Click from XML in android

Set Button click from xml file in android.

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In the xml file set button property "Onclick".

In the "Onclick property" set argument as a your method name available in java file.

Below the example of set click listner from xml file.

Put this code for button in layout file.

In below code <android:onClick="onBtnClicked">.

Create "onBtnClicked" method in java file.

<Button
android:id="@+id/my_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Click me"
android:onClick="onBtnClicked">
</Button>

java code display below.

public void onBtnClicked(View v){
    if(v.getId() == R.id.my_btn){
        //handle the click here
    }
}

See more update about android here