添加各方法使用示例

README.md

@@ -3,4 +3,6 @@ Safe Java-JS Bridge In Android WebView
 
 achieve a safe and reliable solution for webview calling java method in js, meanwhile calling js function in java
 
+![image](https://github.com/pedant/safe-java-for-webview-js/raw/master/app-sample-screenshot.png)
+
 more detail: http://www.pedant.cn/2014/07/04/webview-js-java-interface-research/

assets/test.html

@@ -119,13 +119,39 @@ <h3>Java Interface 可用接口列表测试</h3>
         <button onclick="HostApp.alert(JSON.stringify(HostApp.retBackPassJson({'b1': 'back-value1', 'b2': 'back-value2'})));">测试</button>
     </li>
 
+    <br/>
+    <li>
+        传入回调的js函数给Java方法,设定3秒后回调<br/>
+        代码：<br/>
+        <div>
+            HostApp.delayJsCallBack(3, 'call back haha', function (msg) {
+                HostApp.alert(msg);
+            });
+        </div>
+        <button onclick="HostApp.delayJsCallBack(3, 'call back haha', function (msg) {HostApp.alert(msg);});">测试</button>
+    </li>
+
+    <br/>
+    <li>
+        注册浏览器滚动到底部时的JS回调函数<br/>
+        代码：<br/>
+        <div>
+            if (HostApp.existVerticalScrollbar()) {
+                HostApp.setOnScrollBottomListener (40, function (contentHeight) {
+                    HostApp.toast("reach content(height " + contentHeight + ") bottom");
+                });
+            }
+        </div>
+        <button style="width: 150px;" onclick="HostApp.resetContentHeight();window.scroll(0, window.document.body.scrollHeight);">直接滚动到底部</button>
+    </li>
+
     <br/>
     <li>
         重载方法测试-执行整型定义<br/>
         代码：<br/>
         <div>
             HostApp.alert(
-                HostApp.overloadMethod(1)
+            HostApp.overloadMethod(1)
             );
         </div>
         <button onclick="HostApp.alert(HostApp.overloadMethod(1));">测试</button>
@@ -137,22 +163,32 @@ <h3>Java Interface 可用接口列表测试</h3>
         代码：<br/>
         <div>
             HostApp.alert(
-                HostApp.overloadMethod('1212')
+            HostApp.overloadMethod('12adadad')
+            );
+        </div>
+        <button onclick="HostApp.alert(HostApp.overloadMethod('12adadad'));">测试</button>
+    </li>
+
+    <br/>
+    <li>
+        从Java层返回Java对象<br/>
+        代码：<br/>
+        <div>
+            HostApp.alert(
+                HostApp.retJavaObject()[0].intField
             );
         </div>
-        <button onclick="HostApp.alert(HostApp.overloadMethod('1212'));">测试</button>
+        <button onclick="HostApp.alert(HostApp.retJavaObject()[0].intField);">测试</button>
     </li>
 </ul>
 
 
 <script type="text/javascript">
     $(function () {
         //HostApp.alert("document ready now");
-        if (HostApp.existVerticalScrollbar()) {
-            HostApp.setOnScrollBottomListener (40, function (contentHeight) {
-                HostApp.toast("reach content(height " + contentHeight + ") bottom");
-            });
-        }
+        HostApp.setOnScrollBottomListener (40, function (contentHeight) {
+            HostApp.toast("reach content(height " + contentHeight + ") bottom");
+        });
     });
 </script>
 

src/cn/pedant/SafeJava4WebviewJS/webview/BaseWebView.java

@@ -324,6 +324,10 @@ protected void onScrollChanged(int newX, int newY, int oldX, int oldY) {
         }
     }
 
+    public void resetContentHeight () {
+        mCurrContentHeight = 0;
+    }
+
     public void setOnVerticalScrolledListener(OnVerticalScrolledListener listener) {
         mVScrolledListener = listener;
     }

src/cn/pedant/SafeJava4WebviewJS/webview/bridge/HostJsScope.java

@@ -16,11 +16,14 @@
 import cn.pedant.SafeJava4WebviewJS.R;
 import cn.pedant.SafeJava4WebviewJS.util.EnvironUtil;
 import cn.pedant.SafeJava4WebviewJS.util.Log;
+import cn.pedant.SafeJava4WebviewJS.util.TaskExecutor;
 import cn.pedant.SafeJava4WebviewJS.webview.BaseWebView;
 import org.json.JSONException;
 import org.json.JSONObject;
 
+import java.util.ArrayList;
 import java.util.Iterator;
+import java.util.List;
 
 //HostJsScope中需要被JS调用的函数，必须定义成public static，且必须包含WebView这个参数
 public class HostJsScope {
@@ -122,6 +125,10 @@ public static void goBack (WebView view) {
         }
     }
 
+    public static void resetContentHeight (WebView view) {
+        ((BaseWebView)view).resetContentHeight();
+    }
+
     /**
      * 注册浏览器滚动到底部时的回调对象
      * @param view 浏览器
@@ -180,4 +187,29 @@ public static int overloadMethod(WebView view, int val) {
     public static String overloadMethod(WebView view, String val) {
         return val;
     }
+
+    public static class RetJavaObj {
+        public int intField;
+        public String strField;
+        public boolean boolField;
+    }
+
+    public static List<RetJavaObj> retJavaObject(WebView view) {
+        RetJavaObj obj = new RetJavaObj();
+        obj.intField = 1;
+        obj.strField = "mine str";
+        obj.boolField = true;
+        List<RetJavaObj> rets = new ArrayList<RetJavaObj>();
+        rets.add(obj);
+        return rets;
+    }
+
+    public static void delayJsCallBack(WebView view, int ms, final String backMsg, final JsCallback jsCallback) {
+        TaskExecutor.scheduleTaskOnUiThread(ms*1000, new Runnable() {
+            @Override
+            public void run() {
+                jsCallback.apply(backMsg);
+            }
+        });
+    }
 }