Android两个android两个activity之间相互传递数据之装备选择（书上案例）

这个是书上的一个案例，我将其完善了一点而已

xml

显示创建一个xml的主界面

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center"
tools:context="sorgs.com.selectequipment.MainActivity">

<ImageView
android:id="@+id/pet_imgv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginBottom="5dp"
android:layout_marginTop="30dp"
android:src="@drawable/body"/>

<TextView
android:id="@+id/pet_dialog_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginBottom="25dp"
android:gravity="center"
android:text="主人，快给小宝宝购买装备吧"/>

<TableLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="20dp">

<TableRow
android:layout_width="match_parent"
android:layout_height="wrap_content">

<TextView
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="生命值："
android:textColor="@android:color/black"
android:textSize="14sp"/>

<ProgressBar
android:id="@+id/progressBar1"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="2"/>

<TextView
android:id="@+id/tv_life_progress"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="0"
android:gravity="center"
android:textColor="#000000" />
</TableRow>

<TableRow
android:layout_width="match_parent"
android:layout_height="wrap_content">

<TextView
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="攻击力："
android:textColor="@android:color/black"
android:textSize="14sp"/>

<ProgressBar
android:id="@+id/progressBar2"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="2"/>

<TextView
android:id="@+id/tv_attack_progress"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="0"
android:gravity="center"
android:textColor="#000000" />
</TableRow>

<TableRow
android:layout_width="match_parent"
android:layout_height="wrap_content">

<TextView
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="敏捷："
android:textColor="@android:color/black"
android:textSize="14sp"/>

<ProgressBar
android:id="@+id/progressBar3"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="2"/>

<TextView
android:id="@+id/tv_speed_progress"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="0"
android:gravity="center"
android:textColor="#000000" />
</TableRow>
</TableLayout>

<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">

<Button
android:id="@+id/btn_master"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:onClick="click1"
android:drawablePadding="3dp"
android:text="主人购买装备"
android:textSize="14sp"/>

<Button
android:id="@+id/btn_baby"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:onClick="click2"
android:drawablePadding="3dp"
android:text="小宝宝购买装备"
android:textSize="14sp"/>
</RelativeLayout>
</LinearLayout>


然后在创建一个购买装备购买的页面

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/r1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">

<View
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"/>

<TextView
android:id="@+id/tv_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="60dp"
android:text="商品名称"/>

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:orientation="vertical">

<TextView
android:id="@+id/tv_life"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="13sp"
android:text="生命值"/>

<TextView
android:id="@+id/tv_attack"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="13sp"
android:text="攻击力"/>

<TextView
android:id="@+id/tv_speed"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="13sp"
android:text="速度"/>

</LinearLayout>
</RelativeLayout>

然后创建一个Itemfnfo类，用来封装装备信息



接着写代码

package sorgs.com.domain;

import java.io.Serializable;

/**
* Created by Administrator on 2016/11/20.
*/

public class ItemInfo implements Serializable{
private String name;
private int acctack;
private int life;
private int speed;

public ItemInfo(String name, int acctack, int life, int speed){
this.name = name;
this.acctack = acctack;
this.life = life;
this.speed = speed;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public int getAcctack() {
return acctack;
}

public void setAcctack(int acctack) {
this.acctack = acctack;
}

public int getLife() {
return life;
}

public void setLife(int life) {
this.life = life;
}

public int getSpeed() {
return speed;
}

public void setSpeed(int speed) {
this.speed = speed;
}

@Override
public String toString() {
return "[" + "name='" + name + ", acctack=" + acctack + ", life=" + life
+ ", speed=" + speed + "]";
}
}


然后创建一个shopactivity，用来展示主人装备信息的
package sorgs.com.selectequipment.sorgs.com;

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

import sorgs.com.domain.ItemInfo;
import sorgs.com.selectequipment.R;

/**
* Created by Administrator on 2016/11/20.
*/

public class ShopActivity extends Activity implements View.OnClickListener {

private ItemInfo itemInfo;

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_shop);

itemInfo = new ItemInfo("金剑",100,20,20);
findViewById(R.id.r1).setOnClickListener(this);
TextView mLifeTV = (TextView) findViewById(R.id.tv_life);
TextView mNameTV = (TextView) findViewById(R.id.tv_name);
TextView mSpeedTV = (TextView) findViewById(R.id.tv_speed);
TextView mAttackTV = (TextView) findViewById(R.id.tv_attack);
//TextView 显示字符串，这里传入int值编译不会报错，运行会出错
mLifeTV.setText("生命值+"+itemInfo.getLife());
mNameTV.setText(itemInfo.getName());
mSpeedTV.setText("敏捷度+"+itemInfo.getSpeed());
mAttackTV.setText("攻击力+"+itemInfo.getAcctack());
}

@Override
public void onClick(View view) {
switch (view.getId()){
case R.id.r1:
Intent intent = new Intent();
intent.putExtra("equipment",itemInfo);
setResult(1,intent); //设置请求码
finish();
break;
}
}
}


