|
package com.ch.day9_webviewdemo;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.spec.EncodedKeySpec;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.util.Log;
import android.util.Xml.Encoding;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.webkit.JavascriptInterface;
import android.webkit.JsResult;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.ExpandableListView;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
private Button goback;
private Button tj;
public static final String HTML_URL = "http://169.254.70.111:8080/serverof1407a/myHtml.html";
private TextView tv;
private WebView wv;
Context mcontext;
class MyClass1{
@JavascriptInterface
public void sendData(String name,String pass,String email){
Toast.makeText(mcontext, name+","+pass+","+email, 0).show();
//网络连接，发送到服务器保存，同时也可以保存到本地sqlite
//跳转到注册成功页面
// Intent it = new Intent(mcontext,第二个页面);
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mcontext = this;
init();
}
public void init(){
wv = (WebView) findViewById(R.id.wv);
goback = (Button) findViewById(R.id.goback);
tj = (Button) findViewById(R.id.tj);
//点击 提交，通过android调用js的checkAll函数
tj.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
wv.loadUrl("javascript:checkAll('android调用的验证')");
}
});
WebSettings setting = wv.getSettings();//获得websetting，设置一些参数
setting.setDefaultTextEncodingName("utf-8");//设置编码，解决乱码
//设置普通js有效
setting.setJavaScriptEnabled(true);
//第一种方式加载现成的html(两个来源：网络+本地)
// wv.loadUrl(HTML_URL);//加载服务器的html资源
wv.loadUrl("file:///android_asset/myHtml.html");//加载本地assets下的html
//向js中推入一个对象，供调用
wv.addJavascriptInterface(new MyClass1(), "myclass");
//监听webview的url的重新定位
wv.setWebViewClient(new WebViewClient(){
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
// TODO Auto-generated method stub
Log.i("TAG", "当前webview加载的新url:::"+url);
// if(url.equals("http://www.baidu.com/")){
// wv.loadUrl("http://www.jd.com");
// }
return super.shouldOverrideUrlLoading(view, url);
}
});
//处理alert无效
wv.setWebChromeClient(new WebChromeClient(){
//处理alert无效,当js弹出alert框的时候，会调用这个方法
@Override
public boolean onJsAlert(WebView view, String url, String message,
JsResult result) {
// TODO Auto-generated method stub
//用dialog对话框替代系统自带的alert弹出
result.cancel();//关闭系统和自带的alert警告框
//创建android的对话框替换
AlertDialog.Builder dialog = new AlertDialog.Builder(MainActivity.this);
dialog.setTitle("警告框").setIcon(R.drawable.ic_launcher).setMessage(message)
.setPositiveButton("确定", null)
.create().show();
return true;
}
//处理confirm无效,当js弹出confirm框的时候，会调用这个方法
@Override
public boolean onJsConfirm(WebView view, String url,
String message, final JsResult result) {
// TODO Auto-generated method stub
//创建android的对话框替换
AlertDialog.Builder dialog = new AlertDialog.Builder(MainActivity.this);
dialog.setTitle("确认提示框").setIcon(R.drawable.ic_launcher).setMessage(message)
.setPositiveButton("确定", new DialogInterface.OnClickListener(){
@Override
public void onClick(DialogInterface dialog, int which) {
result.confirm();//点击dailog的确认，提交系统的确认框
}
})
.setNegativeButton("取消", new DialogInterface.OnClickListener(){
@Override
public void onClick(DialogInterface dialog, int which) {
result.cancel();//点击dailog的取消，取消系统的确认框
}
})
.create().show();
return true;
}
});
//
goback.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(wv.canGoBack()){
wv.goBack();//后退
// wv.goForward();//前进
// wv.zoomIn();//放大
// wv.zoomOut();//缩小
}
}
});
// //第二种方式加载现拼写的html
// StringBuffer sb = new StringBuffer();
// sb.append("<html><head></head><body><input type='submit' value='提交（app'/></body></html>");
// wv.loadData(sb.toString(), "text/html", "utf-8");
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
|
|
浙公网安备 33010602011771号