Init commit

.gitignore

@@ -0,0 +1,8 @@
+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures

app/.gitignore

@@ -0,0 +1 @@
+/build

app/build.gradle

@@ -0,0 +1,27 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 23
+    buildToolsVersion "23.0.2"
+
+    defaultConfig {
+        applicationId "com.msquare.flex_toolbar"
+        minSdkVersion 15
+        targetSdkVersion 23
+        versionCode 1
+        versionName "1.0"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    testCompile 'junit:junit:4.12'
+    compile 'com.android.support:appcompat-v7:23.3.0'
+    compile 'com.android.support:support-v4:23.3.0'
+}

app/proguard-rules.pro

@@ -0,0 +1,17 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in C:\Users\BosLeo3\AppData\Local\Android\sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}

app/src/androidTest/java/com/msquare/flex_toolbar/ApplicationTest.java

@@ -0,0 +1,13 @@
+package com.msquare.flex_toolbar;
+
+import android.app.Application;
+import android.test.ApplicationTestCase;
+
+/**
+ * <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
+ */
+public class ApplicationTest extends ApplicationTestCase<Application> {
+    public ApplicationTest() {
+        super(Application.class);
+    }
+}

app/src/main/AndroidManifest.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.msquare.flex_toolbar">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/msquare/flex_toolbar/BlankFragment.java

@@ -0,0 +1,53 @@
+package com.msquare.flex_toolbar;
+
+import android.content.Context;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Activities that contain this fragment must implement the
+ * Use the {@link BlankFragment#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class BlankFragment extends Fragment {
+    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+    private static final String ARG_PARAM1 = "param1";
+
+    private String mTitle;
+
+    public BlankFragment() {
+        // Required empty public constructor
+    }
+
+    public static BlankFragment newInstance(String title) {
+        BlankFragment fragment = new BlankFragment();
+        Bundle args = new Bundle();
+        args.putString(ARG_PARAM1, title);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getArguments() != null) {
+            mTitle = getArguments().getString(ARG_PARAM1);
+        }
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        View v = inflater.inflate(R.layout.fragment_blank, container, false);
+        ((TextView)(v.findViewById(R.id.sample_text))).setText("<" + mTitle + ">");
+        return v;
+    }
+}

app/src/main/java/com/msquare/flex_toolbar/MainActivity.java

@@ -0,0 +1,110 @@
+package com.msquare.flex_toolbar;
+
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentStatePagerAdapter;
+import android.support.v4.view.ViewPager;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.support.v7.widget.Toolbar;
+import android.util.Log;
+
+public class MainActivity extends AppCompatActivity implements ViewPager.OnPageChangeListener {
+
+    private static final String TAG = "MainActivity";
+    Toolbar mToolbar;
+    ViewPager mViewPager;
+
+    int heightForPage0 = 150;
+    int heightForPage1 = 400;
+    int heightForPage2 = 300;
+    int heightForPage3 = 600;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        mToolbar = (Toolbar) findViewById(R.id.toolBar);
+        mViewPager = (ViewPager) findViewById(R.id.pager);
+
+        mViewPager.setAdapter(new MyPagerAdapter(getSupportFragmentManager()));
+        setSupportActionBar(mToolbar);
+
+        mViewPager.addOnPageChangeListener(this);
+        mToolbar.setMinimumHeight(heightForPage0);
+    }
+
+    @Override
+    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
+        Log.d(TAG,positionOffset+"");
+
+        int currentHeight;
+        int nextHeight;
+
+        switch (position) {
+            case 0:
+                currentHeight = heightForPage0;
+                nextHeight = heightForPage1;
+                calculateHeightAndApply(currentHeight, nextHeight, positionOffset);
+                break;
+            case 1:
+                currentHeight = heightForPage1;
+                nextHeight = heightForPage2;
+                calculateHeightAndApply(currentHeight, nextHeight, positionOffset);
+                break;
+            case 2:
+                currentHeight = heightForPage2;
+                nextHeight = heightForPage3;
+                calculateHeightAndApply(currentHeight, nextHeight, positionOffset);
+                break;
+            case 3:
+                // for last page we don't have to worry about it.
+                // bcoz there is no next page available;
+                break;
+        }
+    }
+
+    private void calculateHeightAndApply(int currentHeight, int nextHeight, float positionOffset) {
+        if (positionOffset==0) {
+            return;
+        }
+        int diff = nextHeight - currentHeight;
+        int newHeight = (int) ((positionOffset*diff));
+        mToolbar.setMinimumHeight(currentHeight+newHeight);
+    }
+
+    @Override
+    public void onPageSelected(int position) {}
+
+    @Override
+    public void onPageScrollStateChanged(int state) {}
+
+    class MyPagerAdapter extends FragmentStatePagerAdapter {
+
+        public MyPagerAdapter(FragmentManager fm) {
+            super(fm);
+        }
+
+        @Override
+        public Fragment getItem(int position) {
+            switch (position) {
+                case 0:
+                    return BlankFragment.newInstance("My toolbar height is :" + heightForPage0 + " px") ;
+                case 1:
+                    return BlankFragment.newInstance("My toolbar height is :" + heightForPage1 + " px");
+                case 2:
+                    return BlankFragment.newInstance("My toolbar height is :" + heightForPage2 + " px");
+                case 3:
+                    return BlankFragment.newInstance("My toolbar height is :" + heightForPage3 + " px");
+                default:
+                    return null;
+            }
+        }
+
+        @Override
+        public int getCount() {
+            return 4;
+        }
+    }
+}