Android文本框清除图标的处理

/**
     * 输入框清除图标的处理
     * @param text
     * @param icon
     */
    public static void inputClear(final EditText text, final ImageView icon){
        
        text.setOnFocusChangeListener(new OnFocusChangeListener(){

            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                String str = text.getText().toString();
                icon.setVisibility(hasFocus && str.length() > 0 ? View.VISIBLE : View.GONE);
            }
        });
        
        text.addTextChangedListener(new TextWatcher(){

            @Override
            public void afterTextChanged(Editable s) {
                String str = text.getText().toString();
                icon.setVisibility(str.length() > 0 ? View.VISIBLE : View.GONE);
            }

            @Override
            public void beforeTextChanged(CharSequence s, int start, int count,
                    int after) {
                
            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before,
                    int count) {
                
            }
        });
        
        icon.setOnClickListener(new OnClickListener(){

            @Override
            public void onClick(View v) {
                text.setText("");
            }
        });
    }