在Android中,要实现输入法输入历史记录,你可以使用InputMethodService和InputMethodManager。以下是实现这个功能的步骤:
public class CustomInputMethodService extends InputMethodService implements KeyboardView.OnKeyboardActionListener {
// ...
}
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:id="@+id/editText_input_history"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:hint="输入历史记录"
android:inputType="text"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<!-- 其他布局组件 -->
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:id="@+id/editText_input_history"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:hint="输入历史记录"
android:inputType="text"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="0dp"
android:layout_height="?attr/actionBarSize"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/editText_input_history" />
<androidx.view.inputmethod.KeyboardView
android:id="@+id/keyboardView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:keyBackground="@drawable/key_background"
android:keyTextColor="@color/key_text_color"
android:keyTextColorHint="@color/key_text_color_hint"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/toolbar"
android:onKeyboardActionListener="com.example.myapplication.CustomInputMethodService@7f0d8a6e" />
<!-- 其他布局组件 -->
</androidx.constraintlayout.widget.ConstraintLayout>
public class CustomInputMethodService extends InputMethodService implements KeyboardView.OnKeyboardActionListener {
private EditText editTextInputHistory;
@Override
public View onCreateInputView() {
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View inputView = inflater.inflate(R.layout.custom_input_method, null);
editTextInputHistory = inputView.findViewById(R.id.editText_input_history);
KeyboardView keyboardView = inputView.findViewById(R.id.keyboardView);
keyboardView.setOnKeyboardActionListener(this);
return inputView;
}
@Override
public void onKey(int primaryCode, KeyEvent event) {
switch (primaryCode) {
case Keyboard.KEYCODE_DELETE:
// 处理删除键事件
break;
case Keyboard.KEYCODE_DONE:
// 处理完成键事件
break;
default:
// 将按键字符添加到EditText组件中
char code = (char) primaryCode;
editTextInputHistory.append(code);
break;
}
}
// 其他方法
}
现在,当你在其他应用中使用你的自定义输入法服务时,输入历史记录将会显示在EditText组件中。你可以根据需要进一步扩展和自定义这个功能。