你更改后他还是不行。其实
问题不止这个，还有很多很多，这个
问题我想放到最后再去修改，在这之前有个SearchResultActivity，也是你上面提供的，代码如下：package com.example.bus;
import
android.content.Intent;
import
android.os.Bundle;
import
android.widget.Button;
import
android.widget.EditText;
import
android.widget.Toast;
import
androidx.appcompat.app.AppCompatActivity;
import
androidx.recyclerview.widget.LinearLayoutManager;
import
androidx.recyclerview.widget.RecyclerView;
import com.amap.api.services.core.LatLonPoint;
import com.amap.api.services.core.PoiItem;
import com.amap.api.services.poisearch.PoiResult;
import com.amap.api.services.poisearch.PoiSearch;
import java.util.ArrayList;
import java.util.List;
public class SearchResultActivity extends AppCompatActivity implements PoiSearch.OnPoiSearchListener {
private EditText searchInput;
private Button searchBtn;
private RecyclerView resultListView;
private Button goToBtn;
private List<PoiItem> poiList = new ArrayList<>();
private ResultAdapter adapter;
private PoiSearch poiSearch;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search_result);
initViews();
setupSearch();
}
private void initViews() {
searchInput = findViewById(R.id.search_input);
searchBtn = findViewById(R.id.search_btn);
resultListView = findViewById(R.id.result_list);
goToBtn = findViewById(R.id.btn_go_to);
}
private void setupSearch() {
// 接收传入关键词
String keyword = getIntent().getStringExtra("keyword");
if (keyword != null && !keyword.isEmpty()) {
searchInput.setText(keyword);
performSearch(keyword);
}
searchBtn.setOnClickListener(v -> {
String text = searchInput.getText().toString().trim();
if (!text.isEmpty()) performSearch(text);
else Toast.makeText(this, "请输入关键词", Toast.LENGTH_SHORT).show();
});
goToBtn.setEnabled(false);
goToBtn.setOnClickListener(v -> {
if (!poiList.isEmpty()) {
PoiItem target = poiList.get(0); // 默认选第一个
LatLonPoint point = target.getLatLonPoint();
Intent intent = new Intent(this, RoutePlanActivity.class);
intent.putExtra("start_mode", "my_location"); // 表示从“我的位置”出发
intent.putExtra("target_lat", point.getLatitude());
intent.putExtra("target_lng", point.getLongitude());
intent.putExtra("target_title", target.getTitle());
startActivity(intent);
}
});
}
private void performSearch(String keyword) {
PoiSearch.Query query = new PoiSearch.Query(keyword, "busstation|busline", ""); // 只搜公交相关
query.setPageSize(20);
try {
poiSearch = new PoiSearch(this, query);
poiSearch.setOnPoiSearchListener(this);
poiSearch.searchPOIAsyn(); // 异步方法 → 不会抛异常
} catch (Exception e) {
e.printStackTrace();
Toast.makeText(this, "搜索初始化失败，请检查地图服务", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onPoiSearched(PoiResult result, int rCode) {
if (rCode == 1000 && result != null && result.getPois() != null) {
poiList.clear();
poiList.addAll(result.getPois());
if (adapter == null) {
adapter = new ResultAdapter(poiList, item -> {
// 可扩展：点击某个站点查看详情
});
resultListView.setLayoutManager(new LinearLayoutManager(this));
resultListView.setAdapter(adapter);
} else {
adapter.notifyDataSetChanged();
}
goToBtn.setEnabled(!poiList.isEmpty());
} else {
Toast.makeText(this, "搜索失败
: 错误码=" + rCode, Toast.LENGTH_SHORT).show();
}
}
@Override
public void onPoiItemSearched(PoiItem item, int rCode) {
// 本项目未使用单个 POI 搜索功能
}
}
activity_search_result.xml代码如下：
<LinearLayout xmlns
:android="http
://schemas.
