我正在寻找一个包含动画可绘制的 ImageButton,更准确地说是进度条微调器的重复补间动画(例如为此存在的视图/小部件)。
在 xml 中,我为活动布局中的 ImageButton 指定了这个:
<ImageButton android:id="@+id/i_back_cover" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:scaleType="centerInside"
android:gravity="center" android:layout_weight="1" android:adjustViewBounds="true"
android:src="@anim/progress_large">
</ImageButton>
“progress_large”动画在 res/anim/ 中:
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/linear_interpolator">
<rotate
android:drawable="@drawable/spinner_black_76"
android:pivotX="50%"
android:pivotY="50%"
android:fromDegrees="0"
android:toDegrees="350"
android:duration="1200" />
</set>
我现在设置toDegrees
为 350,以确保它会旋转。spinner_black_76
只是一个图像。
当我打开具有此布局的活动时,应用程序在显示之前崩溃。
奇怪的是,日志中没有实际的堆栈跟踪,如果我是对的,只是一个被杀死的虚拟机(我自己几乎不敢相信):
10-07 21:16:18.467: INFO/ActivityManager(59): Starting activity: Intent { act=android.intent.action.EDIT dat=content://net.lp.collectionista.products/items/book/1 cmp=net.lp.collectionista/.ui.activities.items.book.BookItemEditWindow }
10-07 21:16:18.687: DEBUG/AndroidRuntime(636): Shutting down VM
10-07 21:16:18.687: WARN/dalvikvm(636): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
10-07 21:16:18.687: DEBUG/FlurryAgent(636): Ending session
10-07 21:16:18.977: DEBUG/dalvikvm(636): GC_FOR_MALLOC freed 3876 objects / 597200 bytes in 98ms
10-07 21:16:19.007: WARN/ActivityManager(59): Force finishing activity net.lp.collectionista/.ui.activities.items.book.BookItemEditWindow
10-07 21:16:19.016: WARN/ActivityManager(59): Force finishing activity net.lp.collectionista/.ui.activities.collections.book.BookCollectionViewWindow
10-07 21:16:19.507: WARN/ActivityManager(59): Activity pause timeout for HistoryRecord{43fec528 net.lp.collectionista/.ui.activities.items.book.BookItemEditWindow}
10-07 21:16:21.437: INFO/Process(636): Sending signal. PID: 636 SIG: 9
10-07 21:16:21.487: INFO/ActivityManager(59): Process net.lp.collectionista (pid 636) has died.
10-07 21:16:21.517: INFO/WindowManager(59): WIN DEATH: Window{4400f330 net.lp.collectionista/net.lp.collectionista.ui.activities.CollectionsListWindow paused=false}
10-07 21:16:21.517: INFO/WindowManager(59): WIN DEATH: Window{43fc89d0 net.lp.collectionista/net.lp.collectionista.ui.activities.collections.book.BookCollectionViewWindow paused=true}
10-07 21:16:21.667: INFO/UsageStats(59): Unexpected resume of com.android.launcher while already resumed in net.lp.collectionista
10-07 21:16:21.727: WARN/InputManagerService(59): Got RemoteException sending setActive(false) notification to pid 636 uid 10034
10-07 21:16:27.237: DEBUG/dalvikvm(278): GC_EXPLICIT freed 32 objects / 1616 bytes in 81ms
10-07 21:18:14.047: DEBUG/AndroidRuntime(654): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<
在这种情况下我做错了什么?或者在按钮顶部获得进度条圆形微调器的更好方法是什么?