将位图动态放入小部件时失败的活页夹事务

Failed binder transaction when putting an bitmap dynamically in a widget(将位图动态放入小部件时失败的活页夹事务)

问题描述

谁能告诉我失败的活页夹交易错误的原因?我可以在 logcat 中看到此错误消息.尝试将位图动态放入小部件时出现此错误...

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 ).位图也被序列化成一个内部包.不幸的是，这个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.

您可以通过这种方式缩小图像大小来解决它:

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(屏幕上的每个正方形大约为 100)并将它用于您的小部件，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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