装备选择
第一步，创建“装备选择”的工程
activity_main.xml
android:layout_height="wrap_content"
android:id="@+id/pet_imgv"
android:layout_gravity="center_horizontal"
android:layout_marginBottom="5dp"
android:layout_marginTop="30dp"
android:src="@drawable/baby" />
android:layout_height="wrap_content"
android:id="@+id/pet_dialog_tv"
android:layout_gravity="center_horizontal"
android:layout_marginBottom="25dp"
android:gravity="center"
android:text="主人，快给小宝宝购买装备吧"
/>
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="20dp">
android:layout_height="wrap_content">
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="生命值"
android:textColor="@android:color/black"
android:textSize="14sp"/>
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:id="@+id/progressBar"
android:layout_weight="2"
/>
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="0"
android:gravity="center"
android:textColor="#000000"/>
android:layout_height="wrap_content">
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="攻击力"
android:textColor="@android:color/black"
android:textSize="14sp"/>
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:id="@+id/progressBar2"
android:layout_weight="2"
/>
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="0"
android:gravity="center"
android:textColor="#000000"/>
android:layout_height="wrap_content">
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="敏捷"
android:textColor="@android:color/black"
android:textSize="14sp"/>
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:id="@+id/progressBar3"
android:layout_weight="2"
/>
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="0"
android:gravity="center"
android:textColor="#000000"/>
android:layout_height="wrap_content"
android:layout_marginLeft="50dp"
android:layout_marginRight="50dp"
android:layout_marginTop="20dp">
在上述布局中使用到了控件ProgressBar，它是用来展示小宝宝的生命值，攻击值和灵敏度的。
第二步，创建装备界面，用来展示装备
activity_shop.xml
android:id="@+id/r1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
android:layout_height="30dp"
android:background="@android:drawable/ic_menu_info_details"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"/>
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="60dp"
android:text="商品名称"/>
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:orientation="vertical">
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="13sp"
android:text="生命值"/>
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="13sp"
android:text="攻击力"/>
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="13sp"
android:text="速度"/>
第三步，创建一个类，用于封装装备信息
package com.edu.bzu.cn.domain;
import java.io.Serializable;
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;
}
public String toString(){
return "[name="+name+",acctack="+acctack+",life="+life+",speed="+speed+"]";
}
}
第四步，装备信息的展示，当单击shopActivity的装备时，会调回mainActivity并且将装备信息传给mainActivity.
package com.edu.bzu.cn.myapplication;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.TextView;
public class ShopActivity extends Activity implements View.OnClickListener{
private IntemInfo itemInfo;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_shop);
itemInfo = new ItemInfo("宝剑", 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);
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 v){
switch (v.getId()){
case R.id.r1:
Intent intent=new Intent();
intent.putExtra("equipment",itemInfo);
setResult(1,intent);
finish();
break;;
}
}
}
第五步，编写界面交互代码
package com.edu.bzu.cn.myapplication;
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;
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.progressBar);
mProgressBar2=(ProgressBar)findViewById(R.id.progressBar2);
mProgressBar3=(ProgressBar)findViewById(R.id.progressBar3);
mProgressBar1.setMax(1000);
mProgressBar2.setMax(1000);
mProgressBar3.setMax(1000);
}
//开启新的activity并且想获取它的返回值
public void click(View view){
Intent intent=new Intent(this,ShopActivity.class);
startActivityForResult(intent,1);//返回请求结果，请求吗为1
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(data!=null){
if (resultCode==1){
if (requestCode==1){
ItemInfo info=(ItemInfo)data.getSerializableExtra("equipment");
updateProgress(info);
}
}
}
}
private void updateProgress(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()+"");
}
}
第六步，清单文件的配置
android:name="cn.itcast.select.MainActivity" android:label="@string/app_name" 第七步，运行选择装备
