Question

我有一个SurfaceView。我只是从另一个线程手动绘制它。

运行得很好。但是在平均运行10-20分钟后，我得到了这个例外：

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 Documention说：
测量视图及其内容以确定测量宽度和测量高度。此方法由measure（int，int）调用，并应由子类覆盖，以提供准确有效的内容测量。

我认为谷歌的原始实现是：

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

我不知道我应该在这里实施什么。

我认为表面视图的大小永远不会改变。

注意：
我的SurfaceView包含在RelativeLayout中。
该例外由一个孩子调用，但它是一个视图（例外中的第3行）

如果你知道我怎么能解决这个烦人的错误，请帮助我。

修改
在Activity的onCreate中，我从代码

设置视图的大小（扩展形式为SurfaceView）

Answear评论：
这就是我设置一些所需大小的公共字段的方法：

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编写的。
然后我在上面写了一些东西：

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;
    }
}

整个过程在一开始就发生了。

android:screenOrientation="landscape"

屏幕永远不会变暗。游戏正在运行，只是异常即将到来。
我应该在某处调用措施吗？我不明白为什么很久以后就会开心呢

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 - 是谷歌分析的东西。

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

Answer 1

setMeasuredDimension()

必须在onMeasure（）方法内部调用。我有一个类似的问题，逻辑没有达到setMeasuredDimension（）。我解决了它强制调用setMeasuredDimension（），无论if / else语句在它之前是什么。

Answer 2

你使用Fragment并且不要在第一个

写这行

super.onCreate(savedInstanceState);

Answer 3

private double AspectRatio = 1.0;

私有布尔isCalledRecreate = true;

在 onMeasure 中::: double localRatio = AspectRatio;

    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 @Override 受保护的void onMeasure（int widthMeasureSpec，int heightMeasureSpec）{ super.onMeasure（widthMeasureSpec，heightMeasureSpec）; //然后输入您的代码 }

SurfaceView onMeasure（）没有通过调用setMeasuredDimension（）来设置测量的维度

4 个答案: