LicensePlateKeyboard.zip

package com.azhon.keyboard; import android.content.Context; import android.graphics.Color; import android.graphics.Rect; import android.text.TextUtils; import android.util.AttributeSet; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.LinearLayout; import android.widget.TextView; import androidx.annotation.NonNull; import androidx.annotation.Nullable; import androidx.recyclerview.widget.GridLayoutManager; import androidx.recyclerview.widget.RecyclerView; import java.util.ArrayList; import java.util.Collections; import java.util.List; /** * 项目名: LicensePlateKeyboard * 包名 com.azhon.keyboard * 文件名: LicensePlateView * 创建时间: 2019-08-30 on 22:51 * 描述: TODO 车牌号输入键盘 * * @author 阿钟 */ public class LicensePlateView extends LinearLayout implements View.OnClickListener { /** * 车牌简称 */ private List<String> provinceList = new ArrayList<>(); /** * 0~9,A~Z(车牌里没有I、O字母) */ private List<String> numList = new ArrayList<>(); /** * 键盘的背景颜色 */ private final int backgroundColor = Color.parseColor("#e9e9e9"); /** * 键盘文字颜色 */ private final int keyTextColor = Color.parseColor("#333333"); /** * 键盘列数 */ private final int spanCount = 10; /** * 键盘 键的间隔 */ private final int keyButtonMargin = 15; /** * 键盘上下左右的边距 */ private final int keyboardPadding = 10; /** * 按键点击回调 */ private OnKeyClickListener onKeyClickListener; private KeyAdapter keyAdapter; public LicensePlateView(Context context) { super(context); init(context); } public LicensePlateView(Context context, @Nullable AttributeSet attrs) { super(context, attrs); init(context); } private void init(Context context) { setOrientation(LinearLayout.VERTICAL); setBackgroundColor(backgroundColor); initKeys(); RecyclerView recyclerView = new RecyclerView(context); recyclerView.setOverScrollMode(OVER_SCROLL_NEVER); recyclerView.setLayoutManager(new GridLayoutManager(context, spanCount)); recyclerView.addItemDecoration(new RecycleGridDivider(keyButtonMargin)); int padding = dip2px(context, keyboardPadding); recyclerView.setPadding(padding, padding, padding, padding); addView(recyclerView); keyAdapter = new KeyAdapter(this); recyclerView.setAdapter(keyAdapter); keyAdapter.setNewData(provinceList); } /** * 初始化按键 */ private void initKeys() { String[] province = getResources().getStringArray(R.array.province); String[] num = getResources().getStringArray(R.array.nums); Collections.addAll(provinceList, province); Collections.addAll(numList, num); } /** * 按键点击事件 */ @Override public void onClick(View v) { TextView tvKey = v.findViewById(R.id.tv_key); String key = tvKey.getText().toString(); if (key.equals("ABC\n123")) { //键盘切换 keyAdapter.setNewData(numList); return; } else if (key.equals("省")) { keyAdapter.setNewData(provinceList); return; } if (onKeyClickListener != null) { onKeyClickListener.onKeyClick(key); } } private class KeyAdapter extends RecyclerView.Adapter<KeyAdapter.KeyViewHolder> { private List<String> list = new ArrayList<>(); private OnClickListener listener; public KeyAdapter(OnClickListener listener) { this.listener = listener; } @NonNull @Override public KeyAdapter.KeyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) { View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_key, parent, false); return new KeyViewHolder(view); } @Override public void onBindViewHolder(@NonNull KeyAdapter.KeyViewHolder holder, int position) { String key = list.get(position); holder.tvKey.setText(key); holder.itemView.setOnClickListener(listener); if (TextUtils.isEmpty(key)) { holder.itemView.setBackgroundResource(0); //键盘类型切换按键 } else if (key.equals("ABC\n123") || key.equals("省")) { holder.tvKey.setTextSize(10); holder.itemView.setBackgroundResource(R.drawable.sel_blue_radius_2); holder.tvKey.setTextColor(Color.WHITE); } else { holder.tvKey.setTextSize(12); holder.itemView.setBackgroundResource(R.drawable.sel_white_radius_2); holder.tvKey.setTextColor(keyTextColor); } } @Override public int getItemCount() { return list.size(); } public void setNewData(List<String> list) { this.list.clear(); this.list.addAll(list); notifyDataSetChanged(); } private class KeyViewHolder extends RecyclerView.ViewHolder { private TextView tvKey; public KeyViewHolder(@NonNull View itemView) { super(itemView); tvKey = itemView.findViewById(R.id.tv_key); } } } public class RecycleGridDivider extends RecyclerView.ItemDecoration { /** * 分割线宽度 */ private int space; public RecycleGridDivider(int space) { this.space = space; } @Override public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) { GridLayoutManager manager = (GridLayoutManager) parent.getLayoutManager(); int span = manager.getSpanCount(); //为了Item大小均匀，将设定分割线平均分给左右两边Item各一半 int offset = space / 2; //得到View的位置 int childPosition = parent.getChildAdapterPosition(view); //第一排，顶部不画 if (childPosition < span) { //最左边的，左边不画 if (childPosition % span == 0) { outRect.set(0, 0, offset, 0); //最右边，右边不画 } else if (childPosition % span == span - 1) { outRect.set(offset, 0, 0, 0); } else { outRect.set(offset, 0, offset, 0); } } else { //上下的分割线，就从第二排开始，每个区域的顶部直接添加设定大小，不用再均分了 if (childPosition % span == 0) { outRect.set(0, space, offset, 0); } else if (childPosition % span == span - 1) { outRect.set(offset, space, 0, 0); } else { outRect.set(offset, space, offset, 0); } } } } /** * 设置按键点击事件 */ public void setOnKeyClickListener(OnKeyClickListener listener) { this.onKeyClickListener = listener; } public interface OnKeyClickListener { void onKeyClick(String key); } /** * 根据手机的分辨率从 dp 的单位 转成为 px(像素) */ public static int dip2px(Context context, float dpValue) { final float scale = context.getResources().getDisplayMetrics().density; return (int) (dpValue * scale + 0.5f); } }