week 5 done

Week_04_Simple_Views_and_Layouts/README.md

@@ -132,6 +132,8 @@ Note here:
 1. The 'home' button doesn't destroy your activity. The system will remember your app's current state. So press 'home' button and then press your app icon to restart your app is **NOT** a way to show data persistence.
 2. If the system must recover memory in an emergency, `onStop()` and `onDestroy()` might not be called. Again, to save data for the sake of persistence you'll need to do it in `onPause()`.
 
+> [What is the correct order of calling superclass methods in onPause, onStop and onDestroy methods? and Why?](https://stackoverflow.com/questions/18821481/what-is-the-correct-order-of-calling-superclass-methods-in-onpause-onstop-and-o)
+
 ### FrameLayout, ScrollView and TableLayouts
 
 In this section, you'll continue working on 'My Activities' project and make it a 3-activity app. The idea is that in the main activity if you click a button (i.e. 'write note') it'll take you to a second activity where you can take some notes. Once finished, if you click 'display', all the info you typed will be displayed in a new 3rd activity. 

old(needs_updating)/Week_05_AdapterViews_and_Fragments/MyFragments_copy/app/build.gradle → Week_05_AdapterViews_and_Fragments/MyFragments/app/build.gradle

@@ -1,12 +1,12 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 24
-    buildToolsVersion "24.0.3"
+    compileSdkVersion 26
+    buildToolsVersion "26.0.0"
     defaultConfig {
         applicationId "com.example.jianhuayang.myfragments"
         minSdkVersion 15
-        targetSdkVersion 24
+        targetSdkVersion 26
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -24,9 +24,8 @@ dependencies {
     androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    compile 'com.android.support:appcompat-v7:24.2.1'
-    compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha8'
-    compile 'com.android.support:support-v4:24.2.1'
-    compile 'com.android.support:recyclerview-v7:24.2.1'
+    compile 'com.android.support:appcompat-v7:26.+'
+    compile 'com.android.support.constraint:constraint-layout:1.0.2'
+    compile 'com.android.support:support-v4:26.+'
     testCompile 'junit:junit:4.12'
 }

old(needs_updating)/Week_05_AdapterViews_and_Fragments/MyFragments_copy/app/proguard-rules.pro → Week_05_AdapterViews_and_Fragments/MyFragments/app/proguard-rules.pro

@@ -15,3 +15,11 @@
 #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
 #   public *;
 #}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

old(needs_updating)/Week_05_AdapterViews_and_Fragments/MyLists_copy/app/src/main/AndroidManifest.xml → Week_05_AdapterViews_and_Fragments/MyFragments/app/src/main/AndroidManifest.xml

@@ -1,22 +1,27 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.yang.mylists">
+          package="com.example.jianhuayang.myfragments">
 
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
         <activity android:name=".MainActivity">
             <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
+                <action android:name="android.intent.action.MAIN"/>
 
-                <category android:name="android.intent.category.LAUNCHER" />
+                <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
-        <activity android:name=".PhotoListActivity" />
-        <activity android:name=".GridActivity"></activity>
+        <activity android:name=".DynamicActivity">
+        </activity>
+        <activity android:name=".ListFragmentActivity">
+        </activity>
+        <activity android:name=".MultiPanelActivity">
+        </activity>
     </application>
 
-</manifest>
+</manifest>

old(needs_updating)/Week_05_AdapterViews_and_Fragments/MyFragments_copy/app/src/main/java/com/example/jianhuayang/myfragments/DetailsFragment.java → Week_05_AdapterViews_and_Fragments/MyFragments/app/src/main/java/com/example/jianhuayang/myfragments/DetailsFragment.java

@@ -17,19 +17,13 @@ import com.example.jianhuayang.myfragments.data.Candidates;
  */
 public class DetailsFragment extends Fragment {
 
+
     public static final String POSITION = "position";
 
     public DetailsFragment() {
         // Required empty public constructor
     }
 
-    @Override
-    public View onCreateView(LayoutInflater inflater, ViewGroup container,
-                             Bundle savedInstanceState) {
-        // Inflate the layout for this fragment
-        return inflater.inflate(R.layout.fragment_details, container, false);
-    }
-
     @Override
     public void onStart() {
         super.onStart();
@@ -45,4 +39,12 @@ public class DetailsFragment extends Fragment {
             description.setText("Click on the names on the left to see details");
         }
     }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_details, container, false);
+    }
+
 }

old(needs_updating)/Week_05_AdapterViews_and_Fragments/MyFragments_copy/app/src/main/java/com/example/jianhuayang/myfragments/DynamicActivity.java → Week_05_AdapterViews_and_Fragments/MyFragments/app/src/main/java/com/example/jianhuayang/myfragments/DynamicActivity.java

@@ -1,17 +1,19 @@
 package com.example.jianhuayang.myfragments;
 
 import android.content.res.Configuration;
+import android.os.Bundle;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentTransaction;
 import android.support.v7.app.AppCompatActivity;
-import android.os.Bundle;
+
+import layout.BlankFragment;
+import layout.BlankFragment2;
 
 public class DynamicActivity extends AppCompatActivity {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_dynamic);
 
