鍵盤(pán)和輸入框分開(kāi)來(lái)寫(xiě)，可以根據(jù)需求在各個(gè)地方使用，同時(shí)處理了大量邏輯，方便快速開(kāi)發(fā)。

效果圖：

keyboard.gif

一：布局代碼

• 鍵盤(pán)由0~9的數(shù)字，刪除鍵和完成鍵組成，也可以根據(jù)需求通過(guò)GridView適配器的getItemViewType方法來(lái)定義。點(diǎn)擊鍵的時(shí)候背景有變色的效果。

• 密碼輸入框由六個(gè)EditText組成，每個(gè)輸入框最對(duì)能輸入一個(gè)數(shù)字，監(jiān)聽(tīng)最后一個(gè)輸入框來(lái)完成密碼輸入結(jié)束的監(jiān)聽(tīng)。

二：鍵盤(pán)

• 鍵盤(pán)中的主要邏輯處理，鍵盤(pán)樣式，item的點(diǎn)擊事件

@Override
public int getViewTypeCount() {
    return 2;
}

@Override
public int getItemViewType(int position) {
    return (getItemId(position) == KEY_NINE) ? 2 : 1;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder viewHolder = null;
    if (convertView == null) {
        if (getItemViewType(position) == 1) {
            //數(shù)字鍵
            convertView = LayoutInflater.from(context).inflate(R.layout.item_grid_keyboard, parent, false);
            viewHolder = new ViewHolder(convertView);
        } else {
            //刪除鍵
            convertView = LayoutInflater.from(context).inflate(R.layout.item_grid_keyboard_delete, parent, false);
        }
    }

    if (getItemViewType(position) == 1) {
        viewHolder = (ViewHolder) convertView.getTag();
        viewHolder.tvKey.setText(key[position]);
    }

    return convertView;
}

三：密碼輸入框

• 密碼輸入框要處理的邏輯有刪除、輸入、輸入完成回調(diào)等

/**
 * 輸入密碼，根據(jù)StringBuilder中數(shù)據(jù)的多少進(jìn)行邏輯判斷
 * @param value
 */
public void add(String value) {
    if (mPassword != null && mPassword.length() < 6) {
        mPassword.append(value);//此處先添加到StringBuilder中，再在輸入框中顯示
        if (mPassword.length() == 1) {
            tvFirst.setText(value);
        } else if (mPassword.length() == 2) {
            tvSecond.setText(value);
        }else if (mPassword.length() == 3) {
            tvThird.setText(value);
        }else if (mPassword.length() == 4) {
            tvForth.setText(value);
        }else if (mPassword.length() == 5) {
            tvFifth.setText(value);
        }else if (mPassword.length() == 6) {
            tvSixth.setText(value);
        }
    }
}

/**
 * 刪除密碼，根據(jù)StringBuilder中數(shù)據(jù)的多少進(jìn)行邏輯判斷
 */
public void remove() {
    if (mPassword != null && mPassword.length() > 0) {
        if (mPassword.length() == 1) {
            tvFirst.setText("");
        } else if (mPassword.length() == 2) {
            tvSecond.setText("");
        }else if (mPassword.length() == 3) {
            tvThird.setText("");
        }else if (mPassword.length() == 4) {
            tvForth.setText("");
        }else if (mPassword.length() == 5) {
            tvFifth.setText("");
        }else if (mPassword.length() == 6) {
            tvSixth.setText("");
        }
        mPassword.deleteCharAt(mPassword.length() - 1);
    }
}

• 獲取完整密碼

/**
 * 返回完整密碼
 * @return 
 */
public String getText() {
    return (mPassword == null) ? null : mPassword.toString();
}

四：實(shí)際應(yīng)用

• 布局，也可以把鍵盤(pán)拆分開(kāi)來(lái)，當(dāng)輸入的時(shí)候從窗口下方滑入

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="match_parent"
                android:layout_height="match_parent">

    <com.github.phoenix.widget.PayEditText
        android:id="@+id/PayEditText_pay"
        android:layout_width="match_parent"
        android:layout_marginTop="20dp"
        android:paddingLeft="12dp"
        android:layout_alignParentTop="true"
        android:paddingRight="12dp"
        android:layout_height="48dp"/>

    <com.github.phoenix.widget.Keyboard
        android:id="@+id/KeyboardView_pay"
        android:layout_alignParentBottom="true"
        android:layout_width="match_parent"
        android:layout_height="300dp"/>

</RelativeLayout>

• 代碼中

//鍵
private static final String[] KEY = new String[] {
            "1", "2", "3",
            "4", "5", "6",
            "7", "8", "9",
            "<<", "0", "完成"
    };
//設(shè)置鍵盤(pán)
keyboard.setKeyboardKeys(KEY);
//鍵盤(pán)鍵的點(diǎn)擊事件
keyboard.setOnClickKeyboardListener(new Keyboard.OnClickKeyboardListener() {
    @Override
    public void onKeyClick(int position, String value) {
        if (position < 11 && position != 9) {
            payEditText.add(value);
        } else if (position == 9) {
            payEditText.remove();
        }else if (position == 11) {
            //當(dāng)點(diǎn)擊鍵盤(pán)上的完成按鈕時(shí)，也可以通過(guò)payEditText.getText()獲取密碼，此時(shí)不應(yīng)該注冊(cè)O(shè)nInputFinishedListener接口
            Toast.makeText(getApplication(), "您的密碼是：" + payEditText.getText(), Toast.LENGTH_SHORT).show();
            finish();
        }
    }
});

//當(dāng)密碼輸入完成時(shí)的回調(diào)
payEditText.setOnInputFinishedListener(new PayEditText.OnInputFinishedListener() {
    @Override
    public void onInputFinished(String password) {
        Toast.makeText(getApplication(), "您的密碼是：" + password, Toast.LENGTH_SHORT).show();
  }
});

源碼：https://github.com/GitPhoenix/Keyboard