两个界面之间的信息传送通过 startActivityForResult()方法

最新推荐文章于 2023-04-26 10:05:30 发布

转载最新推荐文章于 2023-04-26 10:05:30 发布 · 152 阅读

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原文链接：http://www.cnblogs.com/dpxf/p/4318867.html

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#移动开发

本文展示了一个Android应用中使用Lidroid XUtils库进行网络GET请求的具体实现，包括请求数据、解析响应并显示到界面上的过程。同时，还介绍了如何通过按钮触发新的活动(Activity)并在返回时更新数据显示。

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package com.example.jsontextt;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;

import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
import com.lidroid.xutils.http.client.HttpRequest.HttpMethod;

public class MainActivity extends Activity implements OnClickListener{
    private TextView tv;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
       Log.i("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", "开始获取数据");
       tv=(TextView) findViewById(R.id.tv);
       tv.setOnClickListener(this);
       onLoad();
   }

   private void onLoad() {
       // TODO Auto-generated method stub
       String url="http://gandong.3gso.com:8080/Bemoved/" +
               "userpublish_ReadUserBemoved?type=Userbemove&userId" +
               "=f1e9de9447912cc00147913261c80005&Number" +
               "=0&login_user_id" +
               "=f1e9de944be05591014be2490cb5002e";
       new HttpUtils().send(HttpMethod.GET, url, new RequestCallBack<String>() {

           @Override
           public void onFailure(HttpException arg0, String arg1) {
               // TODO Auto-generated method stub

           }

           @Override
           public void onSuccess(ResponseInfo<String> arg0) {
               // TODO Auto-generated method stub
               String data=arg0.result;
               Log.i("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", data);
               tv.setText(data);
           }

       });
   }

   @Override
   public void onClick(View v) {
       // TODO Auto-generated method stub
       switch (v.getId()) {
       case R.id.tv:
           Intent intent=new Intent();
           intent.setClass(MainActivity.this, MainActivity2.class);
           startActivityForResult(intent, 123);
           break;

       default:
           break;
       }
   }
   @Override
   protected void onActivityResult(int requestCode, int resultCode, Intent data) {
       if (resultCode == 201) {
           Bundle bundle=data.getExtras();
           String str=" ";
           str=bundle.getString("edtinfo");
           tv.setText(str);
           Log.i("11111111111111111111111", str);
       }else if(resultCode == 200){

       }
       if(requestCode ==123 ){
           System.out.println("MainActivity传递过去的");
       }else{
           System.out.println("不是");
       }
   }

}
package com.example.jsontextt;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity2 extends Activity{
   private EditText edt;
   private Button but;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
       // TODO Auto-generated method stub
       super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        edt=(EditText) findViewById(R.id.edt1);
        but=(Button) findViewById(R.id.but);

        but.setOnClickListener(new OnClickListener() {

           @Override
           public void onClick(View arg0) {
               // TODO Auto-generated method stub
               Intent intent=new Intent(MainActivity2.this, MainActivity2.class);

               intent.putExtra("edtinfo", edt.getText().toString());
               setResult(201,intent);
               MainActivity2.this.finish();
           }
       });
   }

}