Java OutOfMemoryError 使用 Picasso 图像

Question

我正在尝试将图像加载到 ImageView 中并收到 OutOfMemoryError。图像根据 ViewPager 中的特定 View 动态显示。但是，在我继续滚动浏览 ViewPager 之后，图像最终无法加载并导致 OutOfMemoryError。

请注意，我在 ViewPager 中有 4 个 View ，应用程序似乎在 View 2 上崩溃。我猜图像的尺寸太大了，但我的印象是 Picasso 会相应地处理:

picasso 代码:

Picasso.with(getActivity())
    .load(mImageURL)
    .fit()
    .memoryPolicy(MemoryPolicy.NO_CACHE, MemoryPolicy.NO_CACHE)
    .into((ImageView) rootView.findViewById(R.id.comments_image));

XML

<ImageView
    android:id="@+id/comments_image"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight=".525"
    android:background="@color/black">
</ImageView>

错误

java.lang.OutOfMemoryError: Failed to allocate a 5074572 byte allocation with 132096 free bytes and 129KB until OOM
     at dalvik.system.VMRuntime.newNonMovableArray(Native Method)
     at android.graphics.Bitmap.nativeCreate(Native Method)
     at android.graphics.Bitmap.createBitmap(Bitmap.java:812)
     at android.graphics.Bitmap.createBitmap(Bitmap.java:789)
     at android.graphics.Bitmap.createBitmap(Bitmap.java:756)
     at android.graphics.drawable.VectorDrawable$VectorDrawableState.createCachedBitmapIfNeeded(VectorDrawable.java:713)
     at android.graphics.drawable.VectorDrawable.draw(VectorDrawable.java:280)
     at com.squareup.picasso.PicassoDrawable.draw(PicassoDrawable.java:105)
     at android.widget.ImageView.onDraw(ImageView.java:1176)
     at android.view.View.draw(View.java:15231)
     at android.view.View.updateDisplayListIfDirty(View.java:14167)
     at android.view.View.getDisplayList(View.java:14189)
     at android.view.View.draw(View.java:14959)
     at android.view.ViewGroup.drawChild(ViewGroup.java:3405)
     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3198)
     at android.view.View.draw(View.java:15234)
     at android.view.View.updateDisplayListIfDirty(View.java:14167)
     at android.view.View.getDisplayList(View.java:14189)
     at android.view.View.draw(View.java:14959)
     at android.view.ViewGroup.drawChild(ViewGroup.java:3405)
     at android.support.design.widget.CoordinatorLayout.drawChild(CoordinatorLayout.java:1131)
     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3198)
     at android.view.View.updateDisplayListIfDirty(View.java:14162)
     at android.view.View.getDisplayList(View.java:14189)
     at android.view.View.draw(View.java:14959)
     at android.view.ViewGroup.drawChild(ViewGroup.java:3405)
     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3198)
     at android.view.View.draw(View.java:15234)
     at android.support.v4.view.ViewPager.draw(ViewPager.java:2341)
     at android.view.View.updateDisplayListIfDirty(View.java:14167)
     at android.view.View.getDisplayList(View.java:14189)
     at android.view.View.draw(View.java:14959)
     at android.view.ViewGroup.drawChild(ViewGroup.java:3405)
     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3198)
     at android.view.View.updateDisplayListIfDirty(View.java:14162)
     at android.view.View.getDisplayList(View.java:14189)
     at android.view.View.draw(View.java:14959)
     at android.view.ViewGroup.drawChild(ViewGroup.java:3405)
     at android.support.v4.widget.DrawerLayout.drawChild(DrawerLayout.java:1373)
     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3198)
     at android.view.View.updateDisplayListIfDirty(View.java:14162)
     at android.view.View.getDisplayList(View.java:14189)
     at android.view.View.draw(View.java:14959)
     at android.view.ViewGroup.drawChild(ViewGroup.java:3405)
     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3198)
     at android.view.View.updateDisplayListIfDirty(View.java:14162)
     at android.view.View.getDisplayList(View.java:14189)
     at android.view.View.draw(View.java:14959)
     at android.view.ViewGroup.drawChild(ViewGroup.java:3405)
     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3198)
     at android.view.View.updateDisplayListIfDirty(View.java:14162)
     at android.view.View.getDisplayList(View.java:14189)
     at android.view.View.draw(View.java:14959)
     at android.view.ViewGroup.drawChild(ViewGroup.java:3405)
     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3198)
     at android.view.View.updateDisplayListIfDirty(View.java:14162)
     at android.view.View.getDisplayList(View.java:14189)
     at android.view.View.draw(View.java:14959)
     at android.view.ViewGroup.drawChild(ViewGroup.java:3405)
     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3198)
     at android.view.View.updateDisplayListIfDirty(View.java:14162)
     at android.view.View.getDisplayList(View.java:14189)
     at android.view.View.draw(View.java:14959)
     at android.view.ViewGroup.drawChild(ViewGroup.java:3405)
     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3198)
     at android.view.View.draw(View.java:15234)
     at android.widget.FrameLayout.draw(F

Answer 1

我建议你使用Glide ，因为它被设计为在默认情况下在低成本(和最差的硬件)设备上运行良好。

Picasso 和 Glide 的一个很大的区别是 Glide 的默认格式是 RGB_565 而 Picasso 是 ARGB_8888。正如您在下面看到的，完成相同的工作，它比 Picasso 节省 50% 的内存。

Memory cost

不过，如果您不想更改您的库，您可以尝试使用 .resize(int, int) 方法在 Picasso 的构建器上调整图像大小。