顶部带进度条的Webview

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58

package com.droidyue.demo.webviewprogressbar; import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.webkit.WebChromeClient; import android.webkit.WebView; import android.widget.ProgressBar; import com.droidyue.demo.webviewprogressbar.R; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final ProgressBar bar = (ProgressBar)findViewById(R.id.myProgressBar); final WebView webView = (WebView)findViewById(R.id.myWebView); webView.setWebChromeClient(new WebChromeClient() { @Override public void onProgressChanged(WebView view, int newProgress) { if (newProgress == 100) { bar.setVisibility(View.INVISIBLE); } else { if (View.INVISIBLE == bar.getVisibility()) { bar.setVisibility(View.VISIBLE); } bar.setProgress(newProgress); } super.onProgressChanged(view, newProgress); } }); findViewById(R.id.myButton).setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { webView.reload(); } }); final String url = "http://droidyue.com"; webView.loadUrl(url); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } }

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context=".MainActivity" > <Button android:id="@+id/myButton" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Reload" /> <ProgressBar style="?android:attr/progressBarStyleHorizontal" android:id="@+id/myProgressBar" android:layout_below="@id/myButton" android:layout_width="match_parent" android:layout_height="5px" /> <WebView android:id="@+id/myWebView" android:layout_below="@id/myProgressBar" android:layout_width="match_parent" android:layout_height="match_parent" /> </RelativeLayout>

1

<uses-permission android:name="android.permission.INTERNET"/>