再建立一个shopactivity2，用来放宝宝购买装备
package sorgs.com.selectequipment.sorgs.com;

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

import sorgs.com.domain.ItemInfo;
import sorgs.com.selectequipment.R;

/**
* Created by Administrator on 2016/11/20.
*/

public class ShopActivity2 extends Activity implements View.OnClickListener{

private ItemInfo itemInfo;

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_shop);

itemInfo = new ItemInfo("银剑",50,10,10);
findViewById(R.id.r1).setOnClickListener(this);
TextView mLifeTV = (TextView) findViewById(R.id.tv_life);
TextView mNameTV = (TextView) findViewById(R.id.tv_name);
TextView mSpeedTV = (TextView) findViewById(R.id.tv_speed);
TextView mAttackTV = (TextView) findViewById(R.id.tv_attack);
//TextView 显示字符串，这里传入int值编译不会报错，运行会出错
mLifeTV.setText("生命值+"+itemInfo.getLife());
mNameTV.setText(itemInfo.getName());
mSpeedTV.setText("敏捷度+"+itemInfo.getSpeed());
mAttackTV.setText("攻击力+"+itemInfo.getAcctack());
}

@Override
public void onClick(View view) {
switch (view.getId()){
case R.id.r1:
Intent intent = new Intent();
intent.putExtra("equipment",itemInfo);
setResult(2,intent); //设置请求码
finish();
break;
}
}
}


最后编写我们的主函数
package sorgs.com.selectequipment;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.TextView;

import sorgs.com.domain.ItemInfo;
import sorgs.com.selectequipment.sorgs.com.ShopActivity;
import sorgs.com.selectequipment.sorgs.com.ShopActivity2;

public class MainActivity extends AppCompatActivity {

private ProgressBar mProgressBar1;
private ProgressBar mProgressBar2;
private ProgressBar mProgressBar3;
private TextView mLifeTV;
private TextView mAttackTV;
private TextView mSpeedTV;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

mLifeTV = (TextView) findViewById(R.id.tv_life_progress);
mAttackTV = (TextView) findViewById(R.id.tv_attack_progress);
mSpeedTV = (TextView) findViewById(R.id.tv_speed_progress);

initProgress(); //初始化进度条
}

private void initProgress() {
mProgressBar1 = (ProgressBar) findViewById(R.id.progressBar1);
mProgressBar2 = (ProgressBar) findViewById(R.id.progressBar2);
mProgressBar3 = (ProgressBar) findViewById(R.id.progressBar3);

mProgressBar1.setMax(1000); //设置最大的值1000
mProgressBar2.setMax(1000);
mProgressBar3.setMax(1000);
}

public void click1(View view){ //开启新的activity并且想获取他的返回值
Intent intent = new Intent(this, ShopActivity.class);
startActivityForResult(intent,1); //返回请求结果，请求码为1
}

public void click2(View view){ //开启新的activity并且想获取他的返回值
Intent intent = new Intent(this, ShopActivity2.class);
startActivityForResult(intent,2); //返回请求结果，请求码为2
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {//获取ShopActivity的装备信息
super.onActivityResult(requestCode, resultCode, data);
if (data != null){
if (resultCode==1){ //判断结果码是否等于1，等于1为主人添加装备
if (requestCode == 1){
ItemInfo info = (ItemInfo) data.getSerializableExtra("equipment");
updateProgress(info); //更新ProgressBar的值
}
}
else if (requestCode == 2){//判断结果码是否等于2，等于2为宝宝添加装备，
if (requestCode == 2){
ItemInfo info = (ItemInfo) data.getSerializableExtra("equipment");
updateProgress2(info); //更新ProgressBar的值
}
}
}
}

private void updateProgress2(ItemInfo info) {
int progress1 = mProgressBar1.getProgress();
int progress2 = mProgressBar2.getProgress();
int progress3 = mProgressBar3.getProgress();

mProgressBar1.setProgress(progress1+info.getLife());
mProgressBar2.setProgress(progress2+info.getAcctack());
mProgressBar3.setProgress(progress3+info.getSpeed());

mLifeTV.setText(mProgressBar1.getProgress()+"");
mAttackTV.setText(mProgressBar2.getProgress()+"");
mSpeedTV.setText(mProgressBar3.getProgress()+"");
}

private void updateProgress(ItemInfo info) { //更新ProgressBar的值
int progress1 = mProgressBar1.getProgress();
int progress2 = mProgressBar2.getProgress();
int progress3 = mProgressBar3.getProgress();

mProgressBar1.setProgress(progress1+info.getLife());
mProgressBar2.setProgress(progress2+info.getAcctack());
mProgressBar3.setProgress(progress3+info.getSpeed());

mLifeTV.setText(mProgressBar1.getProgress()+"");
mAttackTV.setText(mProgressBar2.getProgress()+"");
mSpeedTV.setText(mProgressBar3.getProgress()+"");
}
}

最后一步，去配置清单里面去配置一下



效果