update logic on FAB based on PPS

Author: johnnzhou

app/src/main/java/com/lcl/lclmeasurementtool/MainActivity.java

@@ -5,6 +5,7 @@
 
 import android.content.Context;
 import android.os.Bundle;
+import android.util.Log;
 import android.widget.ImageView;
 import android.widget.TextView;
 import android.widget.Toast;
@@ -50,12 +51,13 @@ protected void onCreate(Bundle savedInstanceState) {
             updateSignalStrengthTexts(SignalStrengthLevel.NONE, 0);
         }
 
-        updateFAB(mNetworkManager.isCellularConnected());
         setUpFAB();
+        updateFAB(mNetworkManager.isCellularConnected());
 
         mNetworkManager.addNetworkChangeListener(new NetworkManager.NetworkChangeListener() {
             @Override
             public void onAvailable() {
+                Log.i(TAG, "from call back on avaliable");
                 updateFAB(true);
                 mCellularManager.listenToSignalStrengthChange((level, dBm) ->
                                                                 updateSignalStrengthTexts(level, dBm));
@@ -98,29 +100,37 @@ private void updateSignalStrengthTexts(SignalStrengthLevel level, int dBm) {
         });
     }
 
+    private void setUpFAB() {
+        FloatingActionButton fab = findViewById(R.id.fab);
+        fab.setOnClickListener(button -> {
+            ((FloatingActionButton) button).setImageResource( isTestStarted ? R.drawable.start : R.drawable.stop );
+            fab.setColorFilter(ContextCompat.getColor(this, R.color.purple_500));
+
+            // TODO: init/cancel ping and iperf based in iTestStart
+
+            isTestStarted = !isTestStarted;
+            Toast.makeText(this, "test starts: " + isTestStarted, Toast.LENGTH_SHORT).show();
+        });
+    }
+
     private void updateFAB(boolean state) {
         runOnUiThread(() -> {
             FloatingActionButton fab = findViewById(R.id.fab);
             fab.setEnabled(state);
+            fab.setImageResource(R.drawable.start);
             fab.setColorFilter(state ? ContextCompat.getColor(this, R.color.purple_500) :
                     ContextCompat.getColor(this, R.color.light_gray));
 
 //             TODO: cancel ping and iperf if started
-//            isTestStarted = false;
-        });
-    }
+//            if (isTestStarted) {
+                // cancel test
+//            }
 
-    private void setUpFAB() {
-        FloatingActionButton fab = findViewById(R.id.fab);
-        fab.setOnClickListener(button -> {
-            ((FloatingActionButton) button).setImageResource( isTestStarted ? R.drawable.start : R.drawable.stop );
-            fab.setColorFilter(ContextCompat.getColor(this, R.color.purple_500));
-            // TODO: init/cancel ping and iperf
-            isTestStarted = !isTestStarted;
-            Toast.makeText(this, "test starts: " + isTestStarted, Toast.LENGTH_SHORT).show();
+            isTestStarted = false;
         });
     }
 
+
     // TODO: update FAB Icon and State when tests are done