android.com/apk/res/
android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="8dp"
android:fitsSystemWindows="true"
android:background="@color/surface_background">
<!-- 搜索栏 -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginBottom="8dp">
<EditText
android:id="@+id/search_input"
android:layout_width="0dp"
android:layout_height="48dp"
android:layout_weight="1"
android:hint="搜索公交站或线路"
android:padding="12dp"
android:background="
@drawable/rounded_edittext"
android:layout_marginEnd="8dp" />
<Button
android:id="@+id/search_btn"
android:layout_width="wrap_content"
android:layout_height="48dp"
android:text="搜索" />
</LinearLayout>
<!-- 搜索结果列表 -->
<
androidx.recyclerview.widget.RecyclerView
android:id="@+id/result_list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<!-- “到这去”按钮 -->
<Button
android:id="@+id/btn_go_to"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="到这去"
android:layout_marginTop="8dp"
android:backgroundTint="@color/design_default_color_primary" />
</LinearLayout>
首先，我不是很想用LinearLayout布局，我想用ConstraintLayout布局，而且呢这个布局我希望以百分比的形式显示在页面上，因为每个设备的长宽比都不一样，如果是固定了各部分组件的距离的话，他在另一个设备上显示就不美观了。其次，这个界面少了一个返回主界面的功能。这个的话，我之前那个activity_survey.xml就做得很好。activity_survey.xml代码如下：<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns
:android="http
://schemas.
android.com/apk/res/
android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp"
android:fitsSystemWindows="true"
android:background="@color/surface_background">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<!--
问题1：评分 -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_marginBottom="32dp"
android:text="🚌 用户体验调研"
android:textColor="#777777"
android:textSize="24sp"
android:textStyle="bold" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1. 您对本应用的整体评分是？"
android:textStyle="bold"
android:textColor="#777777"
android:layout_marginBottom="8dp" />
<RadioGroup
android:id="@+id/radioGroupRating"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="24dp">
<RadioButton
android:text="⭐ 1分 - 非常不满意"
android:textColor="@color/black"
android:id="@+id/rb1"
android:layout_height="match_parent"
android:layout_width="match_parent"/>
<RadioButton
android:text="⭐⭐ 2分 - 不满意"
android:textColor="@color/black"
android:id="@+id/rb2"
android:layout_height="match_parent"
android:layout_width="match_parent"/>
<RadioButton
android:text="⭐⭐⭐ 3分 - 一般"
android:textColor="@color/black"
android:id="@+id/rb3"
android:layout_height="match_parent"
android:layout_width="match_parent"/>
<RadioButton
android:text="⭐⭐⭐⭐ 4分 - 满意"
android:textColor="@color/black"
android:id="@+id/rb4"
android:layout_height="match_parent"
android:layout_width="match_parent"/>
<RadioButton
android:text="⭐⭐⭐⭐⭐ 5分 - 非常满意"
android:textColor="@color/black"
android:id="@+id/rb5"
android:layout_height="match_parent"
android:layout_width="match_parent"/>
</RadioGroup>
<!--
问题2：满意度 -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="2. 您对以下哪些方面或功能感到满意？（可多选）"
android:textColor="#777777"
android:textStyle="bold"
android:layout_marginBottom="8dp" />
<CheckBox
android:id="@+id/cb_ui"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="界面美观易用"
android:textColor="@color/black"/>
<CheckBox
android:id="@+id/cb_speed"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="加载速度快"
android:textColor="@color/black"/>
<CheckBox
android:id="@+id/cb_information"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="查询信息准确"
android:textColor="@color/black"/>
<CheckBox
android:id="@+id/cb_other"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="其他"
android:textColor="@color/black"/>
<!--
问题3：建议 -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="3. 您有什么改进建议？"
android:textColor="#777777"
android:textStyle="bold"
android:layout_marginTop="24dp"
android:layout_marginBottom="8dp" />
<EditText
android:id="@+id/et_suggestion"
android:layout_width="match_parent"
android:layout_height="120dp"
android:gravity="top"
android:hint="请输入您的建议..."
