android使用Intent来实现页面跳转,Intent通过startActivity(Intent intent)或startActivityForResult(Intent intent,int resquestCode)方法来启动Activity,在新建Intent对象时来指定从A页面跳到B页面,

比如:

Intent i = new Intent(A.this,B.class);这就表示从A页面跳到B页面,

Intent对象通过调用putExtra方法来传递页面跳转时所需要传递的信息

比如:

putExtra(“给需要传递的信息命名”,需要传递的信息的内容)

Intent通过调用getStringExtra方法来接受传递过来的信息

getStringExtra(“传递过来的信息的名字”);

下面的代码将实现用户输入完信息之后点击登入按钮,页面将跳转到另一页面显示个人信息,然后在这个页面有一个返回按钮,点击返回按钮,页面将返回登入页面再次显示个人信息。

MainActivity.java

package com.example.hsy.register;

import android.content.Intent;

import android.support.annotation.IdRes;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.AdapterView;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.EditText;

import android.widget.RadioButton;

import android.widget.RadioGroup;

import android.widget.Spinner;

import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

EditText etName,etPwd;

Button btnLogin;

TextView tvShow;

RadioGroup rg;

RadioButton rbMale,rbFelMale;

CheckBox checkbox1,checkbox2,checkbox3;

Spinner spcity;

String sex="";

String hobby1="",hobby2="",hobby3="";

String result="";

String city="";

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.test);

init();

rglistener();

btnloginlistener();

box1listener();

box2listener();

box3listener();

splistener();

}

@Override

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

super.onActivityResult(requestCode, resultCode, data);

tvShow.setText("返回结果是:"+"\n"+data.getStringExtra("result1").toString()+

"\n");

}

private void splistener() {

spcity.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

@Override

public void onItemSelected(AdapterView> parent, View view, int position, long id) {

city=(String) spcity.getSelectedItem();

}

@Override

public void onNothingSelected(AdapterView> parent) {

}

});

}

private void box3listener() {

checkbox3.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@Override

public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

if(isChecked){

hobby3="看书";

} else {

hobby3="";

}

}

});

}

private void box2listener() {

checkbox2.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@Override

public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

if(isChecked){

hobby2="游泳";

} else {

hobby2="";

}

}

});

}

private void box1listener() {

checkbox1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@Override

public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

if(isChecked){

hobby1="唱歌";

} else {

hobby1="";

}

}

});

}

private void btnloginlistener() {

btnLogin.setOnClickListener(new View.OnClickListener(){

@Override

public void onClick(View v){

result="用户名是:"+etName.getText().toString()+"\n"+"密码是:"+

etPwd.getText().toString()+"\n"+"性别是:"+sex+"\n"+"爱好是:"+hobby1+" "

+hobby2+" "+hobby3+" "+

"\n"+"所在城市:"+city;

//tvShow.setText(result);

Intent i = new Intent(MainActivity.this,Main2Activity.class);

i.putExtra("data1",result);

startActivityForResult(i,0);

}

});

}

private void rglistener() {

rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener(){

@Override

public void onCheckedChanged(RadioGroup group, @IdRes int checkedId){

if(checkedId== R.id.rbMale)

sex="男生";

else

sex="女生";

}

});

}

private void init() {

etName=(EditText) findViewById(R.id.etName);

etPwd=(EditText) findViewById(R.id.etPwd);

btnLogin=(Button) findViewById(R.id.btnLogin);

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

rg=(RadioGroup) findViewById(R.id.rg);

rbMale=(RadioButton) findViewById(R.id.rbMale);

rbFelMale=(RadioButton) findViewById(R.id.rbFeMale);

checkbox1=(CheckBox) findViewById(R.id.checkbox1);

checkbox2=(CheckBox) findViewById(R.id.checkbox2);

checkbox3=(CheckBox) findViewById(R.id.checkbox3);

spcity=(Spinner) findViewById(R.id.Spcity);

}

}

MainActivity2.java

package com.example.hsy.register;

import android.content.Intent;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.TextView;

public class Main2Activity extends AppCompatActivity {

TextView tvShow;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main2);

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

Intent intent = getIntent();

tvShow.setText(intent.getStringExtra("data1").toString());

findViewById(R.id.btnBack).setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

Intent intent1=new Intent(Main2Activity.this,MainActivity.class);

intent1.putExtra("result1",tvShow.getText().toString());

setResult(1,intent1);

finish();

}

});

}

}

test.

