界面1：

<?xml version="1.0" encoding="utf-8"?>

界面2：

<?xml version="1.0" encoding="utf-8"?>

java代码1：

package com.example.duoapplication;

import android.content.Intent;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.EditText;

import android.widget.TextView;

public class Main1Activity extends AppCompatActivity {

private EditText xm;

private TextView tv;

@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main1);    xm = (EditText) findViewById(R.id.et);    tv = (TextView) findViewById(R.id.tv);}

public void onClick(View view){

String name = xm.getText().toString();

switch (view.getId()){

case R.id.pg:

Intent intent =new Intent(Main1Activity.this,Main2Activity.class);

intent.putExtra("name",name);

startActivityForResult(intent,1000);

break;

case R.id.tc:

finish();

}

}

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

super.onActivityResult(requestCode, resultCode, data);

if (requestCode==1000&&resultCode==1001){

String name = xm.getText().toString();

String qqq=data.getStringExtra("result");

tv.setText(name+"同学"+qqq+"信心");

}

}

}

java代码2

package com.example.duoapplication;

import android.content.Intent;

import android.support.v4.content.res.TypedArrayUtils;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

public class Main2Activity extends AppCompatActivity {

private TextView t;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main2);

t= (TextView)findViewById(R.id.t);

Intent xintent =getIntent();

String name = xintent.getStringExtra("name");

t.setText(name+":"+"学习有没有信心？");

}

public void xxx(View view){

switch (view.getId()){

case R.id.y:

case R.id.my:

Button but = (Button)view;

Intent mintent=new Intent();

String xxx= but.getText().toString();

mintent.putExtra("result",xxx);

setResult(1001,mintent);

finish();

}}

}

value值

duo Application

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