lockedWidth = MeasureSpec.getSize(widthSpec);
        int lockedHeight = MeasureSpec.getSize(heightSpec);
        if (lockedWidth == 0 && lockedHeight == 0) {
            widthSpec = MeasureSpec.makeMeasureSpec((int) (basicWidth), MeasureSpec.AT_MOST);
            heightSpec = MeasureSpec.makeMeasureSpec((int) (basicHeight), MeasureSpec.AT_MOST);
            lockedWidth = MeasureSpec.getSize(widthSpec);
            lockedHeight = MeasureSpec.getSize(heightSpec);
            Log.i(TAG, "onMeasure: onMeasure");
            callForRecreate();
        }
        // Get the padding of the border background.
        int hPadding = getPaddingLeft() + getPaddingRight();
        int vPadding = getPaddingTop() + getPaddingBottom();
        // Resize the preview frame with correct aspect ratio.
        lockedWidth -= hPadding;
        lockedHeight -= vPadding;
        if (lockedHeight > 0 && (lockedWidth > lockedHeight * localRatio)) {
            lockedWidth = (int) (lockedHeight * localRatio + .5);
        } else {
            lockedHeight = (int) (lockedWidth / localRatio + .5);
        }
        // Add the padding of the border.
        lockedWidth += hPadding;
        lockedHeight += vPadding;
        // Ask children to follow the new preview dimension.
        super.onMeasure(MeasureSpec.makeMeasureSpec(lockedWidth, MeasureSpec.EXACTLY), MeasureSpec.makeMeasureSpec(lockedHeight, MeasureSpec.EXACTLY));

注意 ：- callForRecreate（） 因为您必须创建或重新启动活动

Answer 4

请务必致电super.onMeasure（widthMeasureSpec，heightMeasureSpec）;例如@Overrideprotected void onMeasure（int widthMeasureSpec， int heightMeasureSpec） {super.onMeasure（widthMeasureSpec，heightMeasureSpec）;然后你的代码}