Scroll text view to bottom on append

Jonas Fredriksson · jonfre · commit b000e62b52f7 · 2019-04-25T21:29:56.000+02:00
Disable buttons while running
Ping timeout text
diff --git a/app/src/main/java/com/stealthcotper/networktools/MainActivity.java b/app/src/main/java/com/stealthcotper/networktools/MainActivity.java
@@ -10,7 +10,9 @@
 import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
+import android.widget.Button;
 import android.widget.EditText;
+import android.widget.ScrollView;
 import android.widget.TextView;
 
 import com.stealthcopter.networktools.ARPInfo;
@@ -25,12 +27,18 @@
 
 import java.io.IOException;
 import java.net.InetAddress;
+import java.net.UnknownHostException;
 import java.util.ArrayList;
 
 public class MainActivity extends AppCompatActivity {
 
     private TextView resultText;
     private EditText editIpAddress;
+    private ScrollView scrollView;
+    private Button pingButton;
+    private Button wolButton;
+    private Button portScanButton;
+    private Button subnetDevicesButton;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -41,6 +49,11 @@ protected void onCreate(Bundle savedInstanceState) {
 
         resultText = findViewById(R.id.resultText);
         editIpAddress = findViewById(R.id.editIpAddress);
+        scrollView = findViewById(R.id.scrollView1);
+        pingButton = findViewById(R.id.pingButton);
+        wolButton = findViewById(R.id.wolButton);
+        portScanButton = findViewById(R.id.portScanButton);
+        subnetDevicesButton = findViewById(R.id.subnetDevicesButton);
 
         InetAddress ipAddress = IPTools.getLocalIPv4Address();
         if (ipAddress != null){
@@ -118,6 +131,23 @@ private void appendResultsText(final String text) {
             @Override
             public void run() {
                 resultText.append(text + "\n");
+                scrollView.post(new Runnable() {
+                    @Override
+                    public void run() {
+                        scrollView.fullScroll(View.FOCUS_DOWN);
+                    }
+                });
+            }
+        });
+    }
+
+    private void setEnabled(final View view, final boolean enabled) {
+        runOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                if (view != null) {
+                    view.setEnabled(enabled);
+                }
             }
         });
     }
@@ -130,8 +160,19 @@ private void doPing() throws Exception {
             return;
         }
 
+        setEnabled(pingButton, false);
+
         // Perform a single synchronous ping
-        PingResult pingResult = Ping.onAddress(ipAddress).setTimeOutMillis(1000).doPing();
+        PingResult pingResult = null;
+        try {
+            pingResult = Ping.onAddress(ipAddress).setTimeOutMillis(1000).doPing();
+        } catch (UnknownHostException e) {
+            e.printStackTrace();
+            appendResultsText(e.getMessage());
+            setEnabled(pingButton, true);
+            return;
+        }
+
 
         appendResultsText("Pinging Address: " + pingResult.getAddress().getHostAddress());
         appendResultsText("HostName: " + pingResult.getAddress().getHostName());
@@ -142,7 +183,11 @@ private void doPing() throws Exception {
         Ping.onAddress(ipAddress).setTimeOutMillis(1000).setTimes(5).doPing(new Ping.PingListener() {
             @Override
             public void onResult(PingResult pingResult) {
-                appendResultsText(String.format("%.2f ms", pingResult.getTimeTaken()));
+                if (pingResult.isReachable) {
+                    appendResultsText(String.format("%.2f ms", pingResult.getTimeTaken()));
+                } else {
+                    appendResultsText(getString(R.string.timeout));
+                }
             }
 
             @Override
@@ -151,11 +196,13 @@ public void onFinished(PingStats pingStats) {
                         pingStats.getNoPings(), pingStats.getPacketsLost()));
                 appendResultsText(String.format("Min/Avg/Max Time: %.2f/%.2f/%.2f ms",
                         pingStats.getMinTimeTaken(), pingStats.getAverageTimeTaken(), pingStats.getMaxTimeTaken()));
+                setEnabled(pingButton, true);
             }
 
             @Override
             public void onError(Exception e) {
                 // TODO: STUB METHOD
+                setEnabled(pingButton, true);
             }
         });
 
@@ -169,13 +216,16 @@ private void doWakeOnLan() throws IllegalArgumentException {
             return;
         }
 
+        setEnabled(wolButton, false);
+
         appendResultsText("IP address: " + ipAddress);
 
         // Get mac address from IP (using arp cache)
         String macAddress = ARPInfo.getMACFromIPAddress(ipAddress);
 
         if (macAddress == null) {
             appendResultsText("Could not fromIPAddress MAC address, cannot send WOL packet without it.");
+            setEnabled(wolButton, true);
             return;
         }
 
@@ -187,7 +237,10 @@ private void doWakeOnLan() throws IllegalArgumentException {
             WakeOnLan.sendWakeOnLan(ipAddress, macAddress);
             appendResultsText("WOL Packet sent");
         } catch (IOException e) {
+            appendResultsText(e.getMessage());
             e.printStackTrace();
+        } finally {
+            setEnabled(wolButton, true);
         }
     }
 
@@ -196,9 +249,12 @@ private void doPortScan() throws Exception {
 
         if (TextUtils.isEmpty(ipAddress)) {
             appendResultsText("Invalid Ip Address");
+            setEnabled(portScanButton, true);
             return;
         }
 
+        setEnabled(portScanButton, false);
+
         // Perform synchronous port scan
         appendResultsText("PortScanning IP: " + ipAddress);
         ArrayList<Integer> openPorts = PortScan.onAddress(ipAddress).setPort(21).setMethodTCP().doScan();
@@ -216,6 +272,7 @@ public void onResult(int portNo, boolean open) {
             public void onFinished(ArrayList<Integer> openPorts) {
                 appendResultsText("Open Ports: " + openPorts.size());
                 appendResultsText("Time Taken: " + ((System.currentTimeMillis() - startTimeMillis)/1000.0f));
+                setEnabled(portScanButton, true);
             }
         });
 
@@ -226,6 +283,8 @@ public void onFinished(ArrayList<Integer> openPorts) {
 
     private void findSubnetDevices() {
 
+        setEnabled(subnetDevicesButton, false);
+
         final long startTimeMillis = System.currentTimeMillis();
 
         SubnetDevices subnetDevices = SubnetDevices.fromLocalAddress().findDevices(new SubnetDevices.OnSubnetDeviceFound() {
@@ -239,6 +298,7 @@ public void onFinished(ArrayList<Device> devicesFound) {
                 float timeTaken =  (System.currentTimeMillis() - startTimeMillis)/1000.0f;
                 appendResultsText("Devices Found: " + devicesFound.size());
                 appendResultsText("Finished "+timeTaken+" s");
+                setEnabled(subnetDevicesButton, true);
             }
         });
 
diff --git a/app/src/main/res/layout/content_main.xml b/app/src/main/res/layout/content_main.xml
@@ -84,6 +84,7 @@
     </LinearLayout>
 
     <ScrollView
+        android:id="@+id/scrollView1"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:paddingBottom="@dimen/activity_horizontal_margin"
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
@@ -7,5 +7,6 @@
   <string name="port_scan">Port Scan</string>
   <string name="github_page">Github</string>
   <string name="github_url">https://github.com/stealthcopter/AndroidNetworkTools</string>
-    <string name="subnet">Subnet Devices</string>
+  <string name="subnet">Subnet Devices</string>
+  <string name="timeout">** Timeout **</string>
 </resources>
