webView以及seeKbar的使用

 uses-permission android:name="android.permission.INTERNET"  别忘了啊

public class WebPageBackgroundColorBridgeActivity extends Activity {
	private static final String TAG = "WebPageBackgroundColorBridgeActivity";
	private static final int OPAQUE = 0x00FFFFFF;

    private EditText url;
	private WebView webView;
	private Button go;
	private SeekBar colorBar;
	
	/** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        url = (EditText) findViewById(R.id.url);
        go = (Button) findViewById(R.id.go);
        webView = (WebView) findViewById(R.id.webview);
        colorBar = (SeekBar) findViewById(R.id.colorbar);

        // 浏览器的选择
        webView.setWebViewClient(new WebViewClient() {

			/* (non-Javadoc)
			 * @see android.webkit.WebViewClient#shouldOverrideUrlLoading(android.webkit.WebView, java.lang.String)
			 */
			@Override
			public boolean shouldOverrideUrlLoading(WebView view, String url) {
				WebPageBackgroundColorBridgeActivity.this.url.setText(url);
				load();
				return true;
			}
        	
        });
        
        webView.getSettings().setJavaScriptEnabled(true);
        
        // ENTER 按键
        url.setOnKeyListener(new OnKeyListener() {

			public boolean onKey(View arg0, int key, KeyEvent arg2) {
				if ( key == KeyEvent.KEYCODE_ENTER ) {
					load();
					return true;
				}

				return false;
			}
        	
        });
        
        // load page when we click go
        go.setOnClickListener(new OnClickListener() {

			public void onClick(View v) {
				load();
			}
        	
        });
        
        // 改变颜色
        colorBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

			public void onProgressChanged(SeekBar seekBar, int progress,
					boolean fromTouch) {
				float p100 = progress / 100.0f;
				webView.loadUrl(String.format(
						"javascript:{document.body.style.backgroundColor='#%06x'}",
						Color.HSVToColor(new float[] {360 * p100, p100, 1 - p100 }) & OPAQUE));
			}

			public void onStartTrackingTouch(SeekBar seekBar) {
				// TODO Auto-generated method stub
				
			}

			public void onStopTrackingTouch(SeekBar seekBar) {
				// TODO Auto-generated method stub
				
			}
        	
        });

        load();
		
    }
    
	private void load() {
		webView.loadUrl(url.getText().toString());
		webView.requestFocus();
	}

	/* (non-Javadoc)
	 * @see android.app.Activity#onKeyDown(int, android.view.KeyEvent)
	 */
	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {
	    if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
	        webView.goBack();
	        return true;
	    }

		return super.onKeyDown(keyCode, event);
	}
	
}

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="vertical" android:layout_width="fill_parent"
	android:layout_height="fill_parent">


	<LinearLayout
		android:orientation="horizontal" android:layout_height="wrap_content" android:layout_width="fill_parent">
			<EditText android:layout_height="wrap_content" android:id="@+id/url"
				android:scrollHorizontally="true" android:text="@string/home_url" android:layout_width="wrap_content" android:singleLine="true" android:layout_weight="1"></EditText>
			<Button android:layout_height="wrap_content" android:text="@string/go"
				android:layout_toRightOf="@id/url" android:id="@+id/go" android:layout_width="wrap_content"></Button>
	</LinearLayout>
	
	<RelativeLayout android:layout_width="fill_parent" android:layout_height="fill_parent">
		<WebView android:id="@+id/webview" android:layout_width="fill_parent" android:layout_weight="1" android:layout_height="fill_parent"></WebView>


		<SeekBar android:layout_height="wrap_content" android:layout_width="fill_parent" android:layout_above="@id/webview" android:layout_alignBottom="@id/webview" android:layout_alignParentBottom="true" android:layout_margin="12dip" android:id="@+id/colorbar"></SeekBar>
	</RelativeLayout>
</LinearLayout>

 这里注意和http://wang-peng1.iteye.com/admin/blogs/631899

当中浏览器的区别

本实例的浏览器是使用新的浏览器不用原来的 给的链接是一直使用一个