android:textColorHint="#777777"
android:textColor="@color/black"
android:inputType="textMultiLine"
android:minLines="3" />
<!-- 提交按钮 -->
<Button
android:id="@+id/btn_submit"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="提交反馈"
android:textSize="18sp"
android:layout_marginTop="32dp"
style="?
android:attr/buttonStyle" />
</LinearLayout>
</ScrollView>
SurveyActivity代码如下：package com.example.bus;
import
android.os.Bundle;
import
android.widget.*;
import
androidx.appcompat.app.AppCompatActivity;
import
android.content.Intent;
import
android.app.AlertDialog;
public class SurveyActivity extends AppCompatActivity {
private static final String FEEDBACK_EMAIL = "your_email@example.com"; // 修改为你自己的邮箱地址
private static final String EMAIL_SUBJECT = "用户调研反馈";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_survey);
// 显示 ActionBar 上的返回箭头
if (getSupportActionBar() != null) {
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setTitle("用户调研");
}
// 绑定控件
RadioGroup radioGroupRating = findViewById(R.id.radioGroupRating);
CheckBox cbUi = findViewById(R.id.cb_ui);
CheckBox cbSpeed = findViewById(R.id.cb_speed);
CheckBox cbInformation = findViewById(R.id.cb_information);
CheckBox cbOther = findViewById(R.id.cb_other);
EditText etSuggestion = findViewById(R.id.et_suggestion);
Button btnSubmit = findViewById(R.id.btn_submit);
// 提交按钮点击事件
btnSubmit.setOnClickListener(v -> {
// 获取评分
int selectedId = radioGroupRating.getCheckedRadioButtonId();
String rating = "未评分";
if (selectedId == R.id.rb1) rating = "1分";
else if (selectedId == R.id.rb2) rating = "2分";
else if (selectedId == R.id.rb3) rating = "3分";
else if (selectedId == R.id.rb4) rating = "4分";
else if (selectedId == R.id.rb5) rating = "5分";
// 获取满意度选项
StringBuilder satisfaction = new StringBuilder();
if (cbUi.isChecked()) satisfaction.append("界面美观易用, ");
if (cbSpeed.isChecked()) satisfaction.append("加载速度快, ");
if (cbInformation.isChecked()) satisfaction.append("功能丰富实用, ");
if (cbOther.isChecked()) satisfaction.append("其他, ");
String satisfactionStr = satisfaction.length() > 0 ?
satisfaction.substring(0, satisfaction.length() - 2)
: "无";
// 获取建议
String suggestion = etSuggestion.getText().toString().trim();
if (suggestion.isEmpty()) suggestion = "无";
// 拼接邮件正文
String body = String.format(
"用户调研反馈\n\n" +
"【整体评分】\n%s\n\n" +
"【满意项】\n%s\n\n" +
"【改进建议】\n%s\n\n" +
"---\n来自
Android 客户端自动提交",
rating, satisfactionStr, suggestion
);
// 发送邮件
sendEmail(body);
});
}
/**
* 发送邮件核心方法
*/
private void sendEmail(String body) {
try {
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("text/plain"); // 纯文本
// 设置收件人邮箱（必须为字符串数组）
intent.putExtra(Intent.EXTRA_EMAIL, new String[]{FEEDBACK_EMAIL});
// 设置主题和正文
intent.putExtra(Intent.EXTRA_SUBJECT, EMAIL_SUBJECT);
intent.putExtra(Intent.EXTRA_TEXT, body);
// 启动系统选择器
startActivity(Intent.createChooser(intent, "选择邮件客户端"));
} catch (Exception e) {
Toast.makeText(this,
"无法启动邮件应用，请安装Gmail、QQ邮箱等程序",
Toast.LENGTH_LONG).show();
}
}
@Override
public boolean onSupportNavigateUp() {
onBackPressed(); // 执行返回操作
return true; // 表示已处理该事件
}
}
我希望像这种在顶部的框加个能够返回主界面的东西。还有就是第三个，activity_search_result.xml上面不是也有个搜索框嘛，我希望在home界面搜索的内容也显示在这里，如果在搜索框重新点击搜索按钮后，底下会更新搜索数据，最好在这个界面也加一个地图，可以为用户提供地图选点功能，跟我map界面一样的加载地图流程。MapFragment代码如下：package com.example.bus.ui.map;
