package com.example.exp14_10_1;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.DialogInterface;

import android.os.Bundle;

import android.text.Editable;

import android.text.method.KeyListener;

import android.util.Log;

import android.view.KeyEvent;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.View.OnKeyListener;

import android.webkit.WebChromeClient;

import android.webkit.WebView;

import android.webkit.WebViewClient;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.EditText;

import android.widget.Toast;

public class MainActivity extends Activity {

private WebView wv;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

wv = (WebView) findViewById(R.id.webView1);

wv.getSettings().setJavaScriptEnabled(true);

wv.setWebChromeClient(new WebChromeClient());

wv.setWebViewClient(new WebViewClient());

// wv.setWebViewClient(new WebViewClient());如果不适用该句代码将使用内置浏览器

Button back = (Button) findViewById(R.id.back);

Button forward = (Button) findViewById(R.id.forward);

Button GO = (Button) findViewById(R.id.go);

final EditText urlText = (EditText) findViewById(R.id.editTextUrl);

back.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

wv.goBack();

}

});

forward.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

wv.goForward();

}

});

GO.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

String urlStr = urlText.getText().toString();

if (!"".equals(urlStr)) {

openBrowser(urlStr);

} else {

openBrowser(urlStr);

showDialog();

}

}

});

urlText.setOnKeyListener(new OnKeyListener() {

public boolean onKey(View v, int keyCode, KeyEvent event) {

// TODO Auto-generated method stub

if (keyCode == KeyEvent.KEYCODE_ENTER) {

String urlStr2 = urlText.getText().toString();

if (!"".equals(urlStr2)) {

openBrowser(urlStr2);

return true;///不让文本框换行

} else {

openBrowser(urlStr2);

showDialog();

return true;//不让文本框换行，但showDialog显示了两次，为何呢？？

}

}

///return true;这会导致文本内容无法删除，删除没反应

return false;

}

});

}// /onCreate

private void openBrowser(String url) {

Toast.makeText(MainActivity.this, "正在加载" + url, Toast.LENGTH_SHORT)

.show();

wv.loadUrl(url);

}

private void showDialog() {

new AlertDialog.Builder(MainActivity.this).setTitle("浏览器")

.setMessage("请输入网址!")

.setPositiveButton("确定", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

Log.d("webview", "单击确定按钮");

};

}).show();// //new DialogInterface.OnClickListener()

}// /showDialog

}

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical" >

android:id="@+id/editText1"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="http://192.168.1.105:8080/bbs"

android:ems="10" >

android:id="@+id/button1"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="Go" />

android:id="@+id/webView1"

android:layout_width="match_parent"

android:layout_height="match_parent" />