privatefuninitLoaderManage(){mImagesItems.clear()//先清理一次varinstance=getInstance(this)instance.initLoader(LOADER_ID,null,object:LoaderCallbacks<Cursor>{//获取图片数据overridefunonCreateLoader(id:Int,args:Bundle?):Loader<Cursor>{if(id==LOADER_ID){returnCursorLoader(this@SelectImageActivity,MediaStore.Images.Media.EXTERNAL_CONTENT_URI,arrayOf("_data,_display_name,date_added"),null,null,"date_addedDESC")}returnnull!!}overridefunonLoadFinished(loader:Loader<Cursor>,data:Cursor?){//获取完成if(data!=null){valcolumnNames=data.columnNameswhile(data.moveToNext()){//在这里获取链接mImagesItems.add(ImageItem(data.getString(0),data.getString(1),data.getLong(2)))}}data!!.close()for(imageinmImagesItems){Log.d(TAG,image.toString())}}overridefunonLoaderReset(loader:Loader<Cursor>){}})}

2020-05-0419:49:13.68913062-13062/?I/zygote64:Late-enabling-Xcheck:jni2020-05-0419:49:13.81913062-13062/com.example.retrofitpracticeD/ActivityThread:ActivityThread,attachApplication2020-05-0419:49:13.88313062-13062/com.example.retrofitpracticeD/HwFLClassLoader:getusedfeaturelist:/feature/used-listfailed!2020-05-0419:49:13.88313062-13062/com.example.retrofitpracticeD/HwFLClassLoader:USE_FEATURE_LISThadnotinit! 2020-05-0419:49:13.92313062-13092/com.example.retrofitpracticeI/HwApiCacheMangerEx:apicachemCurPackageName=com.example.retrofitpracticeuptimes=10493594052020-05-0419:49:13.92513062-13092/com.example.retrofitpracticeI/HwApiCacheMangerEx:apicacheoUidnull2020-05-0419:49:13.92613062-13092/com.example.retrofitpracticeI/HwApiCacheMangerEx:apicachevolumesnull2020-05-0419:49:13.95813062-13092/com.example.retrofitpracticeI/HwApiCacheMangerEx:apicachepath=/storage/emulated/0state=mountedkey=com.example.retrofitpractice#10131#2562020-05-0419:49:13.96213062-13092/com.example.retrofitpracticeI/HwApiCacheMangerEx:apicacheoUid101312020-05-0419:49:13.96213062-13092/com.example.retrofitpracticeI/HwApiCacheMangerEx:apicachevolumesnull2020-05-0419:49:13.96613062-13092/com.example.retrofitpracticeI/HwApiCacheMangerEx:apicachepath=/storage/emulated/0state=mountedkey=com.example.retrofitpractice#10131#02020-05-0419:49:13.96713062-13092/com.example.retrofitpracticeI/HwApiCacheMangerEx:apicacheasyncreadbeginpackageName=com.example.retrofitpracticeuserid=02020-05-0419:49:13.96713062-13092/com.example.retrofitpracticeI/HwApiCacheMangerEx:apicachepinull2020-05-0419:49:13.96913062-13092/com.example.retrofitpracticeI/HwApiCacheMangerEx:apicachepinull2020-05-0419:49:13.97213062-13092/com.example.retrofitpracticeI/HwApiCacheMangerEx:apicachepinull2020-05-0419:49:13.97613062-13092/com.example.retrofitpracticeI/HwApiCacheMangerEx:apicacheoUidnull2020-05-0419:49:13.97613062-13092/com.example.retrofitpracticeI/HwApiCacheMangerEx:apicacheasyncreadfinishedpackageName=com.example.retrofitpracticeuserid=0totalus=97702020-05-0419:49:14.08213062-13062/com.example.retrofitpracticeW/zygote64:Failuretoverifydexfile'/data/app/com.example.retrofitpractice-3GfAziQ2ZPv6YXTYbobCmA==/base.apk':Badmethodhandletype72020-05-0419:49:14.10413062-13062/com.example.retrofitpracticeI/HwApiCacheMangerEx:apicachepinull2020-05-0419:49:14.11013062-13062/com.example.retrofitpracticeE/Minikin:Couldnotgetcmaptablesize!2020-05-0419:49:14.13113062-13062/com.example.retrofitpracticeD/AndroidRuntime:ShuttingdownVM2020-05-0419:49:14.13213062-13092/com.example.retrofitpracticeE/MemoryLeakMonitorManager:MemoryLeakMonitor.jarisnotexist!2020-05-0419:49:14.14213062-13062/com.example.retrofitpracticeE/AndroidRuntime:FATALEXCEPTION:main  Process:com.example.retrofitpractice,PID:13062  java.lang.RuntimeException:UnabletoinstantiateactivityComponentInfo{com.example.retrofitpractice/com.example.retrofitpractice.MainActivity}:java.lang.ClassNotFoundException:Didn'tfindclass"com.example.retrofitpractice.MainActivity"onpath:DexPathList[[zipfile"/data/app/com.example.retrofitpractice-3GfAziQ2ZPv6YXTYbobCmA==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.retrofitpractice-3GfAziQ2ZPv6YXTYbobCmA==/lib/arm64,/system/lib64,/vendor/lib64,/product/lib64]]    atandroid.app.ActivityThread.performLaunchActivity(ActivityThread.java:3201)    atandroid.