最近在做物流的项目,需要输入车牌号,传统的输入体验并不好,来回切换还要手打,便有了自定义键盘的想法。
其实这个车牌需求并不多见,物流、租车、停车相关的会常见一些,好在有前辈已经铺好路了
这个比较详细:https://blog.csdn.net/dgs960825/article/details/50344743
1.在res文件夹下新建xml文件夹,新建两个文件:number_or_letters.xml(数字和大写字母)、province_abbreviation.xml(省会、直辖市、特别行政区简称)。
number_or_letters.xml
<?xml version="1.0" encoding="UTF-8"?> <Keyboard android:keyWidth="10%p" android:keyHeight="8%" android:horizontalGap="0.0px" android:verticalGap="0.0px" xmlns:android="http://schemas.android.com/apk/res/android"> <Row android:verticalGap="1%p"> <Key android:codes="49" android:keyLabel="1" android:horizontalGap="1%p" android:keyWidth="8%p" android:keyEdgeFlags="left" /> <Key android:codes="50" android:keyLabel="2" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="51" android:keyLabel="3" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="52" android:keyLabel="4" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="53" android:keyLabel="5" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="54" android:keyLabel="6" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="55" android:keyLabel="7" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="56" android:keyLabel="8" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="57" android:keyLabel="9" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="48" android:keyLabel="0" android:horizontalGap="2%p" android:keyWidth="8%p" android:keyEdgeFlags="right"/> </Row> <Row android:verticalGap="1%p"> <Key android:codes="81" android:keyLabel="Q" android:horizontalGap="1%p" android:keyWidth="8%p" android:keyEdgeFlags="left" /> <Key android:codes="87" android:keyLabel="W" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="69" android:keyLabel="E" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="82" android:keyLabel="R" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="84" android:keyLabel="T" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="89" android:keyLabel="Y" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="85" android:keyLabel="U" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="73" android:keyLabel="I" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="79" android:keyLabel="O" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="80" android:keyLabel="P" android:horizontalGap="2%p" android:keyWidth="8%p" android:keyEdgeFlags="right" /> </Row> <Row android:verticalGap="1%p"> <Key android:codes="65" android:keyLabel="A" android:horizontalGap="6%p" android:keyWidth="8%p" android:keyEdgeFlags="left"/> <Key android:codes="83" android:keyLabel="S" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="68" android:keyLabel="D" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="70" android:keyLabel="F" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="71" android:keyLabel="G" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="72" android:keyLabel="H" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="74" android:keyLabel="J" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="75" android:keyLabel="K" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="76" android:keyLabel="L" android:horizontalGap="2%p" android:keyWidth="8%p" android:keyEdgeFlags="right" /> </Row> <Row > <Key android:codes="-1" android:keyEdgeFlags="left" android:keyLabel="省份" android:horizontalGap="1%p" android:keyWidth="13%p" android:isModifier="true" android:isSticky="true" /> <Key android:codes="90" android:keyLabel="Z" android:horizontalGap="2%p" android:keyWidth="8%p"/> <Key android:codes="88" android:keyLabel="X" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="67" android:keyLabel="C" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="86" android:keyLabel="V" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="66" android:keyLabel="B" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="78" android:keyLabel="N" android:horizontalGap="2%p" android:keyWidth="8%p"/> <Key android:codes="77" android:keyLabel="M" android:horizontalGap="2%p" android:keyWidth="8%p"/> <Key android:codes="-3" android:keyEdgeFlags="right" android:keyLabel="删除" android:horizontalGap="2%p" android:keyWidth="13%p" android:isRepeatable="false" /> </Row> </Keyboard>
province_abbreviation.xml
