Android应用程序每次创建折线时都会崩溃

Question

每当它尝试创建线条时，它都会崩溃。我想使用PathOverlay，但它已被弃用。我想创建一条线。

public void drawLine(){ 
    List<GeoPoint> track = new ArrayList<>(); 
    track.add(new GeoPoint(14.4889,121.0325)); 
    track.add(new GeoPoint(14.4906,121.0353)); 

    Polyline roadOverlay = new Polyline(map.getContext()); 
    roadOverlay.setPoints(track); 
    map.getOverlays().add(roadOverlay); 
    map.invalidate(); 
} 

摇篮控制台

执行的任务 '：应用程序：validateSigningDebug'（上最新检查了0.0秒），因为： 任务还没有宣布任何输出。 ：app：validateSigningDebug（线程[Daemon worker Thread 2,5，main]）已完成。花了0.022秒。 ：app：packageDebug（线程[Daemon worker Thread 2,5，main]）开始。 ：app：packageDebug 由于： 输入文件C：\ Users \ hp \ AndroidStudioProjects \ PATHS \ app \ build \ intermediates \ transforms \应用程序执行任务'：app：packageDebug'（最新检查花费了0.067秒） dex \ debug \ folders \ 1000 \ 5 \ slice_3 \ classes.dex已更改。 ：app：packageDebug（线程[Daemon worker Thread 2,5，main]）已完成。花了6.165秒。 ：app：buildInfoGeneratorDebug（线程[Daemon worker Thread 2,5，main]）启动。 ：app：buildInfoGeneratorDebug 由于： 任务未声明任何输出，因此执行任务'：app：buildInfoGeneratorDebug'（最新检查花费0.0秒）。 ：app：buildInfoGeneratorDebug（线程[守护进程工作线程2,5，主]）完成。花了0.043秒。 ：app：compileDebugSources（Thread [Daemon worker Thread 2,5，main]）开始。 ：app：compileDebugSources 正在跳过任务'：app：compileDebugSources'，因为它没有任何操作。 ：app：compileDebugSources（Thread [Daemon worker Thread 2,5，main]）已完成。花了0.001秒。 ：app：assembleDebug（线程[Daemon worker Thread 2,5，main]）已启动。 ：app：assembleDebug 跳过任务'：app：assembleDebug'，因为它没有任何操作。 ：app：assembleDebug（Thread [Daemon worker Thread 2,5，main]）已完成。花了0.001秒。

