发送图片彩信案例：

按住加号，选择相册，把相册选择的图片加载的应用中，点击发送彩信，选择短信，发送彩信。

代码如下：

package com.example.client;import androidx.activity.result.ActivityResult;
import androidx.activity.result.ActivityResultCallback;
import androidx.activity.result.ActivityResultLauncher;
import androidx.activity.result.contract.ActivityResultContracts;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;public class SendMMSActivity extends AppCompatActivity {ActivityResultLauncher<Intent> mResultLauncher;ImageView iv_append;Uri selectedImageUri;private static final int PICK_IMAGE_REQUEST = 1;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_send_m_m_s);iv_append = findViewById(R.id.iv_append);}/*** 跳转到系统的相册，选择图片，并返回** @param view*/public void selectPic(View view) {Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);startActivityForResult(intent, PICK_IMAGE_REQUEST);}@Overrideprotected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {super.onActivityResult(requestCode, resultCode, data);if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {selectedImageUri = data.getData();iv_append.setImageURI(selectedImageUri);}}public void sendMms(View view) {Intent intent = new Intent(Intent.ACTION_SEND);intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);intent.setType("image/*");//彩信发送的目标号码intent.putExtra("address", 10086);intent.putExtra("subject", "测试发送彩信");intent.putExtra("sms_body", "测试发送彩信一下");intent.putExtra(Intent.EXTRA_STREAM, selectedImageUri);startActivity(intent);Toast.makeText(this, "请在弹窗中选择短信应用", Toast.LENGTH_SHORT).show();}
}

结果：