<?xml version="1.0" encoding="UTF-8"?> <Keyboard android:keyWidth="10%p" android:keyHeight="8%p" android:horizontalGap="0.0px" android:verticalGap="0.0px" xmlns:android="http://schemas.android.com/apk/res/android"> <Row android:verticalGap="1%p"> <Key android:codes="20140" android:keyLabel="京" android:horizontalGap="1%p" android:keyWidth="8%p" android:keyEdgeFlags="left" /> <Key android:codes="27941" android:keyLabel="津" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="20864" android:keyLabel="冀" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="40065" android:keyLabel="鲁" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="26187" android:keyLabel="晋" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="33945" android:keyLabel="蒙" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="36797" android:keyLabel="辽" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="21513" android:keyLabel="吉" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="40657" android:keyLabel="黑" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="27818" android:keyLabel="沪" android:horizontalGap="2%p" android:keyWidth="8%p" android:keyEdgeFlags="right"/> </Row> <Row android:verticalGap="1%p"> <Key android:codes="33487" android:keyLabel="苏" android:horizontalGap="1%p" android:keyWidth="8%p" android:keyEdgeFlags="left" /> <Key android:codes="27993" android:keyLabel="浙" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="30358" android:keyLabel="皖" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="38397" android:keyLabel="闽" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="36195" android:keyLabel="赣" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="35947" android:keyLabel="豫" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="37122" android:keyLabel="鄂" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="28248" android:keyLabel="湘" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="31908" android:keyLabel="粤" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="26690" android:keyLabel="桂" android:horizontalGap="2%p" android:keyWidth="8%p" android:keyEdgeFlags="right" /> </Row> <Row android:verticalGap="1%p"> <Key android:codes="28189" android:keyLabel="渝" android:horizontalGap="11%p" android:keyWidth="8%p" android:keyEdgeFlags="left"/> <Key android:codes="24029" android:keyLabel="川" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="36149" android:keyLabel="贵" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="20113" android:keyLabel="云" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="34255" android:keyLabel="藏" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="38485" android:keyLabel="陕" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="29976" android:keyLabel="甘" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="38738" android:keyLabel="青" android:horizontalGap="2%p" android:keyWidth="8%p" android:keyEdgeFlags="right" /> </Row> <Row > <Key android:codes="-1" android:keyEdgeFlags="left" android:keyLabel="ABC" android:horizontalGap="4%p" android:keyWidth="15%p" android:isModifier="true" android:isSticky="true" /> <Key android:codes="29756" android:keyLabel="琼" android:horizontalGap="2%p" android:keyWidth="8%p"/> <Key android:codes="26032" android:keyLabel="新" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="23425" android:keyLabel="宁" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="28207" android:keyLabel="港" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="28595" android:keyLabel="澳" android:horizontalGap="2%p" android:keyWidth="8%p" /> <Key android:codes="21488" android:keyLabel="台" android:horizontalGap="2%p" android:keyWidth="8%p"/> <Key android:codes="-3" android:keyEdgeFlags="right" android:keyLabel="删除" android:horizontalGap="2%p" android:keyWidth="15%p" android:isRepeatable="false" /> </Row> </Keyboard>
2.新建键盘工具类KeyboardUtil(初始化、交互、显示和隐藏)
package yechaoa.com.platenumberkeyboard;
import android.app.Activity; import android.content.Context; import android.inputmethodservice.Keyboard; import android.inputmethodservice.KeyboardView; import android.text.Editable; import android.text.InputType; import android.view.View; import android.view.WindowManager; import android.widget.EditText; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; /** * Created by yechao on 2018/5/15/015. * Describe : */ public class KeyboardUtil { private Activity mActivity; private KeyboardView mKeyboardView; private EditText mEdit; /** * 省份简称键盘 */ private Keyboard provinceKeyboard; /** * 数字与大写字母键盘 */ private Keyboard numberKeyboard; KeyboardUtil(Activity activity, EditText edit) { mActivity = activity; mEdit = edit; provinceKeyboard = new Keyboard(activity, R.xml.province_abbreviation); numberKeyboard = new Keyboard(activity, R.xml.number_or_letters); mKeyboardView = (KeyboardView) activity.findViewById(R.id.keyboard_view); mKeyboardView.setKeyboard(provinceKeyboard); mKeyboardView.setEnabled(true); mKeyboardView.setPreviewEnabled(false); mKeyboardView.setOnKeyboardActionListener(listener); } private