装备选择

来源：互联网发布：java tag 编辑：程序博客网时间：2024/04/28 06:37

编写一个装备选择的程序：

一.创建程序：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Main"
android:orientation="vertical"
android:gravity="center">
<ImageView
android:id="@+id/pet_imgv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginBottom="5dp"
android:layout_marginTop="30dp"
android:src="@drawable/baby"/>
<TextView
android:id="@+id/pet_dialog_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
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" />
<TableLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="20dp">
<TableRow
android:layout_width="fill_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="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp">
<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_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="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp">
<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_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:drawableRight="@android:drawable/ic_menu_add"
android:onClick="click"
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:drawablePadding="3dp"
android:drawableRight="@android:drawable/ic_menu_add"
android:onClick="click2"
android:text="小宝宝购买装备"
android:textSize="14sp" />
</RelativeLayout>
</LinearLayout>

进度条是用控件ProgressBar来控制的，它用来显示小宝宝的生命力、攻击力、敏捷进度条。

二.创建装备界面：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rl"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<View
android:layout_width="30dp"
android:layout_height="30dp"
android:background="@android:drawable/ic_menu_info_details"
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"
android:layout_marginTop="5dp"/>
<TextView
android:id="@+id/tv_speed"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="13sp"
android:text="敏捷"
android:layout_marginTop="5dp"/>
</LinearLayout>
</RelativeLayout>

三.创建类：

package select.itcast.cn.huichuan;
/**
* Created by wanglaoda on 15-8-2.
*/
import java.io.Serializable;
//实现序列化方便传递数据
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 + "]";
}
}

需要注意的是，Intent除了传递基本类型之外，只能传递Serializable或Parcelable类型的数据，为了方便数据传递，在这里让ItemInfo类实现Serializable接口。

四.创建ShopActivity：

package select.itcast.cn.huichuan;
/**
* Created by wanglaoda on 15-8-2.
*/
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
public class ShopActivity extends Activity implements 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.rl).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 v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.rl:
Intent intent = new Intent();
intent.putExtra("equipment", itemInfo);
setResult(1, intent);
finish();
break;
}
}
}

上述代码中的重点代码是后几行，从这段代码中可以看出，使用setResult（）方法跳转Activity不需要指定要跳转的Activity。setReult（）方法的作用是让当前Activity返回到它的调用者，在这里可以理解为让ShopActivity返回到MainActivity。

五.编写界面交互：

1. package select.itcast.cn.huichuan;
3. import android.app.Activity;
4. import android.content.Intent;
5. import android.os.Bundle;
6. import android.view.Menu;
7. import android.view.MenuItem;
8. import android.view.View;
9. import android.widget.ProgressBar;
10. import android.widget.TextView;
13. public class Main extends Activity {
15. private ProgressBar mProgressBar1;
16. private ProgressBar mProgressBar2;
17. private ProgressBar mProgressBar3;
18. private TextView mLifeTV;
19. private TextView mAttackTV;
20. private TextView mSpeedTV;
22. @Override
23. protected void onCreate(Bundle savedInstanceState) {
24. super.onCreate(savedInstanceState);
25. setContentView(R.layout.activity_main);
26. mLifeTV = (TextView) findViewById(R.id.tv_life_progress);
27. mAttackTV = (TextView) findViewById(R.id.tv_attack_progress);
28. mSpeedTV = (TextView) findViewById(R.id.tv_speed_progress);
29. initProgress(); //初始化进度条
30. }
32. private void initProgress() {
33. mProgressBar1 = (ProgressBar) findViewById(R.id.progressBar1);
34. mProgressBar2 = (ProgressBar) findViewById(R.id.progressBar2);
35. mProgressBar3 = (ProgressBar) findViewById(R.id.progressBar3);
36. mProgressBar1.setMax(1000); //设置最大值1000
37. mProgressBar2.setMax(1000);
38. mProgressBar3.setMax(1000);
39. }
41. // 开启新的activity并且想获取他的返回值
42. public void click(View view) {
43. Intent intent = new Intent(this, ShopActivity.class);
44. startActivityForResult(intent, 1); // 返回请求结果,请求码为1
45. }
47. public void click2(View view) {
48. Intent intent = new Intent(this, ShopActivity.class);
49. startActivityForResult(intent, 1);
50. }
52. @Override
53. protected void onActivityResult(int requestCode, int resultCode, Intent data) {
54. super.onActivityResult(requestCode, resultCode, data);
55. if (data != null) {
56. // 判断结果码是否等于1,等于1为主人添加装备,等于2为宝宝添加装备
57. if (resultCode == 1) {
58. if (requestCode == 1) {
59. ItemInfo info= (ItemInfo) data.getSerializableExtra("equipment");
60. //更新ProgressBar的值
61. updateProgress(info);
62. }
63. }
64. }
65. }
66. //更新ProgressBar的值
67. private void updateProgress(ItemInfo info) {
68. int progress1 = mProgressBar1.getProgress();
69. int progress2 = mProgressBar2.getProgress();
70. int progress3 = mProgressBar3.getProgress();
71. mProgressBar1.setProgress(progress1+info.getLife());
72. mProgressBar2.setProgress(progress2+info.getAcctack());
73. mProgressBar3.setProgress(progress3+info.getSpeed());
74. mLifeTV.setText(mProgressBar1.getProgress()+"");
75. mAttackTV.setText(mProgressBar2.getProgress() + "");
76. mSpeedTV.setText(mProgressBar3.getProgress() + "");
77. }
79. @Override
80. public boolean onCreateOptionsMenu(Menu menu) {
81. // Inflate the menu; this adds items to the action bar if it is present.
82. getMenuInflater().inflate(R.menu.menu_main, menu);
83. return true;
84. }
86. @Override
87. public boolean onOptionsItemSelected(MenuItem item) {
88. // Handle action bar item clicks here. The action bar will
89. // automatically handle clicks on the Home/Up button, so long
90. // as you specify a parent activity in AndroidManifest.xml.
91. int id = item.getItemId();
93. //noinspection SimplifiableIfStatement
94. if (id == R.id.action_settings) {
95. return true;
96. }
98. return super.onOptionsItemSelected(item);
99. }
100. }
六.清单文件的配置：
1. <?xml version="1.0" encoding="utf-8"?>
2. <manifest xmlns:android="http://schemas.android.com/apk/res/android"
3. package="select.itcast.cn.huichuan" >
5. <application
6. android:allowBackup="true"
7. android:icon="@mipmap/ic_launcher"
8. android:label="@string/app_name"
9. android:theme="@style/AppTheme" >
10. <activity
11. android:name=".Main"
12. android:label="@string/app_name" >
13. <intent-filter>
14. <action android:name="android.intent.action.MAIN" />
16. <category android:name="android.intent.category.LAUNCHER" />
17. </intent-filter>
18. </activity>
19. <activity android:name=".ShopActivity"/>
20. </application>
22. </manifest>

0 0