android重写webview长按时选择文字然后点击搜索按钮的事件，默认是chrome接受点击事件，现在跳转到360搜索页面_html/css_WEB-ITnose

import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Build;
 import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.view.ActionMode;
 import android.view.ActionMode.Callback;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.MotionEvent;
 import android.webkit.JavascriptInterface;
 import android.webkit.WebSettings;
 import android.webkit.WebView;

/**  
* 在webview的界面里面填加 长按界面时出现搜索按钮 点击搜索按钮跳转到搜索页面  
*  
* @author 王训龙 360404113  
*        
  *         2014-8-8 上午11:39:16  */
   @TargetApi(Build.VERSION_CODES.HONEYCOMB) 
   public class FindWebView extends WebView {     
   public Callback callback;     
   private OnScrollChangedListener mOnScrollChangedListener;         
   @SuppressWarnings("deprecation")    
    public FindWebView(Context context, AttributeSet attrs, int defStyle,                        
    boolean privateBrowsing) {         
    super(context, attrs, defStyle, privateBrowsing);         
    init();     }       
    public FindWebView(Context context, AttributeSet attrs, int defStyle) {         
    super(context, attrs, defStyle);         
    init();     
    }       
    public FindWebView(Context context, AttributeSet attrs) {         
    super(context, attrs);         
    init();     
    }       
    public FindWebView(Context context) {         
    super(context);         
    init();     
    }       
    @TargetApi(Build.VERSION_CODES.KITKAT)     
    @SuppressLint("SetJavaScriptEnabled")     
    private void init() {         
    WebSettings setting = getSettings();         
    setting.setJavaScriptEnabled(true);         
    setting.setJavaScriptCanOpenWindowsAutomatically(true);         
    addJavascriptInterface(new SelectedText(), "search");           
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && Constants.DEBUG) {   
    //支持webview调试         
    WebView.setWebContentsDebuggingEnabled(true);         
    }       
    }       
    @Override     
    public ActionMode startActionMode(Callback callback) {         
CustomizedSelectActionModeCallback customizedSelectActionModeCallback = new CustomizedSelectActionModeCallback(   
callback);        
 return super.startActionMode(customizedSelectActionModeCallback);     
 }       
 @Override     
 public boolean onTouchEvent(MotionEvent event) {         
 return super.onTouchEvent(event);     
 }       
 public class CustomizedSelectActionModeCallback implements ActionMode.Callback {         
 private Callback callback;           
 public CustomizedSelectActionModeCallback(Callback callback) {             
 this.callback = callback;         
 }           
 @Override         
 public boolean onCreateActionMode(ActionMode mode, Menu menu) {             
 return callback.onCreateActionMode(mode, menu);         
 }           
 @Override         
 public boolean onPrepareActionMode(ActionMode mode, Menu menu) {             
 return callback.onPrepareActionMode(mode, menu);         
 }           
 @Override         
 public boolean onActionItemClicked(ActionMode mode, MenuItem item) {             
 if (item == null || TextUtils.isEmpty(item.getTitle())) {                 
 return callback.onActionItemClicked(mode, item);             
 }             
 if (!item.getTitle().toString().contains("搜索")                     
 && !item.getTitle().toString().contains("search")) {                 
 return callback.onActionItemClicked(mode, item);             
 }             
 loadUrl("javascript:window.search.show(window.getSelection().toString());");             
 clearFocus();             
 return true;         
 }           
 @Override         
 public void onDestroyActionMode(ActionMode mode) {             
 callback.onDestroyActionMode(mode);         
 }     
 }       
 public class SelectedText {         
 @JavascriptInterface         
 public void show(String data) {             
 // TODO　这里获取选中的文字            
  Intent intent = new Intent(getContext(), SearchActivity.class);             
  intent.putExtra(SearchActivity.TAG_SEARCH, data);             
  getContext().startActivity(intent);         
  }     
  }       
  private int dY;       
  @Override     
  protected void onScrollChanged(int l, int t, int oldl, int oldt) {         
  super.onScrollChanged(l, t, oldl, oldt);           
  int dy = t - oldt;         
  dY += dy;         
  if (mOnScrollChangedListener != null && Math.abs(dY) > 10) {             
  dY = 0;             
  mOnScrollChangedListener.onScroll(l, t, oldl, oldt);         
  }     
  }       
  public interface OnScrollChangedListener {         
  public void onScroll(int l, int t, int oldl, int oldt);     
  }       
  public void setOnScrollChangedListener(OnScrollChangedListener mOnScrollChangedListener) {         
  this.mOnScrollChangedListener = mOnScrollChangedListener;     
  } 
  }