小编Aal*_*lap的帖子

我在Android崩溃报告中看到以下错误:

android.os.BadParcelableException: ClassNotFoundException when unmarshalling: android.support.v7.widget.Toolbar$SavedState
   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2318)
   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2396)
   at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3974)
   at android.app.ActivityThread.access$900(ActivityThread.java:139)
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1299)
   at android.os.Handler.dispatchMessage(Handler.java:102)
   at android.os.Looper.loop(Looper.java:149)
   at android.app.ActivityThread.main(ActivityThread.java:5257)
   at java.lang.reflect.Method.invokeNative(Method.java)
   at java.lang.reflect.Method.invoke(Method.java:515)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:609)
   at dalvik.system.NativeStart.main(NativeStart.java)
Caused by: android.os.BadParcelableException: ClassNotFoundException when unmarshalling: android.support.v7.widget.Toolbar$SavedState
   at android.os.Parcel.readParcelableCreator(Parcel.java:2154)
   at android.os.Parcel.readParcelable(Parcel.java:2104)
   at android.os.Parcel.readValue(Parcel.java:2020)
   at android.os.Parcel.readSparseArrayInternal(Parcel.java:2382)
   at android.os.Parcel.readSparseArray(Parcel.java:1742)
   at android.os.Parcel.readValue(Parcel.java:2077)
   at android.os.Parcel.readArrayMapInternal(Parcel.java:2321)
   at android.os.Bundle.unparcel(Bundle.java:249)
   at android.os.Bundle.getSparseParcelableArray(Bundle.java:1273)
   at com.android.internal.policy.impl.PhoneWindow.restoreHierarchyState(PhoneWindow.java:1744)
   at android.app.Activity.onRestoreInstanceState(Activity.java:1017)
   at android.app.Activity.performRestoreInstanceState(Activity.java:989)
   at android.app.Instrumentation.callActivityOnRestoreInstanceState(Instrumentation.java:1138)
   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2284)
   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2396)
   at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3974)
   at android.app.ActivityThread.access$900(ActivityThread.java:139)
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1299)
   at android.os.Handler.dispatchMessage(Handler.java:102)
   at android.os.Looper.loop(Looper.java:149)
   at …

我想将4种不同分辨率的4种不同视频合并为1种可在Android中播放的视频.我使用https://github.com/guardianproject/android-ffmpeg在android上移植ffmpeg

所以我有这4种不同类型的视频1)

./ffmpeg -i 1.mp4 
Video: h264 (High), yuv420p, 1920x1080, 16959 kb/s, 29.85 fps, 90k tbr, 90k tbn, 180k tbc
Audio: aac, 48000 Hz, stereo, s16, 106 kb/s

2)

ffmpeg -i 2.mp4
Video: h264 (Constrained Baseline), yuv420p, 640x480, 3102 kb/s, 29.99 fps, 90k tbr, 90k tbn, 180k tbc
Audio: aac, 48000 Hz, stereo, s16, 93 kb/s

3)

ffmpeg -i 3.3gp
Video: h263, yuv420p, 1408x1152 [PAR 12:11 DAR 4:3], 2920 kb/s, 15 fps, 15 tbr, 15360 tbn, 29.97 tbc …

使用Android设计支持库中的浮动操作按钮是否有任何简单的浮动操作菜单实现？

我最近阅读了有关GcmTaskService和GcmNetworkManager来安排任务的信息.我的用例是典型的SyncAdapter,我需要定期与我的服务器同步一些数据,我目前使用SyncAdapter.我的问题是GcmTaskService和SyncAdapter之间有什么区别.何时使用GcmTaskService vs何时使用SyncAdapter？