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  1. ,
    via Stack Overflow by Rasel

    Your package name in the manifest is as com.google.android.gm and activity name as com.android.mail.compose.ComposeActivity, making a mismatch between the package and activity name. Your activity class name should start with the package name.

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, 2 years ago
Could not execute method for android:onClick
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Could not execute method for android:onClick
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via Stack Overflow by HARSHIL JAIN
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Could not execute method for android:onClick
android.content.ActivityNotFoundException: Unable to find explicit activity class {eu.hydrologis.geopaparazzi/eu.geopaparazzi.library.core.fragments.DatabaseListFragment}; have you declared this activity in your AndroidManifest.xml?	at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1769)	at android.app.Instrumentation.execStartActivity(Instrumentation.java:1491)	at android.app.Activity.startActivityForResult(Activity.java:3796)	at android.app.Activity.startActivityForResult(Activity.java:3744)	at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:842)	at android.app.Activity.startActivity(Activity.java:4067)	at android.app.Activity.startActivity(Activity.java:4035)	at eu.hydrologis.geopaparazzi.ui.activities.SqlViewActivity.launchOwnQuery(SqlViewActivity.java:104)	at java.lang.reflect.Method.invoke(Native Method)	at java.lang.reflect.Method.invoke(Method.java:372)	at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)	at android.view.View.performClick(View.java:5044)	at android.view.View$PerformClick.run(View.java:20154)	at android.os.Handler.handleCallback(Handler.java:739)	at android.os.Handler.dispatchMessage(Handler.java:95)	at android.os.Looper.loop(Looper.java:135)	at android.app.ActivityThread.main(ActivityThread.java:5536)	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:1397)	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1192)