Android开源：NumberKeyboard - 一个高仿闲鱼键自定义数字键盘特效

   <p>仿造android端闲鱼发布选择价格数字键盘，自定义数字键盘</p>    <p>先附上效果再说：</p>    <p><img src="https://simg.open-open.com/show/997f59130af28880accf45d9f8645fd5.gif"></p>    <p>价格输入测试</p>    <p><img src="https://simg.open-open.com/show/19368b49386e57b2dfb1af044fdb732e.png"></p>    <p>image</p>    <p><img src="https://simg.open-open.com/show/8310ceba8a4ff57599eb36d7a885e8a1.png"></p>    <pre>  <code class="language-java">public class MyKeyBoardView extends KeyboardView {      private Context  mContext;      private Keyboard mKeyBoard;        public MyKeyBoardView(Context context, AttributeSet attrs) {          super(context, attrs);          this.mContext = context;      }        public MyKeyBoardView(Context context, AttributeSet attrs, int defStyle) {          super(context, attrs, defStyle);          this.mContext = context;      }        /**       * 重新画一些按键       */      @Override      public void onDraw(Canvas canvas) {          super.onDraw(canvas);          mKeyBoard = this.getKeyboard();          List<Key> keys = null;          if (mKeyBoard != null) {              keys = mKeyBoard.getKeys();          }            if (keys != null) {              for (Key key : keys) {                  // 数字键盘的处理                  if (key.codes[0] == -4) {                      drawKeyBackground(R.drawable.bg_keyboardview_yes, canvas, key);                      drawText(canvas, key);                  }              }          }      }        private void drawKeyBackground(int drawableId, Canvas canvas, Key key) {          Drawable npd = mContext.getResources().getDrawable(                  drawableId);          int[] drawableState = key.getCurrentDrawableState();          if (key.codes[0] != 0) {              npd.setState(drawableState);          }          npd.setBounds(key.x, key.y, key.x + key.width, key.y                  + key.height);          npd.draw(canvas);      }        private void drawText(Canvas canvas, Key key) {          Rect bounds = new Rect();          Paint paint = new Paint();          paint.setTextAlign(Paint.Align.CENTER);              paint.setAntiAlias(true);            paint.setColor(Color.WHITE);          if (key.label != null) {              String label = key.label.toString();                Field field;                if (label.length() > 1 && key.codes.length < 2) {                  int labelTextSize = 0;                  try {                      field = KeyboardView.class.getDeclaredField("mLabelTextSize");                      field.setAccessible(true);                      labelTextSize = (int) field.get(this);                  } catch (NoSuchFieldException e) {                      e.printStackTrace();                  } catch (IllegalAccessException e) {                      e.printStackTrace();                  }                  paint.setTextSize(labelTextSize);                  paint.setTypeface(Typeface.DEFAULT_BOLD);              } else {                  int keyTextSize = 0;                  try {                      field = KeyboardView.class.getDeclaredField("mLabelTextSize");                      field.setAccessible(true);                      keyTextSize = (int) field.get(this);                  } catch (NoSuchFieldException e) {                      e.printStackTrace();                  } catch (IllegalAccessException e) {                      e.printStackTrace();                  }                  paint.setTextSize(keyTextSize);                  paint.setTypeface(Typeface.DEFAULT);              }                paint.getTextBounds(key.label.toString(), 0, key.label.toString()                      .length(), bounds);              canvas.drawText(key.label.toString(), key.x + (key.width / 2),                      (key.y + key.height / 2) + bounds.height() / 2, paint);          } else if (key.icon != null) {              key.icon.setBounds(key.x + (key.width - key.icon.getIntrinsicWidth()) / 2, key.y + (key.height - key.icon.getIntrinsicHeight()) / 2,                      key.x + (key.width - key.icon.getIntrinsicWidth()) / 2 + key.icon.getIntrinsicWidth(), key.y + (key.height - key.icon.getIntrinsicHeight()) / 2 + key.icon.getIntrinsicHeight());              key.icon.draw(canvas);          }        }  }</code></pre>    <p>增加随机数字键盘 增加速记数字键盘，用于输入安全级别高的密码输入</p>    <pre>  <code class="language-java">private void randomKeyboardNumber() {          List<Keyboard.Key> keyList = mKeyboardNumber.getKeys();          // 查找出0-9的数字键          List<Keyboard.Key> newkeyList = new ArrayList<Keyboard.Key>();          for (int i = 0; i < keyList.size(); i++) {              if (keyList.get(i).label != null                      && isNumber(keyList.get(i).label.toString())) {                  newkeyList.add(keyList.get(i));              }          }          // 数组长度          int count = newkeyList.size();          // 结果集          List<KeyModel> resultList = new ArrayList<KeyModel>();          // 用一个LinkedList作为中介          LinkedList<KeyModel> temp = new LinkedList<KeyModel>();          // 初始化temp          for (int i = 0; i < count; i++) {              temp.add(new KeyModel(48 + i, i + ""));          }          // 取数          Random rand = new Random();          for (int i = 0; i < count; i++) {              int num = rand.nextInt(count - i);              resultList.add(new KeyModel(temp.get(num).getCode(),                      temp.get(num).getLable()));              temp.remove(num);          }          for (int i = 0; i < newkeyList.size(); i++) {              newkeyList.get(i).label = resultList.get(i).getLable();              newkeyList.get(i).codes[0] = resultList.get(i)                      .getCode();          }            mKeyboardView.setKeyboard(mKeyboardNumber);      }</code></pre>    <p>最近在调用使用的android系统的api，keyboardview和keyboard</p>    <p><img src="https://simg.open-open.com/show/a3f8bb4961fba599babf1d3ab0def370.gif"></p>    <p>项目主页：<a href="http://www.open-open.com/lib/view/home/1503218485040">http://www.open-open.com/lib/view/home/1503218485040</a></p>