我认为这会有帮助吗？我的osmdroid瓷砖在我的手机存储：

$ adb shell am start -n 
"com.example.mariel.paths/com.example.mariel.paths.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER 
Client not ready yet..Connected to process 20345 on device lge-lg_x155-YL7PVWCE99999999 
V/ActivityThread: ActivityRecord{1795043f [email protected] {com.example.mariel.paths/com.example.mariel.paths.MainActivity}}: [email protected], appName=com.example.mariel.paths, pkg=com.example.mariel.paths, comp={com.example.mariel.paths/com.example.mariel.paths.MainActivity}, dir=/data/app/com.example.mariel.paths-1/base.apk 
W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable 
W/art: Suspending all threads took: 6.790ms 
I/OsmDroid: Using tile source: Mapnik 
D/Environment: getStorageVolume, volume:StorageVolume: 
        mStorageId=65537 mPath=/storage/emulated/0 mDescriptionId=17040786 
        mPrimary=true mRemovable=false mEmulated=true mMtpReserveSpace=10 
        mAllowMassStorage=false mMaxFileSize=0 mOwner=UserHandle{0} mUuid=null 
        mUserLabel=null mState=mounted 
D/Environment: getStorageVolume, volume:StorageVolume: 
        mStorageId=131073 mPath=/storage/sdcard1 mDescriptionId=17040784 
        mPrimary=false mRemovable=true mEmulated=false mMtpReserveSpace=0 
        mAllowMassStorage=true mMaxFileSize=0 mOwner=null mUuid=0000-CCCC 
        mUserLabel=KFAT1 mState=mounted 
D/Environment: getStorageVolume, volume:StorageVolume: 
        mStorageId=196609 mPath=/storage/usbotg mDescriptionId=17040787 
        mPrimary=false mRemovable=true mEmulated=false mMtpReserveSpace=0 
        mAllowMassStorage=false mMaxFileSize=0 mOwner=null mUuid=null 
        mUserLabel=null mState=removed 
I/OsmDroid: sdcard state: mounted 
D/Environment: getStorageVolume, volume:StorageVolume: 
        mStorageId=65537 mPath=/storage/emulated/0 mDescriptionId=17040786 
        mPrimary=true mRemovable=false mEmulated=true mMtpReserveSpace=10 
        mAllowMassStorage=false mMaxFileSize=0 mOwner=UserHandle{0} mUuid=null 
        mUserLabel=null mState=mounted 
D/Environment: getStorageVolume, volume:StorageVolume: 
        mStorageId=131073 mPath=/storage/sdcard1 mDescriptionId=17040784 
        mPrimary=false mRemovable=true mEmulated=false mMtpReserveSpace=0 
        mAllowMassStorage=true mMaxFileSize=0 mOwner=null mUuid=0000-CCCC 
        mUserLabel=KFAT1 mState=mounted 
D/Environment: getStorageVolume, volume:StorageVolume: 
        mStorageId=196609 mPath=/storage/usbotg mDescriptionId=17040787 
        mPrimary=false mRemovable=true mEmulated=false mMtpReserveSpace=0 
        mAllowMassStorage=false mMaxFileSize=0 mOwner=null mUuid=null 
        mUserLabel=null mState=removed 
I/OsmDroid: sdcard state: mounted 
D/Environment: getStorageVolume, volume:StorageVolume: 
        mStorageId=65537 mPath=/storage/emulated/0 mDescriptionId=17040786 
        mPrimary=true mRemovable=false mEmulated=true mMtpReserveSpace=10 
        mAllowMassStorage=false mMaxFileSize=0 mOwner=UserHandle{0} mUuid=null 
        mUserLabel=null mState=mounted 
D/Environment: getStorageVolume, volume:StorageVolume: 
        mStorageId=131073 mPath=/storage/sdcard1 mDescriptionId=17040784 
        mPrimary=false mRemovable=true mEmulated=false mMtpReserveSpace=0 
        mAllowMassStorage=true mMaxFileSize=0 mOwner=null mUuid=0000-CCCC 
        mUserLabel=KFAT1 mState=mounted 
D/Environment: getStorageVolume, volume:StorageVolume: 
        mStorageId=196609 mPath=/storage/usbotg mDescriptionId=17040787 
        mPrimary=false mRemovable=true mEmulated=false mMtpReserveSpace=0 
        mAllowMassStorage=false mMaxFileSize=0 mOwner=null mUuid=null 
        mUserLabel=null mState=removed 
I/OsmDroid: sdcard state: mounted 
I/art: Background sticky concurrent mark sweep GC freed 2440(204KB) AllocSpace objects, 0(0B) LOS objects, 17% free, 1462KB/1770KB, paused 5.950ms total 21.482ms 
D/BONUSPACK: OSRMRoadManager.getRoads:http://router.project-osrm.org/route/v1/driving/121.0325,14.4889;121.03529999999999,14.490599999999999?alternatives=false&overview=full&steps=true 
D/libc-netbsd: [getaddrinfo]: hostname=router.project-osrm.org; servname=(null); cache_mode=(null), netid=0; mark=0 
D/libc-netbsd: [getaddrinfo]: ai_addrlen=0; ai_canonname=(null); ai_flags=4; ai_family=0 
D/ActivityThread: ACT-LAUNCH_ACTIVITY handled : 0/ActivityRecord{1795043f [email protected] {com.example.mariel.paths/com.example.mariel.paths.MainActivity}} 
D/ActivityThread: ACT-PAUSE_ACTIVITY_FINISHING handled : 0/[email protected] 
W/art: Suspending all threads took: 7.461ms 
D/ActivityThread: ACT-DESTROY_ACTIVITY handled : 1/[email protected] 
W/art: Suspending all threads took: 7.023ms 

Answer 1

尝试删除map.invalidate（）; ..我猜它不需要onCreate作为视图将在onCreate存在后作出。