android - 在通知中使用大图标时出现 java.lang.NoClassDefFoundError

Question

在通知中使用大图标时出现此错误并且应用程序崩溃:

  06-06 19:53:34.688 25207-25207/com.example.hadi.music E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.hadi.music, PID: 25207
    java.lang.NoClassDefFoundError: Failed resolution of: Landroid/graphics/drawable/Icon;
        at com.example.hadi.music.service.MediaPlayerService.buildNotification(MediaPlayerService.java:90)
        at com.example.hadi.music.service.MediaPlayerService.access$100(MediaPlayerService.java:25)
        at com.example.hadi.music.service.MediaPlayerService$1.onPlay(MediaPlayerService.java:126)
        at android.media.session.MediaSession$CallbackMessageHandler.handleMessage(MediaSession.java:1150)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5221)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
     Caused by: java.lang.ClassNotFoundException: Didn't find class "android.graphics.drawable.Icon" on path: DexPathList[[zip file "/data/app/com.example.hadi.music-2/base.apk", zip file "/data/app/com.example.hadi.music-2/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.hadi.music-2/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.hadi.music-2/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.hadi.music-2/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.hadi.music-2/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.hadi.music-2/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.hadi.music-2/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.hadi.music-2/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.hadi.music-2/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.hadi.music-2/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.hadi.music-2/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
        at com.example.hadi.music.service.MediaPlayerService.buildNotification(MediaPlayerService.java:90) 
        at com.example.hadi.music.service.MediaPlayerService.access$100(MediaPlayerService.java:25) 
        at com.example.hadi.music.service.MediaPlayerService$1.onPlay(MediaPlayerService.java:126) 
        at android.media.session.MediaSession$CallbackMessageHandler.handleMessage(MediaSession.java:1150) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:135) 
        at android.app.ActivityThread.main(ActivityThread.java:5221) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at java.lang.reflect.Method.invoke(Method.java:372) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694) 
        Suppressed: java.lang.ClassNotFoundException: android.graphics.drawable.Icon
        at java.lang.Class.classForName(Native Method)
        at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
        at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
                ... 12 more                                                                         

    Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available

我正在使用此方法从 url 加载位图:

.setLargeIcon(Icon.createWithBitmap(utilities.getBitmapFromURL(MusicPlayActivity.base)))


public Bitmap getBitmapFromURL(String strURL) {
        try {
            URL url = new URL(strURL);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setDoInput(true);
            connection.connect();
            InputStream input = connection.getInputStream();
            Bitmap myBitmap = BitmapFactory.decodeStream(input);
            return myBitmap;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }

如何解决这个问题？

Answer 1

谷歌问题跟踪器中也报告了这个问题 here .并根据这个答案here ，可以通过将您的库更新到 API 27 并使用支持库 v27 或更高版本来解决此问题。请回复是否使用此解决。