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3411)    atandroid.app.ActivityThread.-wrap12(UnknownSource:0)    atandroid.app.ActivityThread$H.handleMessage(ActivityThread.java:1994)    atandroid.os.Handler.dispatchMessage(Handler.java:108)    atandroid.os.Looper.loop(Looper.java:166)    atandroid.app.ActivityThread.main(ActivityThread.java:7529)    atjava.lang.reflect.Method.invoke(NativeMethod)    atcom.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:245)    atcom.android.internal.os.ZygoteInit.main(ZygoteInit.java:921)   Causedby:java.lang.ClassNotFoundException:Didn'tfindclass"com.example.retrofitpractice.MainActivity"onpath:DexPathList[[zipfile"/data/app/com.example.retrofitpractice-3GfAziQ2ZPv6YXTYbobCmA==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.retrofitpractice-3GfAziQ2ZPv6YXTYbobCmA==/lib/arm64,/system/lib64,/vendor/lib64,/product/lib64]]    atdalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:93)    atjava.lang.ClassLoader.loadClass(ClassLoader.java:379)    atjava.lang.ClassLoader.loadClass(ClassLoader.java:312)    atandroid.app.Instrumentation.newActivity(Instrumentation.java:1178)    atandroid.app.ActivityThread.performLaunchActivity(ActivityThread.java:3191)    atandroid.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3411)     atandroid.app.ActivityThread.-wrap12(UnknownSource:0)     atandroid.app.ActivityThread$H.handleMessage(ActivityThread.java:1994)     atandroid.os.Handler.dispatchMessage(Handler.java:108)     atandroid.os.Looper.loop(Looper.java:166)     atandroid.app.ActivityThread.main(ActivityThread.java:7529)     atjava.lang.reflect.Method.invoke(NativeMethod)     atcom.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:245)     atcom.android.internal.os.ZygoteInit.main(ZygoteInit.java:921)   Suppressed:java.io.IOException:Failedtoopendexfilesfrom/data/app/com.example.retrofitpractice-3GfAziQ2ZPv6YXTYbobCmA==/base.apkbecause:Failuretoverifydexfile'/data/app/com.example.retrofitpractice-3GfAziQ2ZPv6YXTYbobCmA==/base.apk':Badmethodhandletype7    atdalvik.system.DexFile.openDexFileNative(NativeMethod)    atdalvik.system.DexFile.openDexFile(DexFile.java:353)    atdalvik.system.DexFile.<init>(DexFile.java:100)    atdalvik.system.DexFile.<init>(DexFile.java:74)    atdalvik.system.DexPathList.loadDexFile(DexPathList.java:374)    atdalvik.system.DexPathList.makeDexElements(DexPathList.java:337)    atdalvik.system.DexPathList.<init>(DexPathList.java:157)    atdalvik.system.BaseDexClassLoader.<init>(BaseDexClassLoader.java:65)    atdalvik.system.PathClassLoader.<init>(PathClassLoader.java:64)    atcom.android.internal.os.PathClassLoaderFactory.createClassLoader(PathClassLoaderFactory.java:43)    atandroid.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:75)    atandroid.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:38)    atandroid.app.LoadedApk.createOrUpdateClassLoaderLocked(LoadedApk.java:719)    atandroid.app.LoadedApk.getClassLoader(LoadedApk.java:752)    atandroid.app.LoadedApk.getResources(LoadedApk.java:1005)    atandroid.app.ContextImpl.createAppContext(ContextImpl.java:2489)    atandroid.app.ActivityThread.handleBindApplication(ActivityThread.java:6497)    atandroid.app.ActivityThread.-wrap2(UnknownSource:0)    atandroid.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)    ...6more2020-05-0419:49:14.19513062-13062/com.example.retrofitpracticeI/Process:Sendingsignal.PID:13062SIG:9强调一下哈，MainActivity创建项目之后就自动生成了，Manifest中也有的，然后什么都不动跑过一次，APP不会崩掉，加了Retrofit之后崩掉了

我是真的要崩溃了。求求好心的有空的大佬或者跟我经历相似已经工作的前辈们给我一点。指导意见。我真的是有心无力啊。真的好迷茫。没方向

AppCompatDelegate.MODE_NIGHT_NO)来实现日夜间模式的切换的，现在这种解决方式activity不仅会recreate导致一秒钟左右的黑屏之后才能实现切换，更要命的是如果快速点击切换就会导致崩溃

编译成功之后先安装到手机看看运行情况，是否会崩溃等等检查。能看到我们的log正常输入，且App没有崩溃。

),paint)//获取DoodleView的涂鸦集合并绘制到画布上mDoodleView.allItem.forEach{it.draw(canvas)}涂鸦完成后，调用save方法后再次涂鸦时导致崩溃的问题

升级了ktx,appcompat等组件后居然直接崩溃了。