相关疑难解决方法(0)

我使用了Google和本教程中的指南来制作我自己的上下文操作栏.

private ActionMode.Callback mActionModeCallback = new ActionMode.Callback() {

    // Called when the action mode is created; startActionMode() was called
    @Override
    public boolean onCreateActionMode(ActionMode mode, Menu menu) {
        // Inflate a menu resource providing context menu items
        MenuInflater inflater = mode.getMenuInflater();
        inflater.inflate(R.menu.annotation_menu, menu);
        return true;
    }

    // Called each time the action mode is shown.
    // Always called after onCreateActionMode, but
    // may be called multiple times if the mode is invalidated.
    @Override
    public boolean onPrepareActionMode(ActionMode mode, …

我希望允许用户从webview中选择一些文本,它需要作为文本消息发送.请找到选择文本并复制到剪贴板并从剪贴板中提取的方法.我看到很多例子,但没有任何帮助我真的...... TIA

使用@ orangmoney52链接中提供的代码进行编辑.以下更改

getmethod的第二个参数和invoke方法的第二个参数.如果我给null那里会有警告......哪一个是正确的？

 public void selectAndCopyText() {
     try {
         Method m = WebView.class.getMethod("emulateShiftHeld", Boolean.TYPE); 
            m.invoke(BookView.mWebView, false); 
        } catch (Exception e) {
            e.printStackTrace();
            // fallback
            KeyEvent shiftPressEvent = new KeyEvent(0,0,
                 KeyEvent.ACTION_DOWN,KeyEvent.KEYCODE_SHIFT_LEFT,0,0);
            shiftPressEvent.dispatch(this);
        }

}

得到此错误:

 05-26 16:41:01.121: WARN/System.err(1096): java.lang.NoSuchMethodException: emulateShiftHeld