webview 类似浏览器

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package com.lilin.browser;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.Window;import android.view.View.OnClickListener;import android.webkit.WebChromeClient;import android.webkit.WebView;import android.webkit.WebViewClient;import android.widget.Button;import android.widget.Toast;public class Browser extends Activity implements OnClickListener {WebView webView;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);getWindow().requestFeature(Window.FEATURE_PROGRESS);setContentView(R.layout.main);init();webView.setWebChromeClient(new WebChromeClient() { // 为WebView设置WebChromeClient@Overridepublic void onProgressChanged(WebView view, int newProgress) {// 重写onProgressChanged方法Browser.this.setProgress(newProgress * 100);}});webView.setWebViewClient(new WebViewClient() { // 为WebView设置WebViewClientpublic void onReceivedError(WebView view, int errorCode,String description, String failingUrl) {// 重写onReceivedError方法Toast.makeText(Browser.this, "Sorry!" + description,2000).show();}});}private void init() {webView = (WebView) findViewById(R.id.wv);/* webview的设置 */Button btn = (Button) findViewById(R.id.btn); // 获取Button对象// 设置前进后退按钮Button btnForward = (Button) findViewById(R.id.btnForward);Button btnBack = (Button) findViewById(R.id.btnBack);btn.setOnClickListener(this);btnForward.setOnClickListener(this);btnBack.setOnClickListener(this);}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn:if (webView.canGoForward()) { // 判断是否能够前进webView.goForward();} else {Toast.makeText(Browser.this, "对不起，您现在不能前进！", 2000).show();}break;case R.id.btnForward:if (webView.canGoForward()) { // 判断是否能够前进webView.goForward();} else {Toast.makeText(Browser.this, "对不起，您现在不能前进！", 2000).show();}break;case R.id.btnBack:if (webView.canGoBack()) { // 判断是否能够前进webView.goBack();} else {Toast.makeText(Browser.this, "对不起，您现在不能后退！", 2000).show();}break;default:break;}}}

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<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical" android:layout_width="fill_parent"android:layout_height="fill_parent"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="horizontal" android:layout_width="fill_parent"android:layout_height="wrap_content"><Button android:id="@+id/btnForward" android:layout_width="wrap_content"android:layout_height="wrap_content" android:text="@string/forward" /><Button android:id="@+id/btnBack" android:layout_width="wrap_content"android:layout_height="wrap_content" android:text="@string/back" /><EditText android:id="@+id/et" android:layout_width="150dp"android:layout_height="wrap_content" android:singleLine="true"android:selectAllOnFocus="true" android:hint="@string/et" /><Button android:id="@+id/btn" android:layout_width="wrap_content"android:layout_height="wrap_content" android:layout_gravity="right"android:text="@string/btn" /></LinearLayout><WebView android:id="@+id/wv" android:layout_width="wrap_content"android:layout_height="fill_parent" /></LinearLayout>

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