import
android.Manifest;
import
android.content.Intent;
import
android.content.pm.PackageManager;
import
android.os.Bundle;
import
android.view.LayoutInflater;
import
android.view.View;
import
android.view.ViewGroup;
import
android.widget.TextView;
import
android.widget.Toast;
import
androidx.annotation.NonNull;
import
androidx.core.content.ContextCompat;
import
androidx.fragment.app.Fragment;
import
androidx.lifecycle.ViewModelProvider;
import com.amap.api.maps.MapView;
import com.amap.api.maps.AMap;
import com.amap.api.maps.model.LatLng;
//import com.example.bus.R;
//import com.example.bus.databinding.FragmentMapBinding;
import com.amap.api.maps.CameraUpdateFactory;
import com.amap.api.maps.UiSettings;
import com.example.bus.R;
import com.example.bus.RoutePlanActivity;
import com.example.bus.databinding.FragmentMapBinding;
// MapView 已在 XML 中声明，无需额外 import（会自动识别）
public class MapFragment extends Fragment {
private FragmentMapBinding binding;
private MapView mapView; // 高德地图视图
private AMap aMap; // 地图控制器
private boolean isFirstLocationSet = false; // 防止反复跳转
@Override
public View onCreateView(@NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
// 初始化 ViewModel 和 ViewBinding
binding = FragmentMapBinding.inflate(inflater, container, false);
View root = binding.getRoot();
//绑定 MapView
mapView = root.findViewById(R.id.map_view);
mapView.onCreate(savedInstanceState); // 必须调用生命周期方法
// 初始化地图
initMap();
if (binding.mapSearch != null) {
binding.mapSearch.setOnClickListener(v -> {
String keyword = binding.mapInput2.getText().toString().trim();
if (keyword.isEmpty()) {
Toast.makeText(requireContext(), "请输入终点", Toast.LENGTH_SHORT).show();
return;
}
// ✅ 直接跳转路线页（不需要权限检查，因为能进此 Fragment 说明已有权限）
Intent intent = new Intent(requireContext(), RoutePlanActivity.class);
intent.putExtra("start_mode", "input"); // 表示从输入框获取起点
// TODO
: 可提取 map_input1.getText() 作为起点坐标（需先搜索）
intent.putExtra("target_lat", 0); // 暂空，实际应在搜索后填充
intent.putExtra("target_lng", 0);
intent.putExtra("target_title", keyword);
startActivity(intent);
});
}
return root;
}
/**
* 初始化地图
*/
private void initMap() {
if (aMap == null) {
aMap = mapView.getMap();
UiSettings uiSettings = aMap.getUiSettings();
uiSettings.setZoomControlsEnabled(true); // 显示缩放按钮
uiSettings.setCompassEnabled(true); // 显示指南针
uiSettings.setMyLocationButtonEnabled(false); // 我们自己控制定位行为
}
}
@Override
public void onResume() {
super.onResume(); //每次恢复可见时都检查权限状态
mapView.onResume();
// ✅ 直接开启定位图层（信任 MainActivity 的判断）
if (aMap != null) {
aMap.setMyLocationEnabled(true);
// 只第一次进入时移动相机
if (!isFirstLocationSet) {
LatLng defaultLoc = new LatLng(39.909186, 116.397411);
aMap.moveCamera(CameraUpdateFactory.newLatLngZoom(defaultLoc, 12f));
isFirstLocationSet = true;
}
}
}
@Override
public void onPause() {
super.onPause();
mapView.onPause();
}
@Override
public void onDestroyView() {
super.onDestroyView();
if (mapView != null) {
mapView.onDestroy();
}
binding = null;
}
@Override
public void onSaveInstanceState(@NonNull Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
}
fragment_map.xml代码如下：<?xml version="1.0" encoding="utf-8"?>
<
androidx.constraintlayout.widget.ConstraintLayout
xmlns
:android="http
://schemas.
