标签：android blog io os java sp strong div on
为了方便网页和应用的交互，安卓系统WebView提供JavaScript网页脚本调用Java类方法的机制。只要调用addJavascriptInterface方法即可映射一个Java对象到JavaScript对象上。
MainActivity.java代码：
package com.apple.browser;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.widget.Toast;
public class MainActivity extends Activity {
private WebView webView;
private Activity activity;
@SuppressLint("SetJavaScriptEnabled")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
activity = this;
webView = (WebView) findViewById(R.id.webview);
webView.loadUrl("file:///android_asset/index.html");
final WebSettings settings = webView.getSettings();
settings.setJavaScriptCanOpenWindowsAutomatically(true);
settings.setJavaScriptEnabled(true);
settings.setSupportZoom(true);
webView.addJavascriptInterface(new JSInvokeClass(), "js2java");
}
public final class JSInvokeClass {
public void back() {
// activity.finish();
Toast.makeText(activity, "通过js调用的Java方法", Toast.LENGTH_SHORT).show();
}
}
}
HTML中代码：
<input type=button name=smt value=‘invoke java‘ onclick="javascript:window.js2java.back();">
XML布局代码：
略
标签：android blog io os java sp strong div on
原文地址：http://www.cnblogs.com/magics/p/4089593.html
