Manifests입니다. MainView를 액티비티 시작화면으로 하고 싶은데 자꾸 애뮬레이터가 실행되더가 중단됩니다. 다른 액티비티를 시작화면으로 하면 잘되는데 MainView만 자꾸 그러는데 다른 이유가 있을까요??
<?xml version="1.0" encoding="utf-8"?> <manifest package="com.android.tonyvu.sc.demo" xmlns:android="
http://schemas.android.com/apk/res/android"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme"> <activity android:name=".MainActivity" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> </intent-filter> </activity> <activity android:name=".ProductActivity"/> <activity android:name=".ShoppingCartActivity"/> <activity android:name=".PayActivity"/> <activity android:name=".MainView"/> <activity android:name=".MainActivity2"/> <activity android:name=".MainActivity3"/> <activity android:name=".MainActivity4"/> <activity android:name=".MainActivity5"/> <activity android:name=".MainActivity6"/> </application> </manifest>
Logcat MainView에 대한 오류입니다. 도와주세요!!
2018-11-30 21:47:45.597 24486-24486/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.android.tonyvu.sc.demo, PID: 24486
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.tonyvu.sc.demo/com.android.tonyvu.sc.demo.MainView}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.View.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.View.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
at com.android.tonyvu.sc.demo.MainView.init(MainView.java:74)
at com.android.tonyvu.sc.demo.MainView.onCreate(MainView.java:67)
at android.app.Activity.performCreate(Activity.java:7136)
at android.app.Activity.performCreate(Activity.java:7127)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)