Android Bluetooth Le Gatt - Show RSSI

1. Add RSSI Textview @ listitem_device.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="match_parent"
              android:layout_height="wrap_content">
    <TextView android:id="@+id/device_name"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textSize="24dp"/>
    <TextView android:id="@+id/device_address"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textSize="12dp"/>
    <TextView android:id="@+id/device_RSSI"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="12dp"/>
</LinearLayout>
2. Add java code in DeviceScanActivity.java
2-1 Add RSSIV as a global variable.

2-2 Add set RSSIV as global var and show it.

3. Result: