如果不使用系统自带的TitleBar(即Activity被设置@android:style/Theme.NoTitleBar),那就需要自己来写进度条了,这里封装了一个自定义控件和加载网页的公共Activity,方便使用。
二、自定义控件
带进度条的WebView
@SuppressWarnings("deprecation") public class ProgressWebView extends WebView { private ProgressBar progressbar; public ProgressWebView(Context context, AttributeSet attrs) { super(context, attrs); progressbar = new ProgressBar(context, null, android.R.attr.progressBarStyleHorizontal); progressbar.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, 3, 0, 0)); addView(progressbar); // setWebViewClient(new WebViewClient(){}); setWebChromeClient(new WebChromeClient()); } public class WebChromeClient extends android.webkit.WebChromeClient { @Override public void onProgressChanged(WebView view, int newProgress) { if (newProgress == 100) { progressbar.setVisibility(GONE); } else { if (progressbar.getVisibility() == GONE) progressbar.setVisibility(VISIBLE); progressbar.setProgress(newProgress); } super.onProgressChanged(view, newProgress); } } @Override protected void onScrollChanged(int l, int t, int oldl, int oldt) { LayoutParams lp = (LayoutParams) progressbar.getLayoutParams(); lp.x = l; lp.y = t; progressbar.setLayoutParams(lp); super.onScrollChanged(l, t, oldl, oldt); } }
三、加载网页的公共Activity
public class WebActivity extends BaseActivity { private ProgressWebView webview; private String url; private String name; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.commom_web); // ~~~ 获取参数 url = getIntent().getStringExtra("url"); name = getIntent().getStringExtra("name"); // ~~~ 绑定控件 webview = (ProgressWebView) findViewById(R.id.webview); // ~~~ 设置数据 titleText.setText(name); webview.getSettings().setJavaScriptEnabled(true); webview.setDownloadListener(new DownloadListener() { @Override public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) { if (url != null && url.startsWith("http://")) startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url))); } }); webview.loadUrl(url); } }
commom_web.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <include layout="@layout/include_title" /> <com.nmbb.ui.widget.ProgressWebView android:id="@+id/webview" android:layout_width="fill_parent" android:layout_height="fill_parent" /> </LinearLayout>