使用Back4app解析登錄屏幕

Question

我正在構建一個應用程序，它使用解析來使用back4app系統進行登錄。

檢查了所有的代碼及其沒有錯誤，但是當我在模擬器上運行應用程序時，它確實啓動，並且在日誌cat文件中彈出以下消息：有人能幫助我瞭解錯誤。

04-04 13:32:38.355 3170-3170/com.airrocketapps.airrocketapps.fishermanspics 
E/AndroidRuntime: FATAL EXCEPTION: main 

Process: com.airrocketapps.airrocketapps.fishermanspics, PID: 3170 
                          java.lang.NoClassDefFoundError: Failed resolution of: Lbolts/Task; 
at com.parse.Parse.initialize(Parse.java:422) at com.airrocketapps.airrocketapps.fishermanspics.MainActivity.onCreate(MainActivity.java:128) 
at android.app.Activity.performCreate(Activity.java:5990) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) 
at android.app.ActivityThread.access$800(ActivityThread.java:151) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:135) 
at android.app.ActivityThread.main(ActivityThread.java:5254) 
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:903) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 
Caused by: java.lang.ClassNotFoundException: Didn't find class "bolts.Task" 
on path: DexPathList[[zip file 
"/data/app/com.airrocketapps.airrocketapps.fishermanspics-1/base.apk", zip 
file "/data/app/com.airrocketapps.airrocketapps.fishermanspics- 
1/split_lib_dependencies_apk.apk", zip file 
"/data/app/com.airrocketapps.airrocketapps.fishermanspics-                           
1/split_lib_slice_0_apk.apk", zip file 
"/data/app/com.airrocketapps.airrocketapps.fishermanspics- 
1/split_lib_slice_1_apk.apk", zip file 
"/data/app/com.airrocketapps.airrocketapps.fishermanspics-  
1/split_lib_slice_2_apk.apk", zip file 
"/data/app/com.airrocketapps.airrocketapps.fishermanspics- 
1/split_lib_slice_3_apk.apk", zip file 
"/data/app/com.airrocketapps.airrocketapps.fishermanspics- 
1/split_lib_slice_4_apk.apk", zip file 
"/data/app/com.airrocketapps.airrocketapps.fishermanspics- 
1/split_lib_slice_5_apk.apk", zip file " 
"/data/app/com.airrocketapps.airrocketapps.fishermanspics- 
1/split_lib_slice_6_apk.apk", zip file 
"/data/app/com.airrocketapps.airrocketapps.fishermanspics- 
1/split_lib_slice_7_apk.apk", zip file 
"/data/app/com.airrocketapps.airrocketapps.fishermanspics- 
1/split_lib_slice_8_apk.apk", zip file 
"/data/app/com.airrocketapps.airrocketapps.fishermanspics- 
1/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.parse.Parse.initialize(Parse.java:422)  
at com.airrocketapps.airrocketapps.fishermanspics.MainActivity.onCreate(MainActivity.java:128)  
at android.app.Activity.performCreate(Activity.java:5990)  
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)  
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)  
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)  
at android.app.ActivityThread.access$800(ActivityThread.java:151)  
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)  
at android.os.Handler.dispatchMessage(Handler.java:102)  
at android.os.Looper.loop(Looper.java:135)  
at android.app.ActivityThread.main(ActivityThread.java:5254)  
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:903)  
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)  
Suppressed: java.lang.ClassNotFoundException: bolts.Task 
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) 
... 16 more                         
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class 
loader; no stack available 

Answer 1

看來你缺少螺栓參考你的項目。安裝螺栓，然後再試一次： https://github.com/BoltsFramework/Bolts-Android