本章要点:
1、Android应用程序开发模式
2、拨号器&短信发送器小例程
1、Android应用程序开发模式
随着Android的发展,Android程序员 会有2种分工,一种 UI 设计 (美工) 一种 后台程序设计】 ,采用 b/s 架构
a、一般小应用设计模式:
先设计界面-->设计Activity-->业务层代码
b、做项目:
业务层代码 (Android Junit)-->设计界面-->设计Activity(MVC)
2、拨号器&短信发送器小例程
本章有2个小例程,用于学习,采用“先设计界面-->设计Activity-->业务层代码”
用处:
CRM客户关系管理系统 –> 手机 –>客户关系
姓名 电话 拨打 【拨打】
拨号器小应用:
界面部分:
main.xml<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/mobile"
/>
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/mobile"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/button"
android:id="@+id/button"
/>
</LinearLayout>
strings.xml<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="hello">Hello World, PhoneActivity!</string>
<string name="app_name">我的拨号器</string>
<string name="mobile">请输入手机号</string>
<string name="button">拨打此号码</string>
</resources>
AndroidManifest.xml<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.leo"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.CALL_PHONE"/>
<application android:icon="@drawable/phone" android:label="@string/app_name">
<activity android:name=".PhoneActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Activity部分:
PhoneActivity.javapackage com.leo;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class PhoneActivity extends Activity {
private EditText mobileText;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mobileText = (EditText)this.findViewById(R.id.mobile);
Button button = (Button)this.findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
String mobile = mobileText.getText().toString();
Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + mobile));//action,data
PhoneActivity.this.startActivity(intent);
}
});
}
}
运行截图:
===================================================================================
短信发送器小应用
界面部分:
main.xml<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/mobile"
/>
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/mobile"
/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/content"
/>
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:minLines="3"
android:id="@+id/content"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/button"
android:id="@+id/button"
/>
</LinearLayout>
string.xml<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="hello">Hello World, SMSActivity!</string>
<string name="app_name">短信发送器</string>
<string name="mobile">请输入手机号</string>
<string name="content">短信内容</string>
<string name="button">发送短信</string>
<string name="info">发送成功</string>
</resources>
AndroidManifest.xml<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.leo.activity"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.SEND_SMS"/>
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".SMSActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Activity:
SMSActivity.javapackage com.leo.activity;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class SMSActivity extends Activity {
private EditText mobileText;
private EditText contentText;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mobileText = (EditText)this.findViewById(R.id.mobile);
contentText = (EditText)this.findViewById(R.id.content);
Button button = (Button)this.findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
String mobile = mobileText.getText().toString();
String content = contentText.getText().toString();
SmsManager smsManager = SmsManager.getDefault();
if(content.length() > 70){
List<String> contents = smsManager.divideMessage(content);
for(String sms : contents){
smsManager.sendTextMessage(mobile, null, content, null, null);
}
}
else
{
smsManager.sendTextMessage(mobile, null, content, null, null);
}
Toast.makeText(SMSActivity.this, R.string.info, Toast.LENGTH_LONG).show();
}
});
}
}
运行截图: