안드로이드 on/off 버튼?

        <ImageView

            android:id="@+id/on_btn"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:src="@drawable/on"

            android:visibility="visible" />
 
        <ImageView

            android:id="@+id/off_btn"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:src="@drawable/off"

            android:visibility="invisible" />
 
 

        on_btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                on_btn.setVisibility(View.GONE);
                off_btn.setVisibility(View.VISIBLE);
                state.setWi(false);
            }
        });
        off_btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                off_btn.setVisibility(View.GONE);
                on_btn.setVisibility(View.VISIBLE);
                state.setWi(true);
            }
        });