         FragmentManager fragmentManager = getSupportFragmentManager();
         FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
@@ -23,5 +25,6 @@ public class DynamicActivity extends AppCompatActivity {
             fragmentTransaction.replace(R.id.activity_dynamic, frag2);
         }
         fragmentTransaction.commit();
+        setContentView(R.layout.activity_dynamic);
     }
 }

old(needs_updating)/Week_05_AdapterViews_and_Fragments/MyFragments_copy/app/src/main/java/com/example/jianhuayang/myfragments/ItemFragment.java → Week_05_AdapterViews_and_Fragments/MyFragments/app/src/main/java/com/example/jianhuayang/myfragments/ItemFragment.java

@@ -5,14 +5,10 @@ import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.ListFragment;
-import android.util.Log;
-import android.view.LayoutInflater;
 import android.view.View;
-import android.view.ViewGroup;
 import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.ListView;
-import android.widget.TextView;
 import android.widget.Toast;
 
 import com.example.jianhuayang.myfragments.data.Candidates;
@@ -27,11 +23,21 @@ public class ItemFragment extends ListFragment implements AdapterView.OnItemClic
         // Required empty public constructor
     }
 
+
+//    @Override
+//    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+//                             Bundle savedInstanceState) {
+//        TextView textView = new TextView(getActivity());
+//        textView.setText(R.string.hello_blank_fragment);
+//        return textView;
+//    }
+
     @Override
     public void onActivityCreated(@Nullable Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
         setListAdapter(new ArrayAdapter<String>(getActivity(),
                 android.R.layout.simple_list_item_1, android.R.id.text1, Candidates.candidateNames));
+//        getListView().setOnItemClickListener(this);
         if (getActivity() instanceof ListFragmentActivity) {
             getListView().setOnItemClickListener(this);
         }
@@ -49,9 +55,7 @@ public class ItemFragment extends ListFragment implements AdapterView.OnItemClic
     @Override
     public void onStart() {
         super.onStart();
-
         getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
         getListView().setSelector(android.R.color.darker_gray);
-//        above from http://stackoverflow.com/questions/5853719/highlighting-the-selected-item-in-the-listview-in-android
     }
 }

old(needs_updating)/Week_05_AdapterViews_and_Fragments/MyFragments_copy/app/src/main/java/com/example/jianhuayang/myfragments/ListFragmentActivity.java → Week_05_AdapterViews_and_Fragments/MyFragments/app/src/main/java/com/example/jianhuayang/myfragments/ListFragmentActivity.java

@@ -9,7 +9,7 @@ public class ListFragmentActivity extends AppCompatActivity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_list_fragment);
-
         getSupportFragmentManager().beginTransaction().add(R.id.activity_list_fragment, new ItemFragment()).commit();
+
     }
 }

old(needs_updating)/Week_05_AdapterViews_and_Fragments/MyFragments_copy/app/src/main/java/com/example/jianhuayang/myfragments/MainActivity.java → Week_05_AdapterViews_and_Fragments/MyFragments/app/src/main/java/com/example/jianhuayang/myfragments/MainActivity.java

@@ -1,8 +1,8 @@
 package com.example.jianhuayang.myfragments;
 
 import android.content.Intent;
-import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
 import android.view.View;
 
 public class MainActivity extends AppCompatActivity {

old(needs_updating)/Week_05_AdapterViews_and_Fragments/MyFragments_copy/app/src/main/java/com/example/jianhuayang/myfragments/MultiPanelActivity.java → Week_05_AdapterViews_and_Fragments/MyFragments/app/src/main/java/com/example/jianhuayang/myfragments/MultiPanelActivity.java

@@ -1,22 +1,23 @@
 package com.example.jianhuayang.myfragments;
 
+import android.os.Bundle;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentTransaction;
 import android.support.v7.app.AppCompatActivity;
-import android.os.Bundle;
 import android.view.View;
 import android.widget.AdapterView;
 
-public class MultiPanelActivity extends AppCompatActivity implements AdapterView.OnItemClickListener {
+public class MultiPanelActivity extends AppCompatActivity implements AdapterView.OnItemClickListener{
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_multi_panel);
-
-        if (savedInstanceState == null) {
-            getSupportFragmentManager().beginTransaction().add(R.id.fragmentLeft, new ItemFragment()).commit();
-            getSupportFragmentManager().beginTransaction().add(R.id.fragmentRight, new DetailsFragment()).commit();
+        if (savedInstanceState == null){
+            getSupportFragmentManager().beginTransaction().add(R.id.fragmentLeft, new
+                    ItemFragment()).commit();
+            getSupportFragmentManager().beginTransaction().add(R.id.fragmentRight, new
+                    DetailsFragment()).commit();
         }
     }
 

old(needs_updating)/Week_05_AdapterViews_and_Fragments/MyFragments_copy/app/src/main/java/com/example/jianhuayang/myfragments/data/Candidates.java → Week_05_AdapterViews_and_Fragments/MyFragments/app/src/main/java/com/example/jianhuayang/myfragments/data/Candidates.java

