项目截图
1 <?xml version="1.0" encoding="utf-8"?> 2 <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 xmlns:app="http://schemas.android.com/apk/res-auto" 4 xmlns:tools="http://schemas.android.com/tools" 5 android:layout_width="match_parent" 6 android:layout_height="match_parent" 7 tools:context=".MainActivity"> 8 9 <LinearLayout 10 android:layout_width="match_parent" 11 android:layout_height="match_parent" 12 android:orientation="horizontal"> 13 14 <Button 15 android:id="@+id/button" 16 android:layout_width="wrap_content" 17 android:layout_height="wrap_content" 18 android:layout_weight="1" 19 android:text="请选择城市" /> 20 21 <EditText 22 android:id="@+id/editText" 23 android:layout_width="wrap_content" 24 android:layout_height="wrap_content" 25 android:layout_weight="1" 26 android:ems="10" 27 android:inputType="textPersonName" /> 28 </LinearLayout> 29 </android.support.constraint.ConstraintLayout> activity_main.xml 1 package com.example.city; 2 3 import android.content.Intent; 4 import android.support.annotation.Nullable; 5 import android.support.v7.app.AppCompatActivity; 6 import android.os.Bundle; 7 import android.view.View; 8 import android.widget.Button; 9 import android.widget.EditText; 10 11 public class MainActivity extends AppCompatActivity { 12 13 private Button button; 14 private EditText editText; 15 16 @Override 17 protected void onCreate(Bundle savedInstanceState) { 18 super.onCreate(savedInstanceState); 19 setContentView(R.layout.activity_main); 20 button = (Button)findViewById(R.id.button); 21 editText = (EditText)findViewById(R.id.editText); 22 button.setOnClickListener(new View.OnClickListener() { 23 @Override 24 public void onClick(View v) { 25 Intent intent = new Intent(MainActivity.this, SelectCity.class); 26 startActivityForResult(intent,0); 27 } 28 }); 29 } 30 31 @Override 32 protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) { 33 super.onActivityResult(requestCode, resultCode, data); 34 if(requestCode==0 && resultCode==1){ 35 String cityName = data.getStringExtra("cityName"); 36 editText.setText(cityName); 37 } 38 } 39 } MainActivity.java 1 <?xml version="1.0" encoding="utf-8"?> 2 <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 xmlns:app="http://schemas.android.com/apk/res-auto" 4 xmlns:tools="http://schemas.android.com/tools" 5 android:layout_width="match_parent" 6 android:layout_height="match_parent" 7 tools:context=".SelectCity"> 8 9 <ListView 10 android:id="@+id/listView" 11 android:layout_width="match_parent" 12 android:layout_height="match_parent" /> 13 </android.support.constraint.ConstraintLayout> activity_select_city.xml 1 package com.example.city; 2 3 import android.content.Intent; 4 import android.support.v7.app.AppCompatActivity; 5 import android.os.Bundle; 6 import android.view.View; 7 import android.widget.AdapterView; 8 import android.widget.ArrayAdapter; 9 import android.widget.ListView; 10 11 public class SelectCity extends AppCompatActivity { 12 13 private ListView listView; 14 15 @Override 16 protected void onCreate(Bundle savedInstanceState) { 17 super.onCreate(savedInstanceState); 18 setContentView(R.layout.activity_select_city); 19 listView = (ListView)findViewById(R.id.listView); 20 String[] data = {"北京","上海","广州","深圳"}; 21 final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,data); 22 listView.setAdapter(arrayAdapter); 23 listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 24 @Override 25 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 26 Intent intent = new Intent(); 27 String cityName = arrayAdapter.getItem(position); 28 intent.putExtra("cityName",cityName); 29 setResult(1,intent); 30 finish(); 31 } 32 }); 33 } 34 } SelectCity.java
接受一切能进步的评论，谢谢各位大佬。
转载于:https://www.cnblogs.com/jdxb/p/10929399.html
