ShowCaseView内存不足错误

Question

我在Galaxy家族遇到了一些麻烦，展示视图在任何其他设备上都是完美无缺的，但我在Galaxy设备上得到了以下错误。

java.lang.OutOfMemoryError: Failed to allocate a 5760012 byte allocation with 3573238 free bytes and 3MB until OOM at dalvik.system.VMRuntime.newNonMovableArray(VMRuntime.java) at android.graphics.BitmapFactory.nativeDecodeAsset(BitmapFactory.java)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:726)
at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:547)
at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:1014)
at android.content.res.Resources.loadDrawableForCookie(Resources.java:3747)
at android.content.res.Resources.loadDrawable(Resources.java:3620) at android.content.res.Resources.getDrawable(Resources.java:1852) at android.support.v4.content.res.ResourcesCompatApi21.getDrawable(ResourcesCompatApi21.java)
at android.support.v4.content.res.ResourcesCompat.getDrawable(ResourcesCompat.java)
at com.github.amlcurran.showcaseview.StandardShowcaseDrawer.(StandardShowcaseDrawer.java)
at com.github.amlcurran.showcaseview.ShowcaseView.(ShowcaseView.java)
at com.github.amlcurran.showcaseview.ShowcaseView.(ShowcaseView.java)
at com.github.amlcurran.showcaseview.ShowcaseView$Builder.(ShowcaseView.java)
at com.github.amlcurran.showcaseview.ShowcaseView$Builder.(ShowcaseView.java)
at br.com.mygas.myapplication.MainActivity.showcase(MainActivity.java)
at br.com.mygas.myapplication.MainActivity.access$300(MainActivity.java)
at br.com.mygas.myapplication.MainActivity$5.onShowcaseViewDidHide(MainActivity.java)
at com.github.amlcurran.showcaseview.ShowcaseView$2.onAnimationEnd(ShowcaseView.java)
at com.github.amlcurran.showcaseview.AnimatorAnimationFactory$2.onAnimationEnd(AnimatorAnimationFactory.java)
at android.animation.ValueAnimator.endAnimation(ValueAnimator.java:1089)
at android.animation.ValueAnimator$AnimationHandler.doAnimationFrame(ValueAnimator.java:666)
at android.animation.ValueAnimator$AnimationHandler.run(ValueAnimator.java:682)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:777)
at android.view.Choreographer.doCallbacks(Choreographer.java:590) at
android.view.Choreographer.doFrame(Choreographer.java:559) at
android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:763)
at android.os.Handler.handleCallback(Handler.java:739) at
android.os.Handler.dispatchMessage(Handler.java:95) at
android.os.Looper.loop(Looper.java:145) at
android.app.ActivityThread.main(ActivityThread.java:5942) at
java.lang.reflect.Method.invoke(Method.java) at
java.lang.reflect.Method.invoke(Method.java:372) at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)

这是实现的代码，它产生了上述错误：

private void showcase() {
        if (SaveSharedPreference.isMainActivity(this)) {
            switch (counter) {
                case 0:
                    new ShowcaseView.Builder(this)
                            .withMaterialShowcase()
                            .setContentTitle("Esta é a tela inicial:")
                            .setStyle(R.style.CustomShowcaseThemeNext)
                            .setShowcaseEventListener(new SimpleShowcaseEventListener() {
                                @Override
                                public void onShowcaseViewDidHide(ShowcaseView showcaseView) {
                                    counter++;
                                    showcase();
                                }
                            })
                            .build();
                    break;

                case 1:
                    new ShowcaseView.Builder(this)
                            .setContentTitle("Selecione o tipo de combustível:")
                            .setTarget(new ViewTarget(R.id.spinner, this))
                            .setShowcaseDrawer(new CustomShowcaseView(this, findViewById(R.id.spinner).getWidth(), findViewById(R.id.spinner).getHeight()))
                            .setShowcaseEventListener(new SimpleShowcaseEventListener() {
                                @Override
                                public void onShowcaseViewDidHide(ShowcaseView showcaseView) {
                                    counter++;
                                    showcase();
                                }
                            })
                            .build();
                    break;

                case 2:
                    new ShowcaseView.Builder(this)
                            .withMaterialShowcase()
                            .setTarget(new ViewTarget(R.id.fab2, this))
                            .setContentTitle("Clique neste botão para procurar combustível ao redor:")
                            .setStyle(R.style.CustomShowcaseThemeNext)
                            .setShowcaseEventListener(new SimpleShowcaseEventListener() {
                                @Override
                                public void onShowcaseViewDidHide(ShowcaseView showcaseView) {
                                    counter++;
                                    showcase();
                                }
                            })
                            .build();
                    break;

                case 3:
                    new ShowcaseView.Builder(this)
                            .withMaterialShowcase()
                            .setTarget(new ViewTarget(R.id.fab2, this))
                            .setContentTitle("Lembre-se:")
                            .setContentText("É necessário estar com o GPS ligado")
                            .setStyle(R.style.CustomShowcaseTheme2)
                            .setShowcaseEventListener(new SimpleShowcaseEventListener() {
                                @Override
                                public void onShowcaseViewDidHide(ShowcaseView showcaseView) {
                                    counter++;
                                    showcase();
                                }
                            })
                            .build();
                    SaveSharedPreference.mainActivityFirst(this);
                    break;
            }
        }
    }

我不知道这个错误是从哪里来的，所以我想找点建议。

Answer 1

解决了将方法隐藏在ShowcaseView.java中的问题，如下所示：

@Override
    public void hide() {
        // If the type is set to one-shot, store that it has shot
        shotStateStore.storeShot();
        mEventListener.onShowcaseViewHide(this);
        fadeOutShowcase();
    }

对此：

@Override
    public void hide() {
        // If the type is set to one-shot, store that it has shot
        clearBitmap();
        shotStateStore.storeShot();
        mEventListener.onShowcaseViewHide(this);
        fadeOutShowcase();
    }

Answer 2

OutOfMemoryError是安卓系统中最常见的问题，尤其是在处理位图时。当由于缺少内存空间而无法分配对象时，Java虚拟机(JVM)会抛出此错误，而且垃圾收集器也无法释放一些空间。

磁盘上文件的大小不一定与内存中文件的大小一致。该文件很可能被压缩，而在解码时它们不会被压缩。你需要在你的计算中说明这一点。

您可以参考如何有效地加载位图？上的本文

如何有效地加载大位图？

--虽然使用 android:largeHeap="true"不是个好主意--以下是谷歌的摘录，

然而，请求一个大堆的能力只适用于一小部分应用程序，这些应用程序可以证明需要消耗更多的RAM (如大型照片编辑应用程序)。千万不要仅仅因为内存用完而请求大堆，并且需要快速修复--只有当您确切地知道分配内存的位置和必须保留内存的原因时，才应该使用它。然而，即使你确信你的应用程序可以证明你的大堆是正确的，你也应该避免在任何可能的程度上请求它。使用额外的内存将越来越不利于整个用户体验，因为当任务切换或执行其他常见操作时，垃圾收集将花费更长的时间，而系统性能可能会更慢。

以下是文档https://developer.android.com/training/articles/memory.html的完整链接

但是，您可以尝试在andriod清单文件中设置它并运行。