preface
Recently, the project is docking meituan take-out function to realize the delivery code of the outside brother to pick up goods
After docking function, user feedback pops up the soft keyboard is difficult to input the number is too small
It looks something like this
demand
The team leader said maybe we should get a custom soft keyboard with a bigger number for the delivery guy
I set the EditText input format to Number and it still doesn’t work
Let’s do it
Let’s take a look at the implementation first
Achieve effect GIF
The implementation code
Custom View NineNumericKeyboardView
/**
* Author by Lyu
* Date on 2021/5/26-19:55
* Description:九宫格数字软键盘
*/
public class NineNumericKeyboardView extends View {
/**
* 列
*/
private static final int TOTAL_COL = 3;
/**
* 行
*/
private static final int TOTAL_ROW = 4;
private Paint HuiseBgPaint, linePaint;
private Paint mTextPaint;
private int mViewWidth; // 键盘宽度
private int mViewHight; // 键盘高度
private float mCellWidth, mCellHight; // 单元格宽度、高度
private Row rows[] = new Row[TOTAL_ROW];
private Bitmap bitmap; // 删除按钮图片
private Paint mCutTextPaint;
//回调方法
public interface CallBack {
void clickNum(String num);// 回调点击的数字
void deleteNum();// 回调删除
}
private CallBack mCallBack;// 回调
public void setOnCallBack(CallBack callBack) {
mCallBack = callBack;
}
public NineNumericKeyboardView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context);
}
public NineNumericKeyboardView(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
public NineNumericKeyboardView(Context context) {
super(context);
init(context);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
drawLine(canvas);
for (int i = 0; i < TOTAL_ROW; i++) {
if (rows[i] != null)
rows[i].drawCells(canvas);
}
}
/**
* 画6条直线
*
* @param canvas
*/
private void drawLine(Canvas canvas) {
canvas.drawLine(0, 0, mViewWidth, 0, linePaint);
canvas.drawLine(0, mCellHight, mViewWidth, mCellHight, linePaint);
canvas.drawLine(0, mCellHight * 2, mViewWidth, mCellHight * 2, linePaint);
canvas.drawLine(0, mCellHight * 3, mViewWidth, mCellHight * 3, linePaint);
canvas.drawLine(mCellWidth, 0, mCellWidth, mViewHight, linePaint);
canvas.drawLine(mCellWidth * 2, 0, mCellWidth * 2, mViewHight, linePaint);
}
/**
* 初始化画笔
*
* @param context
*/
private void init(Context context) {
mTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mCutTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
linePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
linePaint.setTextSize(1.0f);
linePaint.setColor(0x90000000);
HuiseBgPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
HuiseBgPaint.setStyle(Paint.Style.FILL);
HuiseBgPaint.setColor(Color.parseColor("#e9e9e9"));
initDate();
}
private void initDate() {
fillDate();
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
mViewWidth = w;
mViewHight = h;
mCellWidth = mViewWidth / TOTAL_COL;
mCellHight = mViewHight / TOTAL_ROW;
mTextPaint.setTextSize(mCellHight / 3);
}
private Cell mClickCell = null;
private float mDownX;
private float mDownY;
/*
*
* 触摸事件为了确定点击位置的数字
*/
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mDownX = event.getX();
mDownY = event.getY();
int col = (int) (mDownX / mCellWidth);
int row = (int) (mDownY / mCellHight);
measureClickCell(col, row);
break;
case MotionEvent.ACTION_UP:
if (mClickCell != null) {
// 在抬起后把状态置为默认
rows[mClickCell.i].cells[mClickCell.j].state = State.DEFAULT_NUM;
mClickCell = null;
invalidate();
}
break;
}
return true;
}
/**
* 测量点击单元格
*
* @param col 列
* @param row 行
*/
private void measureClickCell(int col, int row) {
