WebView设置

代码
package com.example.webviewdemo1409s;

import java.net.URLEncoder;
import java.security.spec.EncodedKeySpec;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.webkit.JavascriptInterface;
import android.webkit.JsPromptResult;
import android.webkit.JsResult;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.EditText;

public class MainActivity extends Activity {

private WebView mWebView;
private ProgressDialog mDlg;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    // setContentView(new WebView(this));

    // 从布局文件中查找webview
    mWebView = (WebView) findViewById(R.id.web);
    // 加载本地资源
    // mWebView.loadUrl("file:///android_asset/test.html");
    // 加载远程资源

    String data = "
rdgdgdgd
百度";
    String mimeType = "text/html; charset=utf-8";
    // mWebView.loadData(data, mimeType , null);

    // 直接可以解决中文乱码的问题
    // mWebView.loadDataWithBaseURL(null, data, "text/html", "utf-8", null);
    // 获取webView设置对象
    WebSettings settings = mWebView.getSettings();
    settings.setBuiltInZoomControls(true);

    // setPluginEnable已经弃用了
    settings.setPluginsEnabled(false);
    settings.setJavaScriptEnabled(true);
    // 使用webSettings.setPluginState(WebSettings.PluginState.ON);可以代替，
    // 但是这个方法在API18之后也弃用了，因为adobe不再开发新的flash移动版了
    settings.setPluginState(WebSettings.PluginState.ON);

    // 设置加载
    mWebView.setWebViewClient(new WebViewClient() {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;
        }

        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            // 加载页面时
            super.onPageStarted(view, url, favicon);
            if (mDlg == null) {
                mDlg = ProgressDialog.show(MainActivity.this, "提示", "加载……");
            }
        }

        @Override
        public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
            super.onReceivedError(view, errorCode, description, failingUrl);
            // 关闭加载框
            mDlg.dismiss();
        }

        @Override
        public void onPageFinished(WebView view, String url) {
            // 页面加载完成时执行
            super.onPageFinished(view, url);
            // 关闭加载框
            mDlg.dismiss();
        }
    });


    mWebView.setWebChromeClient(new WebChromeClient(){

        @Override
        public boolean onJsAlert(WebView view, String url, String message, final JsResult result) {
            //提示框
            AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
            builder.setTitle("提示框");
            builder.setMessage(message);
            builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    result.confirm();
                }
            });
            builder.show();
            return true;
        }


        @Override
        public void onReceivedTitle(WebView view, String title) {
            //接受标题
            super.onReceivedTitle(view, title);
        }


        @Override
        public boolean onJsConfirm(WebView view, String url, String message, final JsResult result) {
            //确认框
            AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
            builder.setTitle("提示框");
            builder.setMessage(message);
            builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    result.confirm();
                }
            });
            builder.setNegativeButton("NO", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    result.cancel();;
                }
            });
            builder.show();

// URLEncoder.encode(s)
return true;
}

        @Override
        public boolean onJsPrompt(WebView view, String url, String message, String defaultValue,
                final JsPromptResult result) {

            //确认框
            AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
            builder.setTitle("输入框");
            builder.setMessage(message);
            //输入框
            final EditText et = new EditText(MainActivity.this);
            builder.setView(et);
            builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    result.confirm(et.getText().toString());
                }
            });
            builder.setNegativeButton("NO", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    result.cancel();;
                }
            });
            builder.show();

            return true;
        }
    });


    mWebView.addJavascriptInterface(new JSInterface(), "jsobj");

    mWebView.loadUrl("file:///android_asset/test.html");

}

class JSInterface {
    @JavascriptInterface
    public String getName(){
        return "陈振国";
    }

    @JavascriptInterface
    public void callJS(){
        mWebView.loadUrl("javascript:show();");
    }
}

}