移动应用开发代码加资源

package com.example.theseventhexperiment; // 导入必要的包 import android.os.Bundle; import android.text.TextUtils; import android.view.View; import android.widget.*; import androidx.appcompat.app.AppCompatActivity; import java.util.*; public class AddContactActivity extends AppCompatActivity implements View.OnClickListener { // 声明UI组件 private ImageButton ib_back; private Button btn_tianjia; private EditText et_xingming, et_dianhuahaoma, et_dianziyoujian, et_beizhu, et_danweixinxi; private Spinner spinner; // 声明数据变量 private String name, e_mail, remark, unit_information, number, avatar, from; private int id; private Integer selectedImageResource; private UserDBHelper mHelper; private List> data; // 使用Integer类型，因为资源ID是整数 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_add_contact); // 初始化视图组件 initView(); // 设置监听器 setListener(); // 获取传递过来的数据 getValue(); // 设置视图内容 setView(); // 初始化并设置Spinner适配器 setupSpinner(); } // 初始化视图组件 private void initView() { ib_back = findViewById(R.id.ib_back); btn_tianjia = findViewById(R.id.btn_tianjia); et_xingming = findViewById(R.id.et_xingming); et_dianhuahaoma = findViewById(R.id.et_dianhuahaoma); et_dianziyoujian = findViewById(R.id.et_dianziyoujian); et_beizhu = findViewById(R.id.et_beizhu); et_danweixinxi = findViewById(R.id.et_danweixinxi); spinner = findViewById(R.id.spinner_contact_icon); } // 设置监听器 private void setListener() { ib_back.setOnClickListener(this); btn_tianjia.setOnClickListener(this); } // 获取传递过来的数据 private void getValue() { from = getIntent().getStringExtra("from"); if ("edit".equals(from)) { id = getIntent().getIntExtra("id", 0); name = getIntent().getStringExtra("name"); number = getIntent().getStringExtra("number"); avatar = getIntent().getStringExtra("avatar"); e_mail = getIntent().getStringExtra("e-mail"); remark = getIntent().getStringExtra("remark"); unit_information = getIntent().getStringExtra("unit_information"); // 对可能为null的字符串进行默认值处理 if (e_mail == null) e_mail = "无"; if (remark == null) remark = "无"; if (unit_information == null) unit_information = "无"; } } // 设置视图内容 private void setView() { if ("edit".equals(from)) { et_xingming.setText(name); et_dianhuahaoma.setText(number); et_dianziyoujian.setText(e_mail); et_beizhu.setText(remark); et_danweixinxi.setText(unit_information); } } // 初始化并设置Spinner适配器 private void setupSpinner() { // 准备数据 data = getListData(); // 创建SimpleAdapter并设置给Spinner SimpleAdapter simpleAdapter = new SimpleAdapter( this, data, R.layout.spinner_item, // 自定义布局 new String[]{"touxiang"}, // 数据源中的键 new int[]{R.id.imageView} // 布局中的ID ); spinner.setAdapter(simpleAdapter); // 设置Spinner选择监听器 spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView parent, View view, int position, long id) { // 获取选中的项并设置给selectedImageResource Map selectedItem = (Map) parent.getItemAtPosition(position); selectedImageResource = selectedItem.get("touxiang"); } @Override public void onNothingSelected(AdapterView parent) { // 不执行任何操作 } }); } // 获取Spinner列表数据 private List> getListData() { List> list = new ArrayList<>(); int[] touxiangResources = { R.drawable.touxiang1, R.drawable.touxiang2, R.drawable.touxiang3, R.drawable.touxiang4, R.drawable.touxiang5, R.drawable.touxiang6 }; for (int resource : touxiangResources) { Map item = new HashMap<>(); item.put("touxiang", resource); // 如果是编辑模式且当前资源是选中的头像，则将其添加到列表的开头 if ("edit".equals(from) && resource == Integer.parseInt(avatar)) { list.add(0, item); } else { list.add(item); } } return list; } // 数据库帮助器的初始化与关闭 @Override protected void onStart() { super.onStart(); mHelper = UserDBHelper.getInstance(this); mHelper.getReadableDatabase(); // 通常不需要显式调用，除非需要立即访问 mHelper.getWritableDatabase(); // 同上 } @Override protected void onStop() { super.onStop(); if (mHelper != null) { mHelper.close(); } } // 点击事件处理 @Override public void onClick(View v) { switch (v.getId()) { case R.id.ib_back: finish(); break; case R.id.btn_tianjia: // 获取输入框内容并进行校验 String et_name = et_xingming.getText().toString().trim(); String et_phone = et_dianhuahaoma.getText().toString().trim(); String et_email = et_dianziyoujian.getText().toString().trim(); String et_remark = et_beizhu.getText().toString().trim(); String et_unitInfo = et_danweixinxi.getText().toString().trim(); // 对空值或无效输入进行处理 if (TextUtils.isEmpty(et_name)) { Toast.makeText(this, "请输入姓名", Toast.LENGTH_SHORT).show(); } else if (TextUtils.isEmpty(et_phone) || !et_phone.matches("\\d+")) { Toast.makeText(this, "请输入有效的电话号码", Toast.LENGTH_SHORT).show(); } else { // 创建联系人对象并保存 Contacter contacter = new Contacter( et_name, et_phone, et_email, et_remark, et_unitInfo, selectedImageResource != null ? selectedImageResource.toString() : null ); if ("edit".equals(from)) { // 更新联系人 if (mHelper.updateContact(id, contacter) > 0) { Toast.makeText(this, "修改成功", Toast.LENGTH_SHORT).show(); finish(); } else { Toast.makeText(this, "修改失败", Toast.LENGTH_SHORT).show(); } } else if ("add".equals(from)) { // 添加联系人 if (mHelper.insert(contacter) > 0) { Toast.makeText(this, "添加成功", Toast.LENGTH_SHORT).show(); finish(); } else {