android.com/apk/res/
android"
xmlns
:app="http
://schemas.
android.com/apk/res-auto"
xmlns
:tools="http
://schemas.
android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools
:context=".ui.map.MapFragment"
android:fitsSystemWindows="true"
android:background="@color/surface_background">
<
androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline_top_offset"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app
:layout_constraintGuide_percent="0.015" />
<!-- 🔹 起点输入框 -->
<EditText
android:id="@+id/map_input1"
android:layout_width="0dp"
android:layout_height="48dp"
android:hint="请输入起点"
android:textColorHint="#777777"
android:textColor="@color/black"
android:background="
@drawable/rounded_edittext"
android:padding="12dp"
android:layout_marginStart="16dp"
android:layout_marginEnd="8dp"
android:layout_marginTop="32dp"
app
:layout_constraintStart_toStartOf="parent"
app
:layout_constraintEnd_toStartOf="@id/guideline_search"
app
:layout_constraintTop_toTopOf="@id/guideline_top_offset" />
<!-- 🔹 终点输入框 -->
<EditText
android:id="@+id/map_input2"
android:layout_width="0dp"
android:layout_height="48dp"
android:hint="请输入终点"
android:textColorHint="#777777"
android:textColor="@color/black"
android:background="
@drawable/rounded_edittext"
android:padding="12dp"
android:layout_marginStart="16dp"
android:layout_marginEnd="8dp"
app
:layout_constraintStart_toStartOf="parent"
app
:layout_constraintEnd_toStartOf="@id/guideline_search"
app
:layout_constraintTop_toBottomOf="@id/map_input1" />
<!-- ✅ 分割线：75% 处（原样保留） -->
<
androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline_search"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app
:layout_constraintGuide_percent="0.75" />
<!-- 🔍 搜索按钮：纵向拉高，覆盖两个输入框 -->
<Button
android:id="@+id/map_search"
android:layout_width="0dp"
android:layout_height="0dp"
android:text="搜索"
android:textSize="16sp"
android:gravity="center"
app
:layout_constraintStart_toStartOf="@id/guideline_search"
app
:layout_constraintEnd_toEndOf="parent"
app
:layout_constraintTop_toTopOf="@id/map_input1"
app
:layout_constraintBottom_toBottomOf="@id/map_input2"
android:layout_marginEnd="16dp" />
<!-- 🗺️ 地图视图：从终点输入框下方开始，延伸到底部 -->
<com.amap.api.maps.MapView
android:id="@+id/map_view"
android:text="Bus-1.0"
android:textColor="#777777"
android:layout_width="0dp"
android:layout_height="0dp"
app
:layout_constraintStart_toStartOf="parent"
app
:layout_constraintEnd_toEndOf="parent"
app
:layout_constraintTop_toBottomOf="@id/map_input2"
app
:layout_constraintBottom_toBottomOf="parent"
android:layout_marginTop="4dp"
android:layout_marginBottom="0dp"/>
</
androidx.constraintlayout.widget.ConstraintLayout>
第四个，我在fragment_home中搜索的内容无论搜索什么他都还没有数据，这个搜索之后进入SearchResultActivity真的能搜得到高德数据吗？以上提到了home界面，在这里我顺便也把相关代码提供给你。fragment_home.xml代码如下：<?xml version="1.0" encoding="utf-8"?>
<
androidx.constraintlayout.widget.ConstraintLayout
xmlns
:android="http
://schemas.
android.com/apk/res/
android"
xmlns
:app="http
://schemas.
android.com/apk/res-auto"
xmlns
:tools="http
://schemas.
