1. 示例代码

activity_main.xml 布局文件

AndroidManifest.xml 权限管理

MainActivity.java

import java.util.List;import android.app.Activity;import android.os.Bundle;import android.telephony.SmsManager;import android.text.TextUtils;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;public class MainActivity extends Activity {	private EditText et_number;	private EditText et_content;	private Button bt_send;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        et_content = (EditText) findViewById(R.id.et_content);        et_number = (EditText) findViewById(R.id.et_number);        bt_send = (Button) findViewById(R.id.bt_send);        bt_send.setOnClickListener(new OnClickListener() {			@Override			public void onClick(View v) {				String number = et_number.getText().toString().trim();				String content = et_content.getText().toString().trim();				if(TextUtils.isEmpty(number)||TextUtils.isEmpty(content)){					Toast.makeText(MainActivity.this, "号码或者短信内容不能为空", Toast.LENGTH_LONG).show();					return ;				}				//发送短信				SmsManager smsManager = SmsManager.getDefault();				List
    
      smsMessages = smsManager.divideMessage(content);				for(String smsMessage : smsMessages){					smsManager.sendTextMessage(number, null, smsMessage, null, null);					Toast.makeText(MainActivity.this, "短信发送完毕", Toast.LENGTH_LONG).show();				}			}		});    }    }