KeyboardView.OnKeyboardActionListener listener = new KeyboardView.OnKeyboardActionListener() { @Override public void swipeUp() { } @Override public void swipeRight() { } @Override public void swipeLeft() { } @Override public void swipeDown() { } @Override public void onText(CharSequence text) { } @Override public void onRelease(int primaryCode) { } @Override public void onPress(int primaryCode) { } @Override public void onKey(int primaryCode, int[] keyCodes) { Editable editable = mEdit.getText(); int start = mEdit.getSelectionStart(); //判定是否是中文的正则表达式 [\\u4e00-\\u9fa5]判断一个中文 [\\u4e00-\\u9fa5]+多个中文 String reg = "[\\u4e00-\\u9fa5]"; if (primaryCode == -1) {// 省份简称与数字键盘切换 if (mEdit.getText().toString().matches(reg)) { changeKeyboard(true); } } else if (primaryCode == -3) { if (editable != null && editable.length() > 0) { //没有输入内容时软键盘重置为省份简称软键盘 if (editable.length() == 1) { changeKeyboard(false); } if (start > 0) { editable.delete(start - 1, start); } } } else { editable.insert(start, Character.toString((char) primaryCode)); // 判断第一个字符是否是中文,是,则自动切换到数字软键盘 if (mEdit.getText().toString().matches(reg)) { changeKeyboard(true); } } } }; /** * 指定切换软键盘 isNumber false表示要切换为省份简称软键盘 true表示要切换为数字软键盘 */ private void changeKeyboard(boolean isNumber) { if (isNumber) { mKeyboardView.setKeyboard(numberKeyboard); } else { mKeyboardView.setKeyboard(provinceKeyboard); } } /** * 软键盘展示状态 */ public boolean isShow() { return mKeyboardView.getVisibility() == View.VISIBLE; } /** * 软键盘展示 */ public void showKeyboard() { int visibility = mKeyboardView.getVisibility(); if (visibility == View.GONE || visibility == View.INVISIBLE) { mKeyboardView.setVisibility(View.VISIBLE); } } /** * 软键盘隐藏 */ public void hideKeyboard() { int visibility = mKeyboardView.getVisibility(); if (visibility == View.VISIBLE) { mKeyboardView.setVisibility(View.INVISIBLE); } } /** * 禁掉系统软键盘 */ public void hideSoftInputMethod() { mActivity.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN); int currentVersion = android.os.Build.VERSION.SDK_INT; String methodName = null; if (currentVersion >= 16) { // 4.2 methodName = "setShowSoftInputOnFocus"; } else if (currentVersion >= 14) { // 4.0 methodName = "setSoftInputShownOnFocus"; } if (methodName == null) { mEdit.setInputType(InputType.TYPE_NULL); } else { Class<EditText> cls = EditText.class; Method setShowSoftInputOnFocus; try { setShowSoftInputOnFocus = cls.getMethod(methodName, boolean.class); setShowSoftInputOnFocus.setAccessible(true); setShowSoftInputOnFocus.invoke(mEdit, false); } catch (NoSuchMethodException e) { mEdit.setInputType(InputType.TYPE_NULL); e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } } } }
3.Activity引用
package yechaoa.com.platenumberkeyboard;
import android.annotation.SuppressLint; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.text.Editable; import android.text.TextWatcher; import android.util.Log; import android.view.KeyEvent; import android.view.MotionEvent; import android.view.View; import android.widget.EditText; public class MainActivity extends AppCompatActivity { private KeyboardUtil keyboardUtil; private EditText mEditText; @SuppressLint("ClickableViewAccessibility") @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mEditText = findViewById(R.id.edit_text); mEditText.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View view, MotionEvent event) { if (keyboardUtil == null) { keyboardUtil = new KeyboardUtil(MainActivity.this, mEditText); keyboardUtil.hideSoftInputMethod(); keyboardUtil.showKeyboard(); } else { keyboardUtil.showKeyboard(); } return false; } }); mEditText.addTextChangedListener(new TextWatcher() { @Override public void afterTextChanged(Editable s) { Log.i("字符变换后", "afterTextChanged"); } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { Log.i("字符变换前", s + "-" + start + "-" + count + "-" + after); } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { Log.i("字符变换中", s + "-" + "-" + start + "-" + before + "-" + count); } }); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { if (keyboardUtil.isShow()) { keyboardUtil.hideKeyboard(); } else { finish(); } } return false; } }
4.相关属性
android:keyBackground=”@drawable/selector_key”
* 按键的背景颜色
android:shadowColor=”#FFFFFF”
android:shadowRadius=”0.0”
* 不加这两个属性 文字会出现模糊
android:keyTextColor=”#000”
* 字体颜色
android:keyTextSize=”18sp”
* 字体大小
android:keyIcon=”@drawable/ic_delete”
* 按键上的图标
android:codes=”20140”
* 输出的内容 对照ASCII表
android:keyLabel=”京”
* 按键上显示的内容
android:horizontalGap=”0px”
* 水平方向的间隙
android:verticalGap=”0px”
* 垂直反向的间隙
android:keyEdgeFlags=”right”
* 按键的对齐方式