if (col >= TOTAL_COL || row >= TOTAL_ROW)
return;
if (rows[row] != null) {
mClickCell = new Cell(rows[row].cells[col].num, rows[row].cells[col].state, rows[row].cells[col].i,
rows[row].cells[col].j);
rows[row].cells[col].state = State.CLICK_NUM;
if ("-5".equals(rows[row].cells[col].num)) {
mCallBack.deleteNum();
} else {
mCallBack.clickNum(rows[row].cells[col].num);
}
invalidate();
}
}
/**
* 组 以一行为一组
*/
private class Row {
public int j;
Row(int j) {
this.j = j;
}
// 一行3个单元格
public Cell[] cells = new Cell[TOTAL_COL];
public void drawCells(Canvas canvas) {
for (int i = 0; i < cells.length; i++) {
if (cells[i] != null)
cells[i].drawSelf(canvas);
}
}
}
// 单元格
private class Cell {
public String num;
public State state;
/**
* i = 行 j = 列
*/
public int i;
public int j;
public Cell(String num, State state, int i, int j) {
super();
this.num = num;
this.state = state;
this.i = i;
this.j = j;
}
// 绘制一个单元格 如果颜色需要自定义可以修改
public void drawSelf(Canvas canvas) {
switch (state) {
case CLICK_NUM:
// 绘制点击效果灰色背景
canvas.drawRect((mCellWidth * j), (mCellHight * i),
(mCellWidth * (j + 1)), (mCellHight * (i + 1)), HuiseBgPaint);
break;
}
if ("-5".equals(num)) {
// 绘制删除图片
canvas.drawBitmap(bitmap, (float) (mCellWidth * 2.5 - bitmap.getWidth() / 2), (float) (mCellHight * 3.5 - bitmap.getHeight() / 2), HuiseBgPaint);
} else {
// 绘制数字
canvas.drawText(num, (float) ((j + 0.5) * mCellWidth - mTextPaint.measureText(num) / 2),
(float) ((i + 0.5) * mCellHight + mTextPaint.measureText(num, 0, 1) / 2),
mTextPaint);
}
}
}
/**
* cell的state
*/
private enum State {
DEFAULT_NUM, CLICK_NUM;
}
private List<String> numKeys = Arrays.asList("1", "2", "3", "4", "5", "6", "7", "8", "9", "0");
/**
* 填充数字
*/
private void fillDate() {
int postion = 0;
for (int i = 0; i < TOTAL_ROW; i++) {
rows[i] = new Row(i);
for (int j = 0; j < TOTAL_COL; j++) {
if (i == 3 && j == 0) {
rows[i].cells[j] = new Cell(".", State.DEFAULT_NUM, i, j);
continue;
} else if (i == 3 && j == 2) {
rows[i].cells[j] = new Cell("-5", State.DEFAULT_NUM, i, j);
continue;
} else {
rows[i].cells[j] = new Cell(numKeys.get(postion), State.DEFAULT_NUM, i, j);
postion++;
}
}
}
//这里是插入一张删除数字的图 一般是 X
bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.keyboard_delete);
}
}
Copy the codeMethod of use
Use the android component PopupWindow at the bottom of the specified page to complete the effect
In the specified View page
/ / initialize the keyboard private void initKeyboardView () {/ / set no pop-up keyboard etInputPickupCode system. SetInputType (InputType. TYPE_NULL); Click on the event / / their surveillance EditText. We customize keyboard etInputPickupCode setOnClickListener (view - > mPop) showAtLocation (llKey, Gravity. BOTTOM, 0, 0)); mPop = new PopupWindow(); mPopView = LayoutInflater.from(getApplicationContext()).inflate(R.layout.custom_keyboardview, null); mPop.setContentView(mPopView); mPop.setTouchable(true); mPop.setFocusable(true); mPop.setBackgroundDrawable(new ColorDrawable()); mPop.setWidth(ViewGroup.LayoutParams.MATCH_PARENT); mPop.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); mCustomKeyView = mPopView.findViewById(R.id.key_view); / / set the callback, and text insertion and deletion mCustomKeyView. SetOnCallBack (this); } @Override public void clickNum(String num) { if (etInputPickupCode.getText().length() < 8) { etInputPickupCode.append(num); } } @Override public void deleteNum() { int last = etInputPickupCode.getText().length(); If (last > 0) {/ / remove the last etInputPickupCode getText (), delete (last - 1, the last); }}Copy the code‘
2021 continue to come on