面对拍照并将其作为附件通过电子邮件客户端(android 应用程序)发送的问题

Question

我正在开发一个小型Android应用程序，让人们通过电子邮件客户端捐赠食物。拍照并查看其缩略图后，当我点击提交时，Gmail应用程序(电子邮件客户端(崩溃。基本上，我希望用户输入的信息通过电子邮件发送，以及刚才拍摄的照片中的图像附件。

我知道在图像文件附件区域周围做错了什么。帮助！

.XML：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="1">
<TextView
    android:id="@+id/textView7"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Name of Company / Individual:" />
<EditText
    android:id="@+id/etCompName"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:ems="10"
    android:inputType="textPersonName"
    android:textAllCaps="true"
    android:hint="Ex: Chicken Hut, Kaldi's Coffee, etc" />
<TextView
    android:id="@+id/textView8"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Telephone Number (required)" />
<EditText
    android:id="@+id/etPhone"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:ems="10"
    android:hint="Ex: 0922092161"
    android:inputType="phone" />
<TextView
    android:id="@+id/textView9"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Describe your Location:" />
<EditText
    android:id="@+id/etLocation"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:ems="10"
    android:inputType="textPersonName"
    android:textAllCaps="true"
    android:hint="Briefly describe where you are located..." />
<TextView
    android:id="@+id/textView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Food Type:" />
<EditText
    android:id="@+id/etFoodType"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:ems="10"
    android:inputType="textPersonName"
    android:textAllCaps="true"
    android:hint="Ex: Local Food, Sandwiches, etc." />
<TextView
    android:id="@+id/textView2"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Estimated Quantity (in grams):" />
<EditText
    android:id="@+id/etQuantity"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:ems="10"
    android:inputType="textPersonName"
    android:textAllCaps="true"
    android:hint="Ex: 1kg, 50g, etc." />
<TextView
    android:id="@+id/textView3"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Snap a Picture of Food (if available)" />
<ImageView
    android:id="@+id/ivFood"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:src="@mipmap/ic_launcher"
    android:layout_weight="0.9" />
<Button
    android:id="@+id/bCam"
    style="@style/Widget.AppCompat.Button.Borderless.Colored"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:elevation="0dp"
    android:background="#ee9d3e"
    android:text="Open Camera"
    android:textColor="#ffffff" />
<Button
    android:id="@+id/bSubmit"
    android:background="#cecbc8"
    android:textColor="#ffffff"
    style="@android:style/Widget.DeviceDefault.Button.Borderless"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Submit" />
     </LinearLayout>

.JAVA：

   package com.example.android.foodshare;
    import android.content.Intent;
    import android.graphics.Bitmap;
    import android.graphics.BitmapFactory;
    import android.net.Uri;
    import android.os.Bundle;
    import android.os.Environment;
     import android.provider.MediaStore;
    import android.support.v7.app.AppCompatActivity;
    import android.view.View;
    import android.widget.Button;
    import android.widget.EditText;
    import android.widget.ImageView;
    import android.widget.Toast;
    import java.io.File;
    import java.io.IOException;

     public class Donation extends AppCompatActivity implements 
     View.OnClickListener {
Button submit, open_cam;
EditText company_name;
EditText phone_number;
EditText location;
EditText foodType;
EditText quantity;
ImageView the_food;
String companyNameString;
String phoneNumberString;
String locationString;
String foodTypeString;
String quantityString;
String emailTo = "[e-mail]";
String emailContent;
String emailSubject;
static final int REQUEST_IMAGE_CAPTURE = 1;
Bitmap imageBitmap;

    @Override
    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.donation);
    submit = (Button) findViewById(R.id.bSubmit);
    open_cam = (Button) findViewById(R.id.bCam);
    the_food = (ImageView) findViewById(R.id.ivFood);
    company_name = (EditText) findViewById(R.id.etCompName);
    phone_number = (EditText) findViewById(R.id.etPhone);
    location = (EditText) findViewById(R.id.etLocation);
    foodType = (EditText) findViewById(R.id.etFoodType);
    quantity = (EditText) findViewById(R.id.etQuantity);
    submit.setOnClickListener(this);
    open_cam.setOnClickListener(this);
}
@Override
public void onClick(View v) {
    switch (v.getId()) {
        case R.id.bCam:

                Intent takePictureIntent = new 
         Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                if (takePictureIntent.resolveActivity(getPackageManager()) 
          != null) {
                    startActivityForResult(takePictureIntent, 
           REQUEST_IMAGE_CAPTURE);
                }
            break;
        case R.id.bSubmit:
            companyNameString = company_name.getText().toString();
            phoneNumberString = phone_number.getText().toString();
            locationString = location.getText().toString();
            foodTypeString = foodType.getText().toString();
            quantityString = quantity.getText().toString();
            emailContent = "You have received a Food Pickup Request. Please 
           find further details below:nn" +
                    "Name of Organization (or Individual): " + 
            companyNameString + "n" +
                    "Telephone Number: " + phoneNumberString + "n" +
                    "Location: " + locationString + "n" +
                    "Available Food Type: " + foodTypeString + "n" +
                    "Quantity Available: " + quantityString;
            emailSubject = "New Food Pickup Request From " + 
            companyNameString; // maybe add from which company
            Intent emailIntent = new Intent(Intent.ACTION_SEND);
            emailIntent.putExtra(Intent.EXTRA_EMAIL, new String[]{emailTo});
            emailIntent.putExtra(Intent.EXTRA_SUBJECT, emailSubject);
            emailIntent.putExtra(Intent.EXTRA_TEXT, emailContent);
            emailIntent.putExtra(Intent.EXTRA_STREAM, imageBitmap);
            //need this to prompts email client only
            emailIntent.setType("message/rfc822");
            try {
                startActivity(Intent.createChooser(emailIntent, "Send 
            mail..."));
            } catch (android.content.ActivityNotFoundException ex) {
                Toast.makeText(Donation.this, "There are no email clients 
            installed.", Toast.LENGTH_SHORT).show();
            }
            break;

    } // end of switch statement
    };
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent 
data) {
    if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
        Bundle extras = data.getExtras();
        imageBitmap = (Bitmap) extras.get("data");
        the_food.setImageBitmap(imageBitmap);
    }
}

  }

Answer 1

引用文档进行

EXTRA_STREAM：

内容：包含与意图关联的数据流的 URI，与ACTION_SEND一起使用以提供要发送的数据

您没有向Uri提供content方案。相反，您正在提供Bitmap 。可能是Gmail崩溃了，因为它试图将Bitmap投射到Uri。