 

android:orientation="vertical" android:layout_width="match_parent"

android:layout_height="match_parent">

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:orientation="horizontal">

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="用户名:"

android:layout_marginLeft="10dp"

android:layout_marginTop="10dp"

android:textSize="20dp"

android:textColor="@color/colorPrimaryDark"/>

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:hint="输入2-10个字符"

android:layout_marginLeft="10dp"

android:layout_marginTop="10dp"

android:layout_weight="1"

android:id="@+id/etName"/>

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:orientation="horizontal">

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="密 码:"

android:layout_marginLeft="10dp"

android:layout_marginTop="10dp"

android:textSize="20dp"

android:textColor="@color/colorPrimaryDark"/>

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:hint="输入6-10个字符"

android:layout_marginLeft="10dp"

android:layout_marginTop="10dp"

android:layout_weight="1"

android:id="@+id/etPwd"/>

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:orientation="horizontal">

 

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="选择性别:"

android:layout_marginTop="10dp"

android:layout_marginLeft="10dp"

android:textSize="20dp"

android:textColor="@color/colorPrimary"

/>

 

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:orientation="horizontal"

android:id="@+id/rg">

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginLeft="15dp"

android:layout_marginTop="10dp"

android:textColor="@color/colorAccent"

android:textSize="10dp"

android:text="男"

android:id="@+id/rbMale"/>

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginLeft="15dp"

android:layout_marginTop="10dp"

android:textColor="@color/colorAccent"

android:textSize="10dp"

android:text="女"

android:id="@+id/rbFeMale"/>

 

android:layout_width="match_parent"

android:layout_height="wrap_content">

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginLeft="10dp"

android:layout_marginTop="10dp"

android:textSize="20dp"

android:textColor="@color/colorAccent"

android:text="兴趣爱好:"/>

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginLeft="10dp"

android:layout_marginTop="10dp"

android:textSize="15dp"

android:textColor="@color/colorAccent"

android:id="@+id/checkbox1"

android:text="唱歌"/>

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginLeft="10dp"

android:layout_marginTop="10dp"

android:textSize="15dp"

android:textColor="@color/colorAccent"

android:id="@+id/checkbox2"

android:text="游泳"/>

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginLeft="10dp"

android:layout_marginTop="10dp"

android:textSize="15dp"

android:textColor="@color/colorAccent"

android:id="@+id/checkbox3"

android:text="看书"/>

 

android:layout_width="match_parent"

android:layout_height="wrap_content">

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginLeft="5dp"

android:layout_marginTop="6dp"

android:textSize="15dp"

android:text="所在地"/>

 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginTop="6dp"

android:layout_marginLeft="10dp"

android:entries="@array/citys"

android:id="@+id/Spcity">

 

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="登录"

android:layout_marginTop="10dp"

android:textSize="20dp"

android:id="@+id/btnLogin"/>

 

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="20dp"

android:text="显示信息"

android:id="@+id/tvShow"/>

activity_main2

 

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"

android:orientation="vertical"

tools:context="com.example.hsy.register.Main2Activity">

 

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="10dp"

android:layout_marginLeft="10dp"

android:text="显示结果"

android:id="@+id/tvShow"/>

 

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginLeft="10dp"

android:layout_marginTop="10dp"

android:text="返回结果"

android:id="@+id/btnBack"/>