@@ -3,11 +3,10 @@ package com.example.jianhuayang.myfragments.data;
 import com.example.jianhuayang.myfragments.R;
 
 /**
- * Created by jianhuayang on 28/10/2016.
+ * Created by jianhuayang on 31/10/2017.
  */
 
 public class Candidates {
-
     public static final String[] candidateNames = {
             "Hillary Clinton",
             "Bernie Sanders",

old(needs_updating)/Week_05_AdapterViews_and_Fragments/MyFragments_copy/app/src/main/java/com/example/jianhuayang/myfragments/BlankFragment.java → Week_05_AdapterViews_and_Fragments/MyFragments/app/src/main/java/layout/BlankFragment.java

@@ -1,4 +1,4 @@
-package com.example.jianhuayang.myfragments;
+package layout;
 
 
 import android.os.Bundle;
@@ -7,6 +7,7 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
+import com.example.jianhuayang.myfragments.R;
 
 /**
  * A simple {@link Fragment} subclass.

old(needs_updating)/Week_05_AdapterViews_and_Fragments/MyFragments_copy/app/src/main/java/com/example/jianhuayang/myfragments/BlankFragment2.java → Week_05_AdapterViews_and_Fragments/MyFragments/app/src/main/java/layout/BlankFragment2.java

@@ -1,4 +1,4 @@
-package com.example.jianhuayang.myfragments;
+package layout;
 
 
 import android.os.Bundle;
@@ -7,6 +7,7 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
+import com.example.jianhuayang.myfragments.R;
 
 /**
  * A simple {@link Fragment} subclass.

Week_05_AdapterViews_and_Fragments/MyFragments/app/src/main/res/layout/activity_dynamic.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/activity_dynamic"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context="com.example.jianhuayang.myfragments.DynamicActivity">
+
+</android.support.constraint.ConstraintLayout>

Week_05_AdapterViews_and_Fragments/MyFragments/app/src/main/res/layout/activity_list_fragment.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/activity_list_fragment"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context="com.example.jianhuayang.myfragments.ListFragmentActivity">
+
+</LinearLayout>

old(needs_updating)/Week_05_AdapterViews_and_Fragments/MyFragments_copy/app/src/main/res/layout/activity_main.xml → Week_05_AdapterViews_and_Fragments/MyFragments/app/src/main/res/layout/activity_main.xml

@@ -1,50 +1,47 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/activity_main"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
-    android:paddingBottom="@dimen/activity_vertical_margin"
-    android:paddingLeft="@dimen/activity_horizontal_margin"
-    android:paddingRight="@dimen/activity_horizontal_margin"
-    android:paddingTop="@dimen/activity_vertical_margin"
     tools:context="com.example.jianhuayang.myfragments.MainActivity">
 
     <Button
         android:id="@+id/dynamicFragments"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:onClick="onButtonClick"
-        android:text="Dynamic fragments" />
+        android:text="Dynamic fragments"/>
 
     <Button
         android:id="@+id/listFragment"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:onClick="onButtonClick"
-        android:text="List Fragment" />
+        android:text="List Fragment"/>
 
     <Button
         android:id="@+id/multipanel"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:onClick="onButtonClick"
-        android:text="Multipanel" />
+        android:text="Multipanel"/>
 
     <fragment
         android:id="@+id/fragment"
-        android:name="com.example.jianhuayang.myfragments.BlankFragment"
+        android:name="layout.BlankFragment"
         android:layout_width="match_parent"
         android:layout_height="0dp"
         android:layout_weight="1"
-        tools:layout="@layout/fragment_blank" />
+        tools:layout="@layout/fragment_blank"/>
 
     <fragment
         android:id="@+id/fragment2"
-        android:name="com.example.jianhuayang.myfragments.BlankFragment2"
+        android:name="layout.BlankFragment2"
         android:layout_width="match_parent"
         android:layout_height="0dp"
         android:layout_weight="1"
-        tools:layout="@layout/fragment_blank2" />
+        tools:layout="@layout/fragment_blank2"/>
 </LinearLayout>

old(needs_updating)/Week_05_AdapterViews_and_Fragments/MyFragments_copy/app/src/main/res/layout/activity_multi_panel.xml → Week_05_AdapterViews_and_Fragments/MyFragments/app/src/main/res/layout/activity_multi_panel.xml

@@ -1,16 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/activity_multi_panel"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="horizontal"
-    android:paddingBottom="@dimen/activity_vertical_margin"
-    android:paddingLeft="@dimen/activity_horizontal_margin"
-    android:paddingRight="@dimen/activity_horizontal_margin"
-    android:paddingTop="@dimen/activity_vertical_margin"
     tools:context="com.example.jianhuayang.myfragments.MultiPanelActivity">
-
     <FrameLayout
         android:id="@+id/fragmentLeft"
         android:layout_width="0dp"