方法一：

使用webview控件

wv = (WebView) findViewById(R.id.webView1);
wv.getSettings().setJavaScriptEnabled(true);
wv.setScrollBarStyle(0);
WebSettings webSettings = wv.getSettings();
webSettings.setAllowFileAccess(true);
webSettings.setBuiltInZoomControls(true);
wv.loadUrl("http://www.baidu.com");
//加载数据
wv.setWebChromeClient(new WebChromeClient() {
@Override
public void onProgressChanged(WebView view, int newProgress) {
if (newProgress == 100) {
MainActivity.this.setTitle("加载完成");
} else {
MainActivity.this.setTitle("加载中.......");

}
}
});
//这个是当网页上的连接被点击的时候
wv.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(final WebView view,
final String url) {
loadurl(view, url);
return true;
}
});
 // goBack()表示返回webView的上一页面
public boolean onKeyDown(int keyCoder, KeyEvent event) {
if (wv.canGoBack() && keyCoder == KeyEvent.KEYCODE_BACK) {
wv.goBack();
return true;
}
return false;
}

调用系统浏览器

Uri uri = Uri.parse("http://google.com");  
Intent it = new Intent(Intent.ACTION_VIEW, uri);  
startActivity(it);