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03-31 21:26:47.921 21954-21954/com.example.user.letseat E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.user.letseat, PID: 21954 android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.user.letseat/com.example.user.letseat.SignUp}; have you declared this activity in your AndroidManifest.xml? at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1788) at android.app.Instrumentation.execStartActivity(Instrumentation.java:1512) at android.app.Activity.startActivityForResult(Activity.java:3873) at android.support.v4.app.BaseFragmentActivityApi16.startActivityForResult(BaseFragmentActivityApi16.java:54) at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:67) at android.app.Activity.startActivityForResult(Activity.java:3824) at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:720) at android.app.Activity.startActivity(Activity.java:4154) at android.app.Activity.startActivity(Activity.java:4122) at com.example.user.letseat.MainActivity$2.onClick(MainActivity.java:33) at android.view.View.performClick(View.java:4848) at android.view.View$PerformClick.run(View.java:20262) at android.os.Handler.handleCallback(Handler.java:815) at android.os.Handler.dispatchMessage(Handler.java:104) at android.os.Looper.loop(Looper.java:194) at android.app.ActivityThread.main(ActivityThread.java:5631) 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:959) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:754)

Santanu Sur
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hajar syahindah
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2 Answers2

0

have you declared this activity in your AndroidManifest.xml?

Please declare your activity in your manifest file, as follows:

<activity
     android:name="com.example.package.YourActivityName"
     android:label="app_name" />
FlyingNades
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  • yes, i have declare it. but still the same. and for app_name, it is my application name or it is default app_name? do you get me ? and other thing, it must in the activity right ? oh i think i must show you the coding. – hajar syahindah Apr 02 '18 at 05:41
  • You can actually remove the label part, and no. The app_name is a place holder for you to put your app name – FlyingNades Apr 02 '18 at 07:55
0

You are missing SignUp entry inside AndroidManifest.xml file that why you getting

android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.user.letseat/com.example.user.letseat.SignUp}; have you declared this activity in your AndroidManifest.xml?

add this line inside your AndroidManifest.xml application tag

<activity android:name=".SignUp"/>
akhilesh0707
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