Periodic HTTP request

Send an HTTP request every second and update the view according to the response

Periodic HTTP request
Send an HTTP request every second and update the view according to the response
florian staine
1 parent c30d084a
Showing 4 changed files with 63 additions and 0 deletions Show diff stats
app/build.gradle
app/src/main/AndroidManifest.xml
app/src/main/java/fr/utbm/lo53/p2017/positionningapp/PositioningActivity.java
app/src/main/res/layout/content_positioning.xml
@@ -30,5 +30,6 @@ dependencies {
     compile 'com.android.support:design:25.3.1'
     compile 'com.android.support:support-v4:25.3.1'
     compile 'com.android.support:support-vector-drawable:25.3.1'
+    compile 'com.android.volley:volley:1.0.0'
     testCompile 'junit:junit:4.12'
 }
@@ -2,6 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="fr.utbm.lo53.p2017.positionningapp">
+    <uses-permission android:name="android.permission.INTERNET" />
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
 package fr.utbm.lo53.p2017.positionningapp;
 import android.os.Bundle;
+import android.os.Handler;
 import android.support.constraint.ConstraintLayout;
 import android.support.v7.widget.Toolbar;
+import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
@@ -10,14 +12,55 @@ import android.view.animation.AccelerateInterpolator;
 import android.view.animation.AlphaAnimation;
 import android.view.animation.Animation;
 import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.android.volley.Request;
+import com.android.volley.RequestQueue;
+import com.android.volley.Response;
+import com.android.volley.VolleyError;
+import com.android.volley.toolbox.StringRequest;
+import com.android.volley.toolbox.Volley;
 public class PositioningActivity extends BaseActivity {
     private static final String TAG = "PositioningActivity";
     private ConstraintLayout start_layout;
+    private TextView textView;
+
     private Animation hideAnimation;
+    // Instantiate the RequestQueue.
+    private RequestQueue queue;
+
+    private String url = "http://www.google.com";
+
+    // Request a string response from the provided URL.
+    private StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
+            new Response.Listener<String>() {
+                @Override
+                public void onResponse(String response) {
+                    // Display the first 500 characters of the response string.
+                    textView.setText("Response is: "+ response.substring(0,500));
+                }
+            }, new Response.ErrorListener() {
+        @Override
+        public void onErrorResponse(VolleyError error) {
+            Log.d(TAG, error.getCause().toString());
+            textView.clearComposingText();
+        }
+    });
+
+    private final Handler handler = new Handler();
+    private final Runnable runnable = new Runnable() {
+        @Override
+        public void run() {
+            // Add the request to the RequestQueue.
+            queue.add(stringRequest);
+            handler.postDelayed(this, 1000);
+        }
+    };
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -27,6 +70,16 @@ public class PositioningActivity extends BaseActivity {
         start_layout = (ConstraintLayout) findViewById(R.id.start_layout);
         hideAnimation = createFadeOutAndHideAnimation();
+
+        textView = (TextView) findViewById(R.id.ID_yolo);
+
+        queue = Volley.newRequestQueue(this);
+    }
+
+    @Override
+    protected void onDestroy() {
+        handler.removeCallbacks(runnable);
+        super.onDestroy();
     }
     @Override
@@ -39,6 +92,7 @@ public class PositioningActivity extends BaseActivity {
     public void startLocating(View v) {
         start_layout.startAnimation(hideAnimation);
+        handler.post(runnable);
     }
     private Animation createFadeOutAndHideAnimation() {
@@ -23,6 +23,13 @@
         android:layout_marginStart="8dp"
         android:layout_marginEnd="8dp" />
+    <TextView
+        android:id="@+id/ID_yolo"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="TextView"
+        android:textAppearance="@style/TextAppearance.AppCompat.Medium" />
+
     <android.support.constraint.ConstraintLayout
         android:id="@+id/start_layout"
         android:layout_width="0dp"