android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools
:context=".ui.home.HomeFragment"
android:fitsSystemWindows="true"
android:background="@color/surface_background">
<!-- 🔍 输入框 -->
<EditText
android:id="@+id/home_input"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:hint="请输入需要查询的公交线路或站点"
android:textColorHint="#777777"
android:textColor="@color/black"
android:background="
@drawable/rounded_edittext"
android:minHeight="48dp"
android:textSize="16sp"
android:padding="12dp"
app
:layout_constraintTop_toTopOf="parent"
app
:layout_constraintStart_toStartOf="parent"
app
:layout_constraintEnd_toStartOf="@id/home_search"
app
:layout_constraintHorizontal_chainStyle="packed"
android:layout_marginStart="16dp"
android:layout_marginEnd="8dp"
android:layout_marginTop="88dp" />
<!-- 🔎 搜索按钮 -->
<Button
android:id="@+id/home_search"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="搜索"
app
:layout_constraintTop_toTopOf="@id/home_input"
app
:layout_constraintBottom_toBottomOf="@id/home_input"
app
:layout_constraintStart_toEndOf="@id/home_input"
app
:layout_constraintEnd_toEndOf="parent"
android:layout_marginEnd="16dp" />
<!-- 🚌 图片：居中偏上 -->
<
ImageView
android:id="@+id/
image_bus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="fitCenter"
android:src="
@drawable/bus"
app
:layout_constraintTop_toBottomOf="@id/home_input"
app
:layout_constraintBottom_toTopOf="@+id/text_home"
app
:layout_constraintStart_toStartOf="parent"
app
:layout_constraintEnd_toEndOf="parent"
android:layout_marginTop="144dp"
android:layout_marginBottom="144dp"/>
<!-- ℹ️ 底部说明文字 -->
<TextView
android:id="@+id/text_home"
android:textColor="#777777"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:textAlignment="center"
android:textSize="11sp"
app
:layout_constraintTop_toBottomOf="@id/
image_bus"
app
:layout_constraintStart_toStartOf="parent"
app
:layout_constraintEnd_toEndOf="parent"
app
:layout_constraintBottom_toBottomOf="parent" />
</
androidx.constraintlayout.widget.ConstraintLayout>
HomeFragment代码如下：package com.example.bus.ui.home;
import
android.content.Intent;
import
android.os.Bundle;
import
android.view.LayoutInflater;
import
android.view.View;
import
android.view.ViewGroup;
import
android.widget.TextView;
import
android.widget.Toast;
import
androidx.annotation.NonNull;
import
androidx.fragment.app.Fragment;
import
androidx.lifecycle.ViewModelProvider;
import com.example.bus.MainActivity;
import com.example.bus.SearchResultActivity;
import com.example.bus.databinding.FragmentHomeBinding;
public class HomeFragment extends Fragment {
private FragmentHomeBinding binding;
public View onCreateView(@NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
com.example.bus.ui.home.HomeViewModel homeViewModel =
new ViewModelProvider(this).get(com.example.bus.ui.home.HomeViewModel.class);
binding = FragmentHomeBinding.inflate(inflater, container, false);
View root = binding.getRoot();
final TextView textView = binding.textHome;
homeViewModel.getText().observe(getViewLifecycleOwner(), textView
::setText);
binding.homeSearch.setOnClickListener(v -> {
String keyword = binding.homeInput.getText().toString().trim();
if (keyword.isEmpty()) {
Toast.makeText(requireContext(), "请输入关键词", Toast.LENGTH_SHORT).show();
return;
}
// ✅ 使用 MainActivity 的统一权限流程
MainActivity activity = (MainActivity) requireActivity();
activity.ensureFineLocationPermission(() -> {
// ✅ 权限通过后再跳转
Intent intent = new Intent(requireContext(), SearchResultActivity.class);
intent.putExtra("keyword", keyword);
startActivity(intent);
});
});
return root;
}
@Override
public void onDestroyView() {
super.onDestroyView();
binding = null;
}
}
本文探讨了在Android开发中引用图片资源的方式，特别是针对不同扩展名的图片文件如何被正确加载而不发生混淆的情况，并通过实测验证了加载优先级。
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2029
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