add interval as preference

Author: naman14

Diff for: .idea/modules.xml

@@ -23,6 +23,7 @@
             </intent-filter>
         </activity>
         <activity android:name=".DonateActivity"/>
+        <activity android:name=".SettingsActivity"/>
 
         <!--use your own api key for fabric-->
         <meta-data

Diff for: app/src/main/AndroidManifest.xml

@@ -158,6 +158,9 @@ public void run() {
                                 startActivity(intent);
                                 break;
                             case 2:
+                                startActivity(new Intent(MainActivity.this, SettingsActivity.class));
+                                break;
+                            case 3:
                                 startActivity(new Intent(MainActivity.this, DonateActivity.class));
                                 break;
                         }
@@ -230,6 +233,7 @@ private void prepareListData() {
         List<String> heading10 = new ArrayList<String>();
         heading10.add("About");
         heading10.add("Fork on Github");
+        heading10.add("Settings");
 
         try {
             if (BillingProcessor.isIabServiceAvailable(this)) {

Diff for: app/src/main/java/com/naman14/algovisualizer/MainActivity.java

@@ -0,0 +1,30 @@
+package com.naman14.algovisualizer;
+
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.support.v7.app.AppCompatActivity;
+import android.view.MenuItem;
+
+/**
+ * Created by naman on 13/9/17.
+ */
+
+public class SettingsActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_settings);
+
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+        getSupportActionBar().setTitle("Settings");
+        getFragmentManager().beginTransaction().replace(R.id.fragment_container, new SettingsFragment()).commit();
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        if (item.getItemId() == android.R.id.home)
+            super.onBackPressed();
+        return super.onOptionsItemSelected(item);
+    }
+}

Diff for: app/src/main/java/com/naman14/algovisualizer/SettingsActivity.java

@@ -0,0 +1,44 @@
+package com.naman14.algovisualizer;
+
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.preference.EditTextPreference;
+import android.preference.Preference;
+import android.preference.PreferenceFragment;
+import android.preference.PreferenceManager;
+import android.support.annotation.Nullable;
+
+import com.naman14.algovisualizer.algorithm.Algorithm;
+
+/**
+ * Created by naman on 13/9/17.
+ */
+
+public class SettingsFragment extends PreferenceFragment implements SharedPreferences.OnSharedPreferenceChangeListener {
+
+    public static final String KEY_INTERVAL = "preference_interval";
+
+    SharedPreferences preferences;
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        addPreferencesFromResource(R.xml.preferences);
+
+        preferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
+        preferences.registerOnSharedPreferenceChangeListener(this);
+        findPreference(KEY_INTERVAL).setSummary(preferences.getString(KEY_INTERVAL, "500"));
+
+    }
+
+    @Override
+    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
+        Preference p = findPreference(key);
+        if (p instanceof EditTextPreference) {
+            EditTextPreference editTextPref = (EditTextPreference) p;
+            p.setSummary(editTextPref.getText());
+            Algorithm.setInterval(Integer.parseInt(editTextPref.getText()));
+        }
+    }
+}

Diff for: app/src/main/java/com/naman14/algovisualizer/SettingsFragment.java

@@ -15,6 +15,7 @@
 package com.naman14.algovisualizer;
 
 import android.os.Bundle;
+import android.preference.PreferenceManager;
 import android.support.annotation.Nullable;
 import android.support.design.widget.AppBarLayout;
 import android.support.design.widget.CoordinatorLayout;
@@ -126,6 +127,7 @@ public void onTabReSelected(int position) {
         algoFragment = AlgoDescriptionFragment.newInstance(getArguments().getString(Algorithm.KEY_ALGORITHM));
 
         setupFragment(getArguments().getString(Algorithm.KEY_ALGORITHM));
+
         return rootView;
     }
 
@@ -254,6 +256,8 @@ public void setupFragment(String algorithmKey) {
                 visualizer = null;
         }
 
+        Algorithm.setInterval(Integer.parseInt(PreferenceManager.getDefaultSharedPreferences(getActivity())
+                .getString(SettingsFragment.KEY_INTERVAL, "500")));
         algorithm.setStarted(false);
         fab.setImageResource(R.drawable.ic_play_arrow_white_24dp);
         logFragment.clearLog();

Diff for: app/src/main/java/com/naman14/algovisualizer/VisualAlgoFragment.java

@@ -18,9 +18,11 @@
 import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.Message;
+import android.preference.PreferenceManager;
 
 import com.naman14.algovisualizer.AlgoCompletionListener;
 import com.naman14.algovisualizer.LogFragment;
+import com.naman14.algovisualizer.SettingsFragment;
 
 import java.util.concurrent.atomic.AtomicBoolean;
 
@@ -44,7 +46,6 @@ public class Algorithm extends HandlerThread {
     public static final String DIJKSTRA = "dijkstra";
     public static final String BELLMAN_FORD = "bellman_ford";
 
-
     public LogFragment logFragment;
     public Activity activity;
     public AlgoCompletionListener completionListener;
@@ -56,12 +57,14 @@ public class Algorithm extends HandlerThread {
 
     private Handler workerHandler;
 
+    private static int INTERVAL = 500;
+
     public Algorithm() {
         super("");
     }
 
     public void sleep() {
-        sleepFor(500);
+        sleepFor(INTERVAL);
     }
 
     public void sleepFor(long time) {
@@ -193,4 +196,9 @@ public void run() {
             });
         }
     }
+
+    public static void setInterval(int interval) {
+        INTERVAL = interval;
+    }
+
 }

Diff for: app/src/main/java/com/naman14/algovisualizer/algorithm/Algorithm.java

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical" android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <FrameLayout
+        android:id="@+id/fragment_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+
+</FrameLayout>

Diff for: app/src/main/res/layout/activity_settings.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <EditTextPreference
+        android:defaultValue="500"
+        android:inputType="numberSigned"
+        android:key="preference_interval"
+        android:title="Interval (delay between each step in ms)" />
+
+</PreferenceScreen>