first commit

.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="src" path="gen"/>
+	<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
+	<classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.LIBRARIES"/>
+	<classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.DEPENDENCIES"/>
+	<classpathentry kind="output" path="bin/classes"/>
+</classpath>

.gitignore

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+gen/
+bin/
+.setting/
+

.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>PullToExpand</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ApkBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.chiemy.pulltoexpand"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <uses-sdk
+        android:minSdkVersion="14"
+        android:targetSdkVersion="19" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name=".MainActivity"
+            android:label="@string/app_name" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

proguard-project.txt

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+# To enable ProGuard in your project, edit project.properties
+# to define the proguard.config property as described in that file.
+#
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in ${sdk.dir}/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the ProGuard
+# include property in project.properties.
+#
+# 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 *;
+#}

project.properties

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+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system edit
+# "ant.properties", and override values to adapt the script to your
+# project structure.
+#
+# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
+#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
+
+# Project target.
+target=android-19

res/layout/activity_main.xml

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+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context="com.chiemy.pulltoexpand.MainActivity" >
+
+    <com.chiemy.pulltoexpand.FlexibleListView
+        android:id="@+id/pullExpandListView1"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        >
+
+    </com.chiemy.pulltoexpand.FlexibleListView>
+
+</RelativeLayout>

res/layout/item.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#ff0000"
+     >
+    <TextView 
+        android:id="@+id/text"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="10dp"
+        />
+
+</RelativeLayout>

res/menu/main.xml

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+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    tools:context="com.chiemy.pulltoexpand.MainActivity" >
+
+    <item
+        android:id="@+id/action_settings"
+        android:orderInCategory="100"
+        android:showAsAction="never"
+        android:title="@string/action_settings"/>
+
+</menu>

res/values-v11/styles.xml

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+<resources>
+
+    <!--
+        Base application theme for API 11+. This theme completely replaces
+        AppBaseTheme from res/values/styles.xml on API 11+ devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Holo.Light">
+        <!-- API 11 theme customizations can go here. -->
+    </style>
+
+</resources>

res/values-v14/styles.xml

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+<resources>
+
+    <!--
+        Base application theme for API 14+. This theme completely replaces
+        AppBaseTheme from BOTH res/values/styles.xml and
+        res/values-v11/styles.xml on API 14+ devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Holo.Light.DarkActionBar">
+        <!-- API 14 theme customizations can go here. -->
+    </style>
+
+</resources>

res/values-w820dp/dimens.xml

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+<resources>
+
+    <!--
+         Example customization of dimensions originally defined in res/values/dimens.xml
+         (such as screen margins) for screens with more than 820dp of available width. This
+         would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively).
+    -->
+    <dimen name="activity_horizontal_margin">64dp</dimen>
+
+</resources>

res/values/dimens.xml

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+<resources>
+
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+
+</resources>

res/values/strings.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string name="app_name">PullToExpand</string>
+    <string name="hello_world">Hello world!</string>
+    <string name="action_settings">Settings</string>
+
+</resources>

res/values/styles.xml

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+<resources>
+
+    <!--
+        Base application theme, dependent on API level. This theme is replaced
+        by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Light">
+        <!--
+            Theme customizations available in newer API levels can go in
+            res/values-vXX/styles.xml, while customizations related to
+            backward-compatibility can go here.
+        -->
+    </style>
+
+    <!-- Application theme. -->
+    <style name="AppTheme" parent="AppBaseTheme">
+        <!-- All customizations that are NOT specific to a particular API-level can go here. -->
+    </style>
+
+</resources>

src/com/chiemy/pulltoexpand/FlexibleListView.java

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+package com.chiemy.pulltoexpand;
+
+import com.nineoldandroids.view.ViewPropertyAnimator;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.animation.AccelerateInterpolator;
+import android.widget.ListView;
+
+/**
+ * 具有弹性效果的ListView。主要是实现父类dispatchTouchEvent方法和OnGestureListener中onScroll方法。
+ * 
+ * @author E
+ */
+public class FlexibleListView extends ListView {
+	private static final int MAX_DELTAY = 200;
+	private Context context = null;
+	private boolean outTopBound = false;
+
+	public FlexibleListView(Context context, AttributeSet attrs) {
+		super(context, attrs);
+		this.context = context;
+	}
+
+	public FlexibleListView(Context context, AttributeSet attrs, int defStyle) {
+		super(context, attrs, defStyle);
+		this.context = context;
+	}
+
+	public FlexibleListView(Context context) {
+		super(context);
+		this.context = context;
+	}
+
+	private float startY;
+	private float deltaY;
+
+	private float preY;
+	@Override
+	public boolean onTouchEvent(MotionEvent ev) {
+		switch(ev.getAction()){
+		case MotionEvent.ACTION_DOWN:
+			break;
+		case MotionEvent.ACTION_MOVE:
+			float currentY = ev.getY();
+			if(isOutTopBound()){
+				if(startY <= 0){
+					startY = currentY;
+				}
+				deltaY = currentY - startY;
+				deltaY = Math.min(deltaY, MAX_DELTAY);
+				if(deltaY >= 0){
+					outTopBound = true;
+					for(int i = 1 ; i < getChildCount() ; i++){
+						View child = getChildAt(i);
+						child.setTranslationY(i*deltaY/2);
+					}
+					if(currentY - preY < 0){
+						return true;
+					}
+				}
+				preY = currentY;
+			}
+			break;
+		case MotionEvent.ACTION_CANCEL:
+		case MotionEvent.ACTION_UP:
+			if(outTopBound){
+				for(int i = 1 ; i < getChildCount() ; i++){
+					View child = getChildAt(i);
+					ViewPropertyAnimator.animate(child).translationY(0).setDuration(300).setInterpolator(new AccelerateInterpolator());
+				}
+			}
+			outTopBound = false;
+			startY = 0;
+			preY = 0;
+			break;
+		}
+		return super.onTouchEvent(ev);
+	}
+
+	private boolean isOutTopBound() {
+		int firstVisPos = getFirstVisiblePosition();
+		if(firstVisPos == 0){
+			View firstView = getChildAt(firstVisPos);
+			if(firstView != null && firstView.getTop() >= 0){
+				return true;
+			}else{
+				return false;
+			}
+		}
+		return false;
+	}
+
+
+}