如何从SD卡，相机和内部存储中选择照片并通过android studio中的电子邮件发送？ 另外，我如何通过电子邮件发送电话号码？

Question

以下是我选择图片并通过电子邮件发送的代码，但我无法从SD卡和内部存储中选择和发送任何照片 。 我是Android的新手，无法理解互联网上已有的建议。 请提供下面所需的代码更改，以及如何通过从用户通过应用程序获取的电子邮件发送电话号码 ？

MainActivity.java

package com.example.android.send_email_app;

import java.util.ArrayList;
import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends Activity {

    TextView edittextEmailAddress;
    EditText edittextEmailSubject;
    EditText edittextEmailText;
    ImageView btnAddFile, btnSend;
    ListView listViewFiles;

    ArrayList<Uri> arrayUri = new ArrayList<Uri>();
    ArrayAdapter<Uri> myFileListAdapter;

    final int RQS_LOADIMAGE = 0;
    final int RQS_SENDEMAIL = 1;

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

        edittextEmailAddress = (TextView) findViewById(R.id.email_address);
        edittextEmailSubject = (EditText)findViewById(R.id.email_subject);
        edittextEmailText = (EditText)findViewById(R.id.email_text);
        edittextEmailAddress.setText("abc@gmail.com");
        btnAddFile = (ImageView) findViewById(R.id.attachment);
        btnSend = (ImageView) findViewById(R.id.send);
        btnAddFile.setOnClickListener(btnAddFileOnClickListener);
        btnSend.setOnClickListener(btnSendOnClickListener);

        myFileListAdapter = new ArrayAdapter<Uri>(
                MainActivity.this,
                android.R.layout.simple_list_item_1,
                arrayUri);
        listViewFiles = (ListView)findViewById(R.id.filelist);
        listViewFiles.setAdapter(myFileListAdapter);
    }

    OnClickListener btnAddFileOnClickListener
            = new OnClickListener(){

        @Override
        public void onClick(View v) {
            Intent intent = new Intent(Intent.ACTION_PICK,
                    android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
            startActivityForResult(intent, RQS_LOADIMAGE);

        }};

    OnClickListener btnSendOnClickListener
            = new OnClickListener(){

        @Override
        public void onClick(View v) {
            String emailAddress = edittextEmailAddress.getText().toString();
            String emailSubject = edittextEmailSubject.getText().toString();
            String emailText = edittextEmailText.getText().toString();
            String emailAddressList[] = {emailAddress};

            Intent intent = new Intent();
            intent.putExtra(Intent.EXTRA_EMAIL, emailAddressList);
            intent.putExtra(Intent.EXTRA_SUBJECT, emailSubject);
            intent.putExtra(Intent.EXTRA_TEXT, emailText);

            if(arrayUri.isEmpty()){
                //Send email without photo attached
                intent.setAction(Intent.ACTION_SEND);
                intent.setType("plain/text");
            }else if(arrayUri.size() == 1){
                //Send email with ONE photo attached
                intent.setAction(Intent.ACTION_SEND);
                intent.putExtra(Intent.EXTRA_STREAM, arrayUri.get(0));
                intent.setType("image/*");
            }else{
                //Send email with MULTI photo attached
                intent.setAction(Intent.ACTION_SEND_MULTIPLE);
                intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, arrayUri);
                intent.setType("image/*");
            }

            startActivity(Intent.createChooser(intent, "Choose App to send email:"));

        }};

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub
        super.onActivityResult(requestCode, resultCode, data);

        if (resultCode == RESULT_OK){
            switch(requestCode){
                case RQS_LOADIMAGE:
                    Uri imageUri = data.getData();
                    arrayUri.add(imageUri);
                    myFileListAdapter.notifyDataSetChanged();
                    break;
                case RQS_SENDEMAIL:
                    break;
            }
        }
    }

}

activity_main.xml中

<RelativeLayout 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"
    android:paddingLeft="16dp"
    android:paddingRight="16dp"
    >


    <TextView
        android:layout_marginTop="20dp"
        android:id="@+id/email_txt_view"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Email To:"
        android:textStyle="bold"/>
    <TextView
        android:layout_marginTop="5dp"
        android:layout_below="@id/email_txt_view"
        android:id="@+id/email_address"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="textEmailAddress"
        android:text="abc@gmail.com"
        android:textStyle="bold|italic"
        android:textColor="@android:color/holo_blue_light"/>
    <TextView
        android:layout_marginTop="20dp"
        android:layout_below="@id/email_address"
        android:id="@+id/subject_txt_view"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Enter email Subject:"
        android:textStyle="bold"/>
    <EditText
        android:layout_below="@id/subject_txt_view"
        android:id="@+id/email_subject"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="textEmailSubject"/>
    <TextView
        android:layout_marginTop="20dp"
        android:layout_below="@id/email_subject"
        android:id="@+id/emailBody_txt_view"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Enter Text:"
        android:textStyle="bold"/>
    <EditText
        android:layout_below="@id/emailBody_txt_view"
        android:id="@+id/email_text"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>

   <ImageView
       android:layout_marginTop="20dp"
       android:layout_below="@id/email_text"
       android:id="@+id/attachment"
       android:layout_width="60dp"
       android:layout_height="60dp"
       android:src="@drawable/attachment"/>

    <ImageView
        android:layout_marginTop="20dp"
        android:layout_below="@id/email_text"
        android:layout_toRightOf="@id/attachment"
        android:id="@+id/send"
        android:layout_width="60dp"
        android:layout_height="60dp"
        android:src="@drawable/send" />

    <ListView
        android:layout_below="@id/send"
        android:id="@+id/filelist"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

</RelativeLayout>

Answer 1

使用JavaMail API在Android中发送电子邮件，而不使用默认/内置应用程序

尝试这种方式...这种方法的优点是你不必向邮件活动发送隐式意图..你可以从你的应用程序本身发送邮件..缺点是你必须打开电子邮件中安全性较低的应用程序选项..检查链接到结束