我的应用上传了已拍摄的照片。但上传的照片非常小。我怎样才能把它做大？
这是我的代码：
public void maakfoto (View v) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, mImageCaptureUri);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
Bitmap photo = (Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(photo);
knop.setVisibility(Button.VISIBLE);
// CALL THIS METHOD TO GET THE URI FROM THE BITMAP
Uri tempUri = getImageUri(getApplicationContext(), photo);
// CALL THIS METHOD TO GET THE ACTUAL PATH
finalFile = new File(getRealPathFromURI(tempUri));
System.out.println(finalFile);
}
}
public Uri getImageUri(Context inContext, Bitmap inImage) {
// ByteArrayOutputStream bytes = new ByteArrayOutputStream();
//inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
String path = Images.Media.insertImage(inContext.getContentResolver(), inImage, "Title", null);
return Uri.parse(path);
}
public String getRealPathFromURI(Uri uri) {
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
return cursor.getString(idx);
}
public void upload (View v) {
HttpURLConnection connection = null;
DataOutputStream outputStream = null;
DataInputStream inputStream = null;
String pathToOurFile = finalFile.toString();
String urlServer = "http://www.xxx.nl/testmap/upload.php";
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int serverResponseCode;
String serverResponseMessage;
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1*1024*1024;
try
{
FileInputStream fileInputStream = new FileInputStream(new File(pathToOurFile) );
URL url = new URL(urlServer);
connection = (HttpURLConnection) url.openConnection();
// Allow Inputs & Outputs
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setUseCaches(false);
// Enable POST method
connection.setRequestMethod("POST");
connection.setRequestProperty("Connection", "Keep-Alive");
connection.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);
outputStream = new DataOutputStream( connection.getOutputStream() );
outputStream.writeBytes(twoHyphens + boundary + lineEnd);
outputStream.writeBytes("Content-Disposition: form-data; name=\"userfile\";filename=\"" + pathToOurFile +"\"" + lineEnd);
outputStream.writeBytes(lineEnd);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// Read file
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0)
{
outputStream.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
outputStream.writeBytes(lineEnd);
outputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// Responses from the server (code and message)
serverResponseCode = connection.getResponseCode();
serverResponseMessage = connection.getResponseMessage();
fileInputStream.close();
outputStream.flush();
outputStream.close();
}
catch (Exception ex)
{
//Exception handling
}
}
这是我的XML：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>
<LinearLayout style="@style/TitleBar">
<ImageButton style="@style/TitleBarAction"
android:contentDescription="@string/description_home"
android:src="@drawable/title_home"
android:onClick="onClickHome" />
<ImageView style="@style/TitleBarSeparator" />
<TextView
style="@style/TitleBarText"
android:text="Foto uploaden" />
</LinearLayout>
<ImageView
android:id="@+id/fotoVenster"
android:layout_width="match_parent"
android:layout_height="350dp"
android:layout_gravity="center_horizontal" />
<Button
android:id="@+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Maak foto"
android:layout_gravity="bottom"
android:onClick="maakfoto" />
<Button
android:id="@+id/uploadknop"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:onClick="upload"
android:text="Upload de bovenstaande foto" />
<ScrollView
android:id="@+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
</LinearLayout>
</ScrollView>
</LinearLayout>
如何让上传的照片更大？现在他们是最大的。 250 x 350像素。
谢谢！
答案 0 :(得分：1)
这是因为您使用intent返回的位图设置ImageView，默认情况下是缩略图。解决方案是将捕获的图像保存到手机上的某个位置，然后从此位置读取。继承人如何：
private void takePhoto()
{
Intent takePic = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
takePic.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(getTempFile(this)));
startActivityForResult(takePic, CAMERA_REQUEST);
}
创建位置的方法：
private File getTempFile(Context context)
{
// it will return /sdcard/image.tmp
final File path = new File(Environment.getExternalStorageDirectory(), context.getPackageName());
if (!path.exists())
{
path.mkdir();
}
return new File(path, "image.tmp");
}
不是从意图中获取图像，而是从保存的临时图像中检索图像：
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_REQUEST)
{
final File file = getTempFile(this);
try
{
Uri selectedImage;
String pathToMediaFile = MediaStore.Images.Media.insertImage(getContentResolver(), Uri.fromFile(file).getPath(), "", "Image taken via my app");
selectedImage = Uri.parse(pathToMediaFile);
String[] filePathColumn =
{ MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
cursor.close();
ImageCacheManager icm = new ImageCacheManager(this);
int scale = decodeFile(filePath);
Drawable dd = icm.loadLocalImage(filePath, scale);
imageView.setImageDrawable(dd);
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
然后，您可以像平常一样上传此图片，它将是完整尺寸。
如果有帮助，请告诉我。