如何解决的OutOfMemoryError在android系统？ [英] how to solve OutOfMemoryError in android?

问题描述

我有ppared节数可绘制animations.when应用$ P $推出的第一个动画将start.i有两个按钮（Next和previous）具有相同的activity.wh​​en我点击下一步按钮我有一样例外

I have prepared no.of drawable animations.when application launch first animation will be start.i have two buttons(next and previous) with same activity.when i click on next button i got exception like,

 java.lang.OutOfMemoryError: bitmap size exceeds VM budget

我的code是，

My code is,

有关从绘制获得绘制动画

For getting drawable animations from drawable,

private void getAnimationForLetters(int mAnim) {
        // TODO Auto-generated method stub
        String anim = "capital_anim_" + new Integer(mAnim).toString();

        final int resID = getApplicationContext().getResources().getIdentifier(
                anim, "drawable", "my-package-name");
        mImgLetter.clearAnimation();
        mImgLetter.setBackgroundResource(resID);
        mImgLetter.post(new Runnable() {

            public void run() {
                loadingAnimation = (AnimationDrawable) mImgLetter
                        .getBackground();
                loadingAnimation.start();
            }
        });

    }

我的下一个按钮code是，

my next button code is,

case R.id.btnNext_:
 unbindDrawables(findViewById(R.id.imgLetter));
mLetterNum=mLetterNum+1;
getAnimationForLetters(mLetterNum);

我undind绘制方法code是，

my undind drawable method code is,

private void unbindDrawables(View view) {
        if (view.getBackground() != null) {
            view.getBackground().setCallback(null);
        }
        if (view instanceof ViewGroup) {
            for (int i = 0; i < ((ViewGroup) view).getChildCount(); i++) {
                unbindDrawables(((ViewGroup) view).getChildAt(i));
            }
            ((ViewGroup) view).removeAllViews();
        }
    }

终于，我得到异常 java.lang.OutOfMemoryError：位图的大小超过VM预算
这正显示出这里的异常 mImgLetter.setBackgroundResource（渣油）;
请帮我。

我已经加入以下code清除，

I have added following code to clear,

loadingAnimation.stop();
        for (int i = 0; i < loadingAnimation.getNumberOfFrames(); ++i){
            Drawable frame = loadingAnimation.getFrame(i);
            if (frame instanceof BitmapDrawable) {
                ((BitmapDrawable)frame).getBitmap().recycle();
            }
            frame.setCallback(null);
        }
        loadingAnimation.setCallback(null);

这是工作的罚款，仅次于或下一个动画转移到秒的动画，第二次previous.First时候按一下，如果我在previous按钮点击我有一样例外，

It is working fine for only next or previous.First time click on next animation move to second animation,second time if i click on previous button i got exception like,

Canvas: trying to use a recycled bitmap android.graphics.Bitmap

请帮我。

推荐答案

准确 - 系统知道何时收集垃圾，因此调用不中至少帮助

exactly - the system knows when to collect garbage, so calling that doesn't help in the least.

您必须真的管理你的应用程序的内存。 290x330可能似乎不是很多，但如果你使用的全RGBA这是每像素4个字节，图像变成380K。如果你有几个这样你会耗尽内存。大多数Android设备不像电脑 - 他们已经相当有限的内存。有的只有16M或24M运行的一切，包括操作系统和任何其他应用程序的用户可能会同时运行。

You have to really really manage your apps memory. 290x330 may not seem like much, but if you're using full RGBA that's 4 bytes per pixel and your image turns into 380K. If you have several of these you're going to run out of memory. Most Android devices are not like PCs - they have rather limited memory. Some have only 16M or 24M to run everything, including the OS and any other apps the user might be running concurrently.

您可以尝试包装你的日常用来加载的try / catch资源

You might try wrapping your routine to load resources with try/catch

 While( ! success ) {
   try {
       // load resources
  }  catch (OutOfMemoryError E) { 
       // do something to use less memory and try again
  }
 }

这篇关于如何解决的OutOfMemoryError在android系统？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！