Android自定义输入法软键盘

import android.inputmethodservice.InputMethodService;
import android.inputmethodservice.Keyboard;
import android.inputmethodservice.KeyboardView;
import android.media.AudioManager;
import android.view.KeyEvent;
import android.view.View;
import android.view.inputmethod.InputConnection;

/**
 * @description: 自定义输入法
 * @version: v1.0
 * @author: yeyl
 * @date: 2018/6/26 14:57
 * @history:
 */
public class SimpleIME extends InputMethodService
 implements KeyboardView.OnKeyboardActionListener {

 private KeyboardView mKeyboardView;
 private Keyboard mKeyboard;
 /**
 * 大小写转换的flag
 */
 private boolean mCaps = false;

 @Override
 public View onCreateInputView() {
 mKeyboardView = (KeyboardView) getLayoutInflater().inflate(R.layout.layout_keyboard, null);
 mKeyboard = new Keyboard(this, R.xml.keyboard_number);
 mKeyboardView.setKeyboard(mKeyboard);
 mKeyboardView.setOnKeyboardActionListener(this);
 return mKeyboardView;
 }

 @Override
 public boolean onKeyDown(int keyCode, KeyEvent event) {
 return super.onKeyDown(keyCode, event);
 }

 @Override
 public void onKey(int primaryCode, int[] keyCodes) {
 InputConnection ic = getCurrentInputConnection();
 playClick(primaryCode);
 switch (primaryCode) {
  case Keyboard.KEYCODE_DELETE:
  // 回退
  ic.deleteSurroundingText(1, 0);
  break;
  case Keyboard.KEYCODE_SHIFT:
  // 大小写切换
  mCaps = !mCaps;
  mKeyboard.setShifted(mCaps);
  mKeyboardView.invalidateAllKeys();
  break;
  case Keyboard.KEYCODE_DONE:
  // 完成
  ic.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER));
  break;
  case Keyboard.KEYCODE_CANCEL:
  // 取消
  ic.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_BACK));
  ic.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_BACK));
  break;
  default:
  char code = (char) primaryCode;
  if (Character.isLetter(code) && mCaps) {
   code = Character.toUpperCase(code);
  }
  ic.commitText(String.valueOf(code), 1);
 }
 }

 /**
 * 播放按键音
 *
 * @param keyCode 键码
 */
 private void playClick(int keyCode) {
 AudioManager am = (AudioManager) getSystemService(AUDIO_SERVICE);
 switch (keyCode) {
  case 32:
  am.playSoundEffect(AudioManager.FX_KEYPRESS_SPACEBAR);
  break;
  case Keyboard.KEYCODE_DONE:
  case 10:
  am.playSoundEffect(AudioManager.FX_KEYPRESS_RETURN);
  break;
  case Keyboard.KEYCODE_DELETE:
  am.playSoundEffect(AudioManager.FX_KEYPRESS_DELETE);
  break;
  default:
  am.playSoundEffect(AudioManager.FX_KEYPRESS_STANDARD);
 }
 }

 @Override
 public void onPress(int primaryCode) {
 }

 @Override
 public void onRelease(int primaryCode) {
 }

 @Override
 public void onText(CharSequence text) {
 }

 @Override
 public void swipeDown() {
 }

 @Override
 public void swipeLeft() {
 }

 @Override
 public void swipeRight() {
 }

 @Override
 public void swipeUp() {
 }
}

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