从图库发送电子邮件的问题运行正常，但捕获的图像无法正常工作。我尝试了不同的代码，其中一些在这里被评论。或者只是解释并教我它是如何工作的。
该应用程序从用户那里获取日期，然后使用电子邮件将其发送到预定义的电子邮件地址，但是问题是图像可以通过两种方式附加：一种是从已经捕获的图库中获取图像，另一种是通过用户捕获图像，然后将其上传，然后将其作为附件发送到电子邮件。
这是我应用程序中的第二个活动
package com.example.medipostrx;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
public class secondpage extends Activity{
ImageView viewImage;
File pic;
Button b;
Button c;
String usernames;
String clnumber;
String clname;
String spnnr;
Uri imgui = null;
int h = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.secondpage);
Bundle data = getIntent().getExtras();
usernames = data.getString("user");
clnumber=data.getString("clnu");
clname=data.getString("clnam");
spnnr = data.getString("spn");
b=(Button)findViewById(R.id.btntake);
c= (Button) findViewById(R.id.btnsub);
final ImageView y = (ImageView) findViewById(R.id.viewImage);
c.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i = new Intent(Intent.ACTION_SEND);
//i.setType("message/rfc822");
i.putExtra(Intent.EXTRA_EMAIL , new String[]{"[email protected]"});
//i.putExtra(Intent.EXTRA_EMAIL , new String[]{"[email protected]"});
i.putExtra(Intent.EXTRA_SUBJECT, "Clinic Number: " + clnumber );
i.putExtra(Intent.EXTRA_TEXT , "Username: " + usernames + "\nClinic Number: " + clnumber + "\nClinic Name: " + clname + "\nBranch: " + spnnr);
//if(h==1){
if(imgui != null){
i.putExtra(Intent.EXTRA_STREAM, imgui);
i.setType("image/png");
}else{
i.setType("plain/text");
}
//}//else{
/*Drawable d =y.getBackground();
BitmapDrawable bitDw = ((BitmapDrawable) d);
Bitmap bitmap = bitDw.getBitmap();
File mFile = savebitmap(bitmap);
Uri u = null;
u = Uri.fromFile(mFile);
i.putExtra(Intent.EXTRA_STREAM, u);
i.setType("image/png");*/
//i.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(pic));
//i.setType("image/png");
//Toast.makeText(secondpage.this, "There are no email clients installed.", Toast.LENGTH_SHORT).show();
//}
try {
startActivity(Intent.createChooser(i, "Send mail..."));
} catch (android.content.ActivityNotFoundException ex) {
Toast.makeText(secondpage.this, "There are no email clients installed.", Toast.LENGTH_SHORT).show();
}
}
});
viewImage=(ImageView)findViewById(R.id.viewImage);
b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
selectImage();
}
});
}
private File savebitmap(Bitmap bmp) {
String extStorageDirectory = Environment.getExternalStorageDirectory().toString();
OutputStream outStream = null;
// String temp = null;
File file = new File(extStorageDirectory, "temp.png");
if (file.exists()) {
file.delete();
file = new File(extStorageDirectory, "temp.png");
}
try {
outStream = new FileOutputStream(file);
bmp.compress(Bitmap.CompressFormat.PNG, 100, outStream);
outStream.flush();
outStream.close();
} catch (Exception e) {
e.printStackTrace();
return null;
}
return file;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds options to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
private void selectImage() {
final CharSequence[] options = { "Take Photo", "Choose from Gallery","Cancel" };
AlertDialog.Builder builder = new AlertDialog.Builder(secondpage.this);
builder.setTitle("Add Photo!");
builder.setItems(options, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int item) {
if (options[item].equals("Take Photo"))
{
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File f = new File(android.os.Environment.getExternalStorageDirectory(), "temp.jpg");
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f));
startActivityForResult(intent, 1);
}
else if (options[item].equals("Choose from Gallery"))
{
Intent intent = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, 2);
}
else if (options[item].equals("Cancel")) {
dialog.dismiss();
}
}
});
builder.show();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
if (requestCode == 1) {
h=1;
File f = new File(Environment.getExternalStorageDirectory().toString());
for (File temp : f.listFiles()) {
if (temp.getName().equals("temp.jpg")) {
f = temp;
File photo = new File(Environment.getExternalStorageDirectory(), "temp.jpg");
break;
}
}
try {
Bitmap bitmap;
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmap = BitmapFactory.decodeFile(f.getAbsolutePath(),
bitmapOptions);
viewImage.setImageBitmap(bitmap);
String path = android.os.Environment
.getExternalStorageDirectory()
+ File.separator
+ "Phoenix" + File.separator + "default";
f.delete();
OutputStream outFile = null;
File file = new File(path, String.valueOf(System.currentTimeMillis()) + ".jpg");
try {
outFile = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 85, outFile);
//pic=file;
outFile.flush();
outFile.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
} catch (Exception e) {
e.printStackTrace();
}
} else if (requestCode == 2) {
Uri selectedImage = data.getData();
imgui = selectedImage;
String[] filePath = { MediaStore.Images.Media.DATA };
Cursor c = getContentResolver().query(selectedImage,filePath, null, null, null);
c.moveToFirst();
int columnIndex = c.getColumnIndex(filePath[0]);
String picturePath = c.getString(columnIndex);
c.close();
Bitmap thumbnail = (BitmapFactory.decodeFile(picturePath));
Log.w("path of image from gallery......******************.........", picturePath+"");
viewImage.setImageBitmap(thumbnail);
}
}
}
}`
我的xml文件是;
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<EditText
android:id="@+id/editText1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="@string/filenumber" >
<requestFocus />
</EditText>
<Button
android:id="@+id/btntake"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/takepicutre" />
<ImageView
android:id="@+id/viewImage"
android:layout_width="200dp"
android:layout_height="200dp"
android:layout_gravity="center"
android:src="@drawable/cameraa" />
<Button
android:id="@+id/btnsub"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/email" />
</LinearLayout>
Intent iShare;
iShare = new Intent(Intent.ACTION_SEND);
iShare.setType("image/png");
iShare.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://"+fn.getPath()));
iShare.putExtra(Intent.EXTRA_TEXT, Html.fromHtml(new StringBuilder()
.append("<p><b>Path</b></p>").append("<small><p>"+sb+"</p></small>").toString()));
startActivity(Intent.createChooser(iShare, "Share"));
AFAIK，您必须将捕获的图像作为附件发送到电子邮件中，然后可以尝试上面的代码。
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我来说两句