将位图动态放入小部件时，活页夹事务失败 [英] Failed binder transaction when putting an bitmap dynamically in a widget

问题描述

谁能告诉我活页夹交易失败错误的原因?我可以在 logcat 中看到此错误消息.我在尝试将位图动态放入小部件时遇到此错误...

Can anybody tell me the reason for failed binder transaction error? I can see this error message in logcat. I am getting this error while trying to put an bitmap dynamically in a widget...

推荐答案

这是因为对 RemoteViews 的所有更改都是序列化的(例如 setInt 和 setImageViewBitmap ).位图也被序列化为一个内部包.不幸的是，此捆绑包的大小限制非常小.

This is caused because all the changes to the RemoteViews are serialised (e.g. setInt and setImageViewBitmap ). The bitmaps are also serialised into an internal bundle. Unfortunately this bundle has a very small size limit.

您可以通过以下方式缩小图像大小来解决此问题:

You can solve it by scaling down the image size this way:

 public static Bitmap scaleDownBitmap(Bitmap photo, int newHeight, Context context) {

 final float densityMultiplier = context.getResources().getDisplayMetrics().density;        

 int h= (int) (newHeight*densityMultiplier);
 int w= (int) (h * photo.getWidth()/((double) photo.getHeight()));

 photo=Bitmap.createScaledBitmap(photo, w, h, true);

 return photo;
 }

选择足够小的 newHeight(屏幕上应该占据的每个正方形约 100)并将其用于您的小部件，您的问题将得到解决:)

Choose newHeight to be small enough (~100 for every square it should take on the screen) and use it for your widget, and your problem will be solved :)

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