Bitmap.getConfig()为null的解决方法

报错

java.lang.RuntimeException: Transformation circle crashed with exception.
at com.squareup.picasso.BitmapHunter 3.run(BitmapHunter.java:434)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5111)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at android.graphics.Bitmap.createBitmap(Bitmap.java:809)
at android.graphics.Bitmap.createBitmap(Bitmap.java:786)
at android.graphics.Bitmap.createBitmap(Bitmap.java:753)
at com.aiwue.view.CircleTransform.transform(CircleTransform.java:43)
at com.squareup.picasso.BitmapHunter.applyCustomTransformations(BitmapHunter.java:429)
at com.squareup.picasso.BitmapHunter.hunt(BitmapHunter.java:238)
at com.squareup.picasso.BitmapHunter.run(BitmapHunter.java:159)
at java.util.concurrent.Executors RunnableAdapter.call(Executors.java:422)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:841)
at com.squareup.picasso.Utils$PicassoThread.run(Utils.java:411)

原因

Bitmap source；
Bitmap bitmap = Bitmap.createBitmap(size, size, source.getConfig());
中source.getConfig()有可能为null；

解决办法

Bitmap.Config config = source.getConfig() != null ? source.getConfig() : Bitmap.Config.ARGB_8888;
Bitmap bitmap = Bitmap.createBitmap(size, size, config);
这样就可以避免问题了：）