Canvas: trying to use a recycled bitmap android.graphics.Bitmap@_打不过我吧的博客

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java.lang.RuntimeException: Canvas: 
trying to use a recycled bitmap android.graphics.Bitmap@3073cd5
                                                                                      at android.graphics.BaseCanvas.throwIfCannotDraw(BaseCanvas.java:55)
                                                                                      at android.view.DisplayListCanvas.throwIfCannotDraw(DisplayListCanvas.java:226)
                                                                                      at android.view.RecordingCanvas.drawBitmap(RecordingCanvas.java:97)
                                                                                      at android.graphics.drawable.BitmapDrawable.draw(BitmapDrawable.java:529)
                                                                                      at android.view.View.getDrawableRenderNode(View.java:19377)
                                                                                      at android.view.View.drawBackground(View.java:19313)
                                                                                      at android.view.View.draw(View.java:19110)
                                                                                      at android.view.View.updateDisplayListIfDirty(View.java:18069)
                                                                                      at android.view.View.draw(View.java:18847)
                                                                                      at android.view.ViewGroup.drawChild(ViewGroup.java:4214)
                                                                                      at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4000)
                                                                                      at android.view.View.updateDisplayListIfDirty(View.java:18060)
                                                                                      at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4198)
                                                                                      at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4178)
                                                                                      at android.view.View.updateDisplayListIfDirty(View.java:18028)
                                                                                      at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4198)
                                                                                      at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4178)
                                                                                      at android.view.View.updateDisplayListIfDirty(View.java:18028)
                                                                                      at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4198)
                                                                                      at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4178)
                                                                                      at android.view.View.updateDisplayListIfDirty(View.java:18028)
                                                                                      at android.view.View.draw(View.java:18847)
                                                                                      at android.view.ViewGroup.drawChild(ViewGroup.java:4214)
                                                                                      at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4000)
                                                                                      at android.view.View.updateDisplayListIfDirty(View.java:18060)
                                                                                      at android.view.View.draw(View.java:18847)
                                                                                      at android.view.ViewGroup.drawChild(ViewGroup.java:4214)
                                                                                      at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4000)
                                                                                      at android.view.View.updateDisplayListIfDirty(View.java:18060)
                                                                                      at android.view.View.draw(View.java:18847)
                                                                                      at android.view.ViewGroup.drawChild(ViewGroup.java:4214)
                                                                                      at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4000)
                                                                                      at android.view.View.updateDisplayListIfDirty(View.java:18060)
                                                                                      at android.view.View.draw(View.java:18847)
                                                                                      at android.view.ViewGroup.drawChild(ViewGroup.java:4214)
                                                                                      at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4000)
                                                                                      at android.view.View.updateDisplayListIfDirty(View.java:18060)
                                                                                      at android.view.View.draw(View.java:18847)
                                                                                      at android.view.ViewGroup.drawChild(ViewGroup.java:4214)
                                                                                      at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4000)
                                                                                      at android.view.View.draw(View.java:19122)
                                                                                      at com.android.internal.policy.DecorView.draw(DecorView.java:785)
                                                                                      at android.view.View.updateDisplayListIfDirty(View.java:18069)
                                                                                      at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:643)
                                                                                      at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:649)
                                                                                      at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:757)
                                                                                      at android.view.ViewRootImpl.draw(ViewRootImpl.java:2980)
                                                                                      at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2794)
                                                                                      at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2347)
                                                                                      at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1386)
                                                                                      at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6733)
                                                                                      at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)
                                                                                      at android.view.Choreographer.doCallbacks(Choreographer.java:723)
                                                                                      at android.view.Choreographer.doFrame(Choreographer.java:658)
                                                                                      at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
                                                                                      at android.os.Handler.handleCallback(Handler.java:789)
                                                                                      at android.os.Handler.dispatchMessage(Handler.java:98)
                                                                                      at android.os.Looper.loop(Looper.java:164)
                                                                                      at android.app.ActivityThread.main(ActivityThread.java:6541)
                                                                                      at java.lang.reflect.Method.invoke(Native Method)
                                                                                      at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
08-13 06:44:54.834 21842-21842/com.picart.snapfilter.squareblur E/AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

一、参考 https://blog.csdn.net/primer_programer/article/details/26697037

https://blog.csdn.net/sex_34/article/details/47725707

以上两篇建议新建ImageView，重写onDraw（）

报错： drawBitmap catch some exceptions

二、 https://blog.csdn.net/lchannel/article/details/75102028

这篇建议注释掉onDestroy

三、 https://blog.csdn.net/binbosmile1/article/details/50775926

这篇建议定位使用了已回收图片的地方，直接注释掉

这篇worked，but I didn't locate the error position sucessfully

我怎么找到的呢：找我最近改动的几个java文件，command＋F：recycle，然后注释掉，运行一下，发现确实可以解决这个error。

但是还存在一个问题，我写的listview是很多张图片，在我点击图1，然后点击图2，……，然后点击图6，再返回点击图2时候，肉眼可以看见背景变化过程中有图1的缓存，虽然这个变化过程很快但是我看见了……

