外部类作为事件监听器类

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监听器类

package com.crazyit.ui.viewlistener;

import android.app.Activity;
import android.app.PendingIntent;
import android.content.Intent;
import android.telephony.SmsManager;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

/**
 * 作者：Gaao on 2016/6/5 20:56
 * <p/>
 * 邮箱：xjs250@163.com
 */
public class SendSmsListener implements View.OnLongClickListener {

    private Activity act;

    private EditText address;
    private EditText content;

    public SendSmsListener(Activity act,EditText address,EditText content) {
        this.act = act;
        this.address = address;
        this.content = content;


    }

    @Override
    public boolean onLongClick(View v) {

        String addressStr = address.getText().toString().trim();
        String contentStr = address.getText().toString();

        //获取短信管理器
        SmsManager smsManager = SmsManager.getDefault();
        //创建发送短信的 PendingIntent
        PendingIntent sentIntent = PendingIntent.getBroadcast(act,0,new Intent(),0);
        //发送文本内容
        smsManager.sendTextMessage(addressStr,null,contentStr,sentIntent,null);
        Toast.makeText(act, "短信发送完成", Toast.LENGTH_SHORT).show();
        return false;
    }
}

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Activity

package com.crazyit.ui.viewlistener;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.EditText;

public class SendSmsActivity extends AppCompatActivity {
    private EditText address;
    private EditText content;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_send_sms);

        address = (EditText) findViewById(R.id.address);
        content  = (EditText) findViewById(R.id.content);
        Button btn = (Button) findViewById(R.id.send);

        btn.setOnLongClickListener(new SendSmsListener(this,address,content));
    }
}

布局文件

<?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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.crazyit.ui.viewlistener.SendSmsActivity">

    <EditText
        android:id="@+id/address"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入电话号码" />

    <EditText
        android:id="@+id/content"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入短信内容" />

    <Button
        android:id="@+id/send"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="right"
        android:text="发送" />
</LinearLayout>

发送短信时 要在清单文件中加上发送短信的权限
在 加入权限

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发短信相关的权限

    <!--  发送消息-->
    <uses-permission android:name="android.permission.SEND_SMS"/>
    <!--  阅读消息-->
    <uses-permission android:name="android.permission.READ_SMS"/>
    <!--  写入消息-->
    <uses-permission android:name="android.permission.WRITE_SMS" />
    <!-- 接收消息 -->
    <uses-permission android:name="android.permission.RECEIVE_SMS" />