輸入修改姓名時候，只能輸入漢字，字母，數字，並且最長只能輸入16個字元，數字字母算一個字元，漢字算兩個字元

重寫EditText對單次輸入的內容進行攔截判斷

public class LimitEditText extends EditText  {

    public LimitEditText(Context context) {
        super(context);
    }

    public LimitEditText(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public LimitEditText(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
//        this.addTextChangedListener(this);
    }

    /**
     * 輸入法
     * @param outAttrs
     * @return
     */
    @Override
    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
        return new mInputConnecttion(super.onCreateInputConnection(outAttrs),
                false);
    }







    private int count;
    class mInputConnecttion extends InputConnectionWrapper implements
            InputConnection {

        public mInputConnecttion(InputConnection target, boolean mutable) {
            super(target, mutable);
        }


        /**
         * 對輸入的內容進行攔截
         *
         * @param text
         * @param newCursorPosition
         * @return
         */
        @Override
        public boolean commitText(CharSequence text, int newCursorPosition) {
            // 只能輸入漢字

            if (!text.toString().matches("[\u4e00-\u9fa5]+") && !text.toString().matches("[a-zA-Z]+")&&!text.toString().matches("[0-9]")) {
                ToastUtil.ToastShow(getContext(),"只能輸入數字和字母和漢字");
                return false;
            }


           tips(text.toString());

           if(count>16){
               ToastUtil.ToastShow(getContext(),"最多16個字元");
               return  false;
           }

            return super.commitText(text, newCursorPosition);
        }

        private void tips (String append){
            count=0;

            String text=getText().toString();
            for (int i=0;i<text.length();i++){
                String a=String.valueOf(text.charAt(i));
                if(a.matches("[\u4e00-\u9fa5]+")){
                    count=count+2;
                }
                else{
                    count=count+1;
                }
            }



            for (int i=0;i<append.length();i++){
                String a=String.valueOf(append.charAt(i));
                if(a.matches("[\u4e00-\u9fa5]+")){
                    count=count+2;
                }
                else{
                    count=count+1;
                }
            }


        }


        @Override
        public boolean sendKeyEvent(KeyEvent event) {
            return super.sendKeyEvent(event);
        }

        @Override
        public boolean setSelection(int start, int end) {

            return super.setSelection(start, end);
        }

    }


}
 

提交時候正則判斷，只能有數字字母漢字

    public boolean intputName(String name) {
        Pattern compile = Pattern.compile("[a-zA-Z0-9\u4e00-\u9fa5]*");
        Matcher matcher = compile.matcher(name);
        if (matcher.matches()) {
            return true;
        } else {
            return false;
        }
    }
 

奇葩需求天天有