Android实现简单的城市列表功能

<&＃63;xml version="1.0" encoding="utf-8"&＃63;> 
 
 
   
   
 
 
 

package com.bwei.czx.czx; 
 
import android.content.Intent; 
import android.os.Bundle; 
import android.support.v7.app.AppCompatActivity; 
import android.view.View; 
import android.widget.Button; 
import android.widget.TextView; 
 
import com.example.city_picker.CityListActivity; 
 
public class MainActivity extends AppCompatActivity { 
 
  private TextView tv; 
 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    Button btn = (Button) findViewById(R.id.btn); 
    tv = (TextView) findViewById(R.id.name); 
    btn.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
        CityListActivity.startCityActivityForResult(MainActivity.this); 
 
      } 
    }); 
  } 
  @Override 
  protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 
    if(requestCode == 101&& resultCode ==102){ 
      String city = data.getStringExtra("city"); 
      tv.setText(city); 
    } 
  } 
}