WebviewActivity.java

package com.keju.maomao.activity;

import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.TextView;

import com.keju.maomao.CommonApplication;
import com.keju.maomao.Constants;
import com.keju.maomao.R;
import com.keju.maomao.activity.base.BaseActivity;
import com.umeng.analytics.MobclickAgent;

/**
 * 网页浏览
 * @author zhouyong
 * @version 创建时间：2013-12-5 上午10:28:11
 */
public class WebviewActivity extends BaseActivity implements OnClickListener {
	private ImageButton ibLeft;
	private Button btnRight;
	private TextView tvTitle;
	
	private WebView webView;
	private View progress;
	private String url;
	private String name;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.webview);
		url = getIntent().getExtras().getString(Constants.EXTRA_DATA);
		name = getIntent().getExtras().getString("name");
		findView();
		fillData();
		((CommonApplication) getApplication()).addActivity(this);
	}
	
	@Override
	protected void onResume() {
		super.onResume();
		MobclickAgent.onResume(this);
	}
	
	@Override
	protected void onPause() {
		super.onPause();
		MobclickAgent.onPause(this);
	}

	private void findView() {
		ibLeft = (ImageButton) this.findViewById(R.id.ibLeft);
		ibLeft.setImageResource(R.drawable.ic_btn_left);
		ibLeft.setOnClickListener(this);
		btnRight = (Button) this.findViewById(R.id.btnRight);
		btnRight.setVisibility(View.INVISIBLE);
		tvTitle = (TextView) this.findViewById(R.id.tvTitle);
		tvTitle.setVisibility(View.VISIBLE);
		tvTitle.setText(name);
		tvTitle.setMaxWidth(220);
		tvTitle.setSingleLine();
		ibLeft.setOnClickListener(this);
		progress = findViewById(R.id.progress);
		webView = (WebView) findViewById(R.id.webview);
	}

	private void fillData() {
		
		WebSettings webSettings = webView.getSettings();
		webSettings.setBuiltInZoomControls(true);
		webSettings.setJavaScriptEnabled(true);
		webView.requestFocus();//使WebView内的输入框等获得焦点
		webView.loadUrl(url);
		webView.setWebViewClient(new WebViewClient() {
			// 点击网页里面的链接还是在当前的webView内部跳转，不跳转外部浏览器
			@Override
			public boolean shouldOverrideUrlLoading(WebView view, String url) { 
				view.loadUrl(url);
				return true;
			}
			//可以让webView处理https请求
			@Override
			public void onReceivedSslError(WebView view,
					android.webkit.SslErrorHandler handler,
					android.net.http.SslError error) {
				handler.proceed();
			};
			
			public void onLoadResource(WebView view, String url) {
				
			};
			
			@Override
			public void onPageFinished(WebView view, String url) {
				super.onPageFinished(view, url);
				progress.setVisibility(View.GONE);
			}

		});	
	}

	
	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {
		if(keyCode == KeyEvent.KEYCODE_BACK){
			if (webView.canGoBack()) {
				webView.goBack(); // goBack()表示返回webView的上一页面，而不直接关闭WebView
				return true;
			}else {
				finish();
				return true;
			}
		}
		
		return super.onKeyDown(keyCode, event);
	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.ibLeft:
			finish();
			break;
		default:
			break;
		}
		
	}
}