出错的在这里
public void recycleDrawable(Drawable drawable) {
		if (drawable instanceof BitmapDrawable) {
			Bitmap bmp = ((BitmapDrawable) drawable).getBitmap();
			if (bmp != null && !bmp.isRecycled()) {
//				bmp.recycle();//必须注释掉
				bmp = null;
                    java.lang.RuntimeException: Canvas: trying to use a recycled bitmap android.graphics.Bitmap@3073cd5                                                                                      at android.g...
				Android的Bitmap和J2ME的Image比较类似。 　　如果我想从resource里读入一个图片，然后在这个图片上draw一点自己的信息，比如文字。
　　再画到屏幕上怎么做呢?
　　J2ME里只要Image.getGraphic() 拿到 Graphic的对象就可以想draw什么就draw什么了。
　　那么Android里怎么实现呢?
　　Java 代码 代码如下:　　Bitmap img = Bitmap.createBitmap(width, height, Config.ARGB_8888);
　　Canvas canvas = new Canvas();
　　canvas.s
 < script src = "lib/Bitmap.js" > < / script >
< script >
var canvas = document . createElement ( "canvas" ) ;
var ctx = canvas . getContext ( "2d" ) ;
var imageData = ctx . getImageData ( 0 , 0 , canvas . width , canvas . height ) ;
var blob = Bitmap . createBlob ( imageData . data , canvas . width , canvas . height ) ;
var img = new Image ( ) ;
img . onload =
				一开始分享的代码是这样的，可以分享给WeChat、QQ、短信。发现在分享完短信在退回界面后，原本的bitmap图片不见了。日志报错trying to use a recycled bitmap。bitmap被回收掉了
if(shareDialog == null) {
            shareDialog = new ShareDialog();
            BitmapDr...
				异常：trying to use a recycled bitmap android.graphics.Bitmap
概意:试图使用已经recycled的Bitmap
一般情况下我们在对Bitmap进行Matrix的各种缩放、平移等处理，然后createBitmap，再对之前的Bitmap进行recycle处理。
Bitmap oldBitmap= BitmapFactory.d...
				java.lang.RuntimeException: Canvas: trying to use a recycled bitmap android.graphics.Bitmap@b66e6ff
                                                                   at android.graphics.Canvas.throwI...
				当你的应用由于加载大量图片出现OOM异常时，肯定会上网搜索关于OOM的文章，并导求相应的解决方案，比如压缩图片大小，或手动回收资源什么的。在这里我们不讨论图片压缩或缓冲这些方法，而是讨论一下手动回收BITMAP时可能出现的问题，亦即Canvas: trying to use a recycled bitmap。
    很容易可以预料到，你必然会遇到并使用如下代码：
				Android UI开发(五)Bitmap和Canvas实例.docxAndroid UI开发(五)Bitmap和Canvas实例.docxAndroid UI开发(五)Bitmap和Canvas实例.docxAndroid UI开发(五)Bitmap和Canvas实例.docxAndroid UI开发(五)Bitmap和Canvas实例.docxAndroid UI开发(五)Bitmap和Canvas实例.docxAndroid UI开发(五)Bitmap和Canvas实例.docxAndroid UI开发(五)Bitmap和Canvas实例.docx
				1.概念区别：
很多网友刚刚开始学习Android平台，对于Drawable、Bitmap、Canvas和Paint它们之间的概念不是很清楚，其实它们除了Drawable外早在Sun的J2ME中就已经出现了，但是在Android平台中，Bitmap、Canvas相关的都有所变化。
首先让我们理解下Android平台中的显示类是View，但是还提供了底层图形类android.graphics，今天所说的这些均为graphics底层图形接口。
Bitmap – 称作位图
一般位图的文件格式后缀为bmp，当然编码器也有很多如RGB565、RGB888。作为一种逐像素的显示对象执行效率高，但是缺
 FATAL EXCEPTION: main
 java.lang.RuntimeException: Canvas: trying to use a recycled bitmap android.graphics.Bitmap@41434a00
				文章目录Glide使用背景使用方式一：into传入ImageView分析1：scaleType=fitXY是否会导致trying to use a recycled bitmap异常？分析2：into传入imageView是否会导致trying to use a recycled bitmap异常？使用方式二：into传入ViewTarget异常原因分析解决方案
Glide导致的RuntimeException: Canvas: trying to use a recycled bitmap android
				Android 大图加载显示
文章目录Android 大图加载显示通过本文你能学到什么？一、ImagerView直接放置一张几十M的图片会崩溃吗？二、如何保证加载大图不发生崩溃？三、Glide设置显示大图是否会发生崩溃四、大图缩放滑动如何实现五、大图缩放和滑动框架的使用六、最后总结一下最开始目录学习的内容：共勉：自强不息，才是生活的样子。
通过本文你能学到什么？
1、普通设置方法设置大图片是否会导致界面崩溃，多大的图片才会导致崩溃
2、如何保证加载大图不发生崩溃
3、Glide设置显示大图是否会发生崩溃
					如何将Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.logo);         Bitmap circleBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);         Canvas canvas = new Canvas(circleBitmap);         Paint paint = new Paint();         paint.setAntiAlias(true);         canvas.drawCircle(bitmap.getWidth() / 2, bitmap.getHeight() / 2,                 Math.min(bitmap.getWidth(), bitmap.getHeight()) / 2, paint);          paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));         canvas.drawBitmap(bitmap, 0, 0, paint);          canvas.drawBitmap(circleBitmap, 0, 0, null);返回的bitmap对象放入imageview
```java
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.logo);
Bitmap circleBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(circleBitmap);
Paint paint = new Paint();
paint.setAntiAlias(true);
canvas.drawCircle(bitmap.getWidth() / 2, bitmap.getHeight() / 2, Math.min(bitmap.getWidth(), bitmap.getHeight()) / 2, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(bitmap, 0, 0, paint);
canvas.drawBitmap(circleBitmap, 0, 0, null);
ImageView imageView = findViewById(R.id.imageView);
imageView.setImageBitmap(circleBitmap);