first commit

.gitignore

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+/build

build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion "25.0.2"
+
+    defaultConfig {
+        applicationId "com.lorien.wl"
+        minSdkVersion 15
+        targetSdkVersion 25
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    compile 'com.android.support:appcompat-v7:25.3.1'
+    compile 'com.android.support.constraint:constraint-layout:1.0.1'
+    testCompile 'junit:junit:4.12'
+}

proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /Users/lorienzhang/Library/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 *;
+#}
+
+# 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

src/androidTest/java/com/lorien/wl/ExampleInstrumentedTest.java

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+package com.lorien.wl;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumentation test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("com.lorien.wl", appContext.getPackageName());
+    }
+}

src/main/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.lorien.wl">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <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"/>
+
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

src/main/java/com/lorien/wl/MainActivity.java

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+package com.lorien.wl;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.webkit.WebView;
+import android.webkit.WebViewClient;
+import android.widget.ArrayAdapter;
+import android.widget.ListAdapter;
+import android.widget.ListView;
+
+import com.lorien.wl.view.WLLayout;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class MainActivity extends AppCompatActivity {
+
+    private List<String> list = new ArrayList<>();
+    private WLLayout wl;
+
+    String htmlString = "<h1>Title1</h1><p>This is HTML text. <i>Formatted in italics.</i><br>Anothor Line.</p><br>" +
+            "<img src=\"http://img.blog.csdn.net/20160405153830915\" width=\"330px\" height=\"330px\"/><br>" +
+            "<h1>Title2</h1><p>This is HTML text. <i>Formatted in italics.</i><br>Anothor Line.</p><br>" +
+            "<img src=\"http://img.blog.csdn.net/20160405153830915\" width=\"330px\" height=\"330px\"/><br>" +
+            "<h1>Title3</h1><p>This is HTML text. <i>Formatted in italics.</i><br>Anothor Line.</p>" +
+            "<img src=\"http://img.blog.csdn.net/20160405153830915\" width=\"330px\" height=\"330px\"/><br>" +
+            "<h1>Title4</h1><p>This is HTML text. <i>Formatted in italics.</i><br>Anothor Line.</p>" +
+            "<img src=\"http://img.blog.csdn.net/20160405153830915\" width=\"330px\" height=\"330px\"/><br>" +
+            "<h1>Title5</h1><p>This is HTML text. <i>Formatted in italics.</i><br>Anothor Line.</p>" +
+            "<img src=\"http://img.blog.csdn.net/20160405153830915\" width=\"330px\" height=\"330px\"/><br>" +
+            "<h1>Title6</h1><p>This is HTML text. <i>Formatted in italics.</i><br>Anothor Line.</p>" +
+            "<img src=\"http://img.blog.csdn.net/20160405153830915\" width=\"330px\" height=\"330px\"/><br>";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        wl = (WLLayout) findViewById(R.id.wl);
+
+        // WebView
+        WebView myWebView = (WebView) findViewById(R.id.webview);
+        myWebView.loadData(htmlString, "text/html", "utf-8");
+        WebViewClient webViewClient = new WebViewClient() {
+            @Override
+            public boolean shouldOverrideUrlLoading(WebView view, String url) {
+                view.loadUrl(url);
+                return true;
+            }
+        };
+        myWebView.setWebViewClient(webViewClient);
+
+        // ListView
+        for (int i = 0; i < 60; i++) {
+            list.add("评论：" + i);
+        }
+        ListView lv = (ListView) findViewById(R.id.list_view);
+        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, list);
+        lv.setAdapter(adapter);
+        View header = LayoutInflater.from(this).inflate(R.layout.header_view, lv, false);
+        lv.addHeaderView(header);
+    }
+
+}

src/main/java/com/lorien/wl/view/MyListView.java

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+package com.lorien.wl.view;
+
+import android.content.Context;
+import android.os.Build;
+import android.support.annotation.RequiresApi;
+import android.util.AttributeSet;
+import android.widget.ListView;
+import android.widget.OverScroller;
+
+/**
+ * Created by lorienzhang on 2017/5/23.
+ */
+
+public class MyListView extends ListView {
+
+    private FlingRunnable mFlingRunnable;
+
+    public MyListView(Context context) {
+        this(context, null);
+    }
+
+    public MyListView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public MyListView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+
+        mFlingRunnable = new FlingRunnable();
+    }
+
+    public void flingY(int velocityY) {
+//        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.LOLLIPOP) {
+//            fling(velocityY);
+//        } else {
+//
+//        }
+        mFlingRunnable.startFling(velocityY);
+    }
+
+    private class FlingRunnable implements Runnable {
+
+        private final OverScroller mScroller;
+
+        private int mLastFlingY;
+
+        private FlingRunnable() {
+            mScroller = new OverScroller(getContext());
+        }
+
+        @RequiresApi(api = Build.VERSION_CODES.KITKAT)
+        @Override
+        public void run() {
+            if (getChildCount() == 0) {
+                endFling();
+                return;
+            }
+
+            boolean finish = !mScroller.computeScrollOffset()
+                    || mScroller.isFinished();
+            final int y = mScroller.getCurrY();
+            int delta = y - mLastFlingY;
+            if (!finish) {
+                mLastFlingY = y;
+                // ListView自动滚动
+                MyListView.this.scrollListBy(delta);
+                post(this);
+            } else {
+                endFling();
+            }
+        }
+
+        void startFling(int initialVelocity) {
+            int initialY = 0;
+            mLastFlingY = initialY;
+            mScroller.fling(0, initialY, 0, initialVelocity,
+                    0, Integer.MAX_VALUE,
+                    0, Integer.MAX_VALUE);
+            post(this);
+        }
+
+        void endFling() {
+            removeCallbacks(this);
+
+            mScroller.abortAnimation();
+        }
+    }
+}

src/main/java/com/lorien/wl/view/MyWebView.java

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+package com.lorien.wl.view;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.webkit.WebView;
+
+/**
+ * Created by lorienzhang on 2017/5/22.
+ */
+
+public class MyWebView extends WebView {
+
+    private OnScrollChangedCallback mOnScrollChangedCallback;
+
+    public MyWebView(Context context) {
+        super(context);
+    }
+
+    public MyWebView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public MyWebView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    @Override
+    protected void onScrollChanged(int l, int t, int oldl, int oldt) {
+        super.onScrollChanged(l, t, oldl, oldt);
+
+        if (mOnScrollChangedCallback != null) {
+            mOnScrollChangedCallback.onScroll(l, t, l - oldl, t - oldt, canScrollVertically(1));
+        }
+    }
+
+    public void setOnScrollChangedCallback(
+            final OnScrollChangedCallback onScrollChangedCallback) {
+        mOnScrollChangedCallback = onScrollChangedCallback;
+    }
+
+    /**
+     * 如果想要监听WebView的Scroll状态，实现这个借口
+     */
+    public interface OnScrollChangedCallback {
+        void onScroll(int left, int top, int dx, int dy, boolean canScrollUp);
+    }
+}
+