二月13日

最后完成了一这个小程序

还有主程序的代码

package com.eb.writeaccount;

import androidx.appcompat.app.AppCompatActivity;
import androidx.navigation.NavController;
import androidx.navigation.Navigation;
import androidx.navigation.ui.NavigationUI;

import android.content.Context;
import android.os.Bundle;
import android.view.inputmethod.InputMethodManager;

public class MainActivity extends AppCompatActivity {
    private NavController navController;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        navController = Navigation.findNavController(findViewById(R.id.fragment));
        NavigationUI.setupActionBarWithNavController(this,navController);
    }


    @Override
    public boolean onSupportNavigateUp() {
        InputMethodManager imm = (InputMethodManager) this.getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(findViewById(R.id.fragment).getWindowToken(),0);
        navController.navigateUp();
        return super.onSupportNavigateUp();
    }
}

和MyViewModel的代码

package com.eb.writeaccount;

import android.app.Application;

import androidx.annotation.NonNull;
import androidx.lifecycle.AndroidViewModel;
import androidx.lifecycle.LiveData;

import java.util.List;


public class MyViewModel extends AndroidViewModel {
    private writeRepostry writeRepostry;
    public MyViewModel(@NonNull Application application) {
        super(application);
        writeRepostry = new writeRepostry(application);
    }
    LiveData<List<Word>> getAllWordsLive() {
        return writeRepostry.getAllWordsLive();
    }
    LiveData<List<Word>> findWordsWithPattern(String patten) {
        return writeRepostry.findWordsWithPattern(patten);

    }
    void insertWords(Word... words) {
        writeRepostry.insertWords(words);
    }
    void updateWords(Word... words) {
        writeRepostry.updateWords(words);
    }
    void deleteWords(Word... words) {
        writeRepostry.deleteWords(words);
    }
    void deleteAllWords() {
        writeRepostry.deleteAllWords();
    }
}