IllegalStateException: Could not find method insert(View) in a parent or ancestor Context class android.support.v7.widget.AppCompatButton

Question

I have launched the program in single project which work properly.

However, when I have copied and pasted into a bigger project, it gives me bellow error in logcat.

Answer 1

I found the error.

In layout second_layout.xml, you defined Button with android:onClick="insert"

This layout is included in activity_user_profile.xml

This activity_user_profile.xml is used in Main2Activity.java

So, that is the issue:

"Insert Button" is being used in Main2Activity.java. However, that class does not have any method public void insert(View view)

So, add this to your Main2Activity.java:

public void insert(View view){
    // Add the code that you want
    // Or do nothing if you want
}

Rememeber

If you set any onClick event in a layout file (xml), you have to create the method in the parent activity that will use that layout.