Android 单击跳转到打电话发短信界面，长按打电话发短信

<uses-permission android:name="android.permission.CALL_PHONE"/><uses-permission android:name="android.permission.SEND_SMS"/>

package com.example.call_sms;

import android.Manifest;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements View.OnLongClickListener {
    private EditText text_main_phone;
    private EditText text_main_sms;
    private Button btn_main_call;
    private Button btn_main_sms;
    private String[] permissions = {Manifest.permission.CALL_PHONE, Manifest.permission.SEND_SMS};
    public static final int REQUEST_CALL_CODE = 10086;
    public static final int REQUEST_SMS_CODE = 10010;

    View.OnClickListener onClickListener = new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (v == btn_main_call) {
                //跳转到打电话界面
                String action = Intent.ACTION_DIAL;
                String phone = text_main_phone.getText().toString();
                Uri uri = Uri.parse("tel:" + phone);
                Intent intent = new Intent(action, uri);
                startActivity(intent);
            } else if (v == btn_main_sms) {
                //跳转到发短信界面
                String action = Intent.ACTION_SENDTO;
                String phone = text_main_phone.getText().toString();
                String sms_body = text_main_sms.getText().toString();
                Uri uri = Uri.parse("smsto:" + phone);
                Intent intent = new Intent(action, uri);
                intent.putExtra("sms_body", sms_body);
                startActivity(intent);
            }
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        text_main_phone = (EditText) findViewById(R.id.text_main_phone);
        text_main_sms = (EditText) findViewById(R.id.text_main_sms);
        btn_main_call = (Button) findViewById(R.id.btn_main_call);
        btn_main_sms = (Button) findViewById(R.id.btn_main_sms);

        btn_main_call.setOnClickListener(onClickListener);
        btn_main_sms.setOnClickListener(onClickListener);
        btn_main_call.setOnLongClickListener(this);
        btn_main_sms.setOnLongClickListener(this);
    }

    @Override
    public boolean onLongClick(View v) {
        if (v == btn_main_call) {
            onCall();
        } else if (v == btn_main_sms) {
            onSendSms();
        }
        return true;
    }

    public void onCall() {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, permissions, REQUEST_CALL_CODE);
        } else {
            String action = Intent.ACTION_CALL;
            String phone = text_main_phone.getText().toString();
            Uri uri = Uri.parse("tel:" + phone);
            Intent intent = new Intent(action, uri);
            startActivity(intent);
        }
    }

    public void onSendSms() {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.SEND_SMS) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, permissions, REQUEST_SMS_CODE);
        } else {
            String phone = text_main_phone.getText().toString();
            String sms_body = text_main_sms.getText().toString();
            SmsManager smsManager = SmsManager.getDefault();
            smsManager.sendTextMessage(phone, null, sms_body, null, null);
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch (requestCode) {
            case REQUEST_CALL_CODE:
                if (grantResults.length>0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    onCall();
                } else {
                    Log.d("TAG", "Call Permission Not Granted");
                }
                break;
            case REQUEST_SMS_CODE:
                if (grantResults.length>0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    onSendSms();
                } else {
                    Log.d("TAG", "SMS Permission Not Granted");
                }
                break;
            default:
                break;
        }
    }

}