我想做一个相机捕获，图库存储在图库中，在屏幕上的图像视图中显示，并使用php，json将图像上传到服务器。我有它工作的JSON解析器代码。图像保存为＆＃34; temp＆＃34;并被覆盖（我不想要，因为我想要图库中的所有图片）我在下面发布我的代码，请指导我。
public class CamActivity extends Activity
{
private ImageView img;
int boundBoxInDp;
private static final int CAMERA_REQUEST = 1888;
Button bt1,bt2,btn;
ContentValues values;
int serverResponseCode = 0;
ProgressDialog dialog = null;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cam);
String path = android.os.Environment.getExternalStorageDirectory()+ File.separator
+ "sdcard" + File.separator + "sdcard";
img = (ImageView)findViewById(R.id.imageView1);// Assign imageview
BitmapDrawable drawable = (BitmapDrawable) img.getDrawable();//get image drawable and assign to bitmap drawable
final Bitmap bmap = drawable.getBitmap();//assign bitmap drawable to bmap which is a bitmap image variable
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
bmap.compress(Bitmap.CompressFormat.PNG, 100, outStream);// this and the line above can be ignored
//START CAMERA ON LAUNCH OF PAGE
Intent camera_intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
// Save code here
File f = new File(android.os.Environment.getExternalStorageDirectory(), "temp.png");
camera_intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f));
//Save code ends
startActivityForResult(camera_intent, CAMERA_REQUEST);
//START CAMERA ON LAUNCH OF PAGE ENDS
bt1=(Button)findViewById(R.id.button1);//button to go to next page
bt1.setOnClickListener (new OnClickListener()//click button to travel to the next page
{
public void onClick(View v)
{
img = (ImageView)findViewById(R.id.imageView1);
img.setScaleType(ScaleType.MATRIX);
BitmapDrawable drawable = (BitmapDrawable) img.getDrawable();
drawable.setFilterBitmap(true);
final Bitmap bmap = drawable.getBitmap();
//convert starts WORKS
//convert Bitmap to grayscale
Bitmap imgToGreyScale;
imgToGreyScale = toGrayscale(bmap);
//convert to threshold
Bitmap imgToBlackWhite;
imgToBlackWhite = ConvertToThreshold(imgToGreyScale);
//set ImageView
ImageView imgbit;
imgbit = (ImageView) findViewById(R.id.imageView1);
imgbit.getImageMatrix();
imgbit.setImageBitmap(imgToBlackWhite);
//conversion ends WORKS
Intent intent2 = new Intent(CamActivity.this,QrCodeActivity.class);
startActivity(intent2);
}
});
}
// FUNCTION STARTS--------------------------------------------------------------------------------------------
//Threshold Function -WORKS-
public Bitmap ConvertToThreshold(Bitmap anythingBmap)
{
int width = anythingBmap.getWidth();
int height = anythingBmap.getHeight();
int threshold = 120;
for(int x=0;x<width;x++){
for(int y=0;y<height;y++){
int pixel = anythingBmap.getPixel(x, y);
int gray = Color.red(pixel);
if(gray < threshold){
anythingBmap.setPixel(x, y, 0xFF000000);
} else{
anythingBmap.setPixel(x, y, 0xFFFFFFFF);
}
}
}
return anythingBmap;
}
//Threshold function ends
// Grayscale Function -WORKS-
public Bitmap toGrayscale(Bitmap bmpOriginal){
int width, height;
height = bmpOriginal.getHeight();
width = bmpOriginal.getWidth();
Bitmap bmpGrayscale = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
Canvas c = new Canvas(bmpGrayscale);
Paint paint = new Paint();
ColorMatrix cm = new ColorMatrix();
cm.setSaturation(0);
ColorMatrixColorFilter f = new ColorMatrixColorFilter(cm);
paint.setColorFilter(f);
c.drawBitmap(bmpOriginal, 0, 0, paint);
return bmpGrayscale;
}
// Grayscale Function ends
//FUNCTIONS ENDS----------------------------------------------------------------------------------------
//ONResult activity to get image
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK)
{
{
File f = new File(Environment.getExternalStorageDirectory().toString());
for (File temp : f.listFiles()) //Click and store
{
if (temp.getName().equals("temp.png")) {
f = temp;
break;
}
}
try {
Bitmap bitmap;
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmap = BitmapFactory.decodeFile(f.getAbsolutePath(),bitmapOptions);
ByteArrayOutputStream outStream = new ByteArrayOutputStream();//
bitmap.compress(Bitmap.CompressFormat.PNG, 100, outStream);
img.setImageBitmap(bitmap);
Bitmap GreyScaleBitmap =toGrayscale(bitmap);//UPLOAD THIS
upload(GreyScaleBitmap);
Bitmap ThresholdBitmap= ConvertToThreshold(bitmap);//UPLOAD THIS
String path = android.os.Environment.getExternalStorageDirectory()+ File.separator
+ "sdcard" + File.separator + "sdcard";
//f.delete();
OutputStream outFile = null;
File file = new File(path, String.valueOf(System.currentTimeMillis()) + ".png" +"");
try
{
outFile = new FileOutputStream(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();
}
}
}
}
private void upload(Bitmap greyScaleBitmap) {
ByteArrayOutputStream bao = new ByteArrayOutputStream();
greyScaleBitmap.compress(Bitmap.CompressFormat.JPEG, 90, bao);
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(
"http://example.com/imagestore/post");
MultipartEntity entity = new MultipartEntity( HttpMultipartMode.BROWSER_COMPATIBLE );
byte [] ba = bao.toByteArray();
try {
entity.addPart("img", new StringBody(new String(bao.toByteArray())));
httppost.setEntity(entity);
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
// Execute HTTP Post Request
HttpResponse response = null;
try {
response = httpclient.execute(httppost);
} catch (ClientProtocolException e) {
}
}
}
Php代码在
之下<?php
require("config.inc.php");
$target_path = "/uploads/";
$base=$_REQUEST['image'];
$name=$_REQUEST['cmd'];
echo $base;
echo $name;
// base64 encoded utf-8 string
$binary=base64_decode($base);
// binary, utf-8 bytes
header('Content-Type: bitmap; charset=utf-8');
// print($binary);
//$theFile = base64_decode($image_data);
$file = fopen($target_path, 'wb');
$file = fopen($name, 'wb');
fwrite($file, $binary);
fclose($file);
//move_uploaded_file($file,$target_path.$name);
copy($name,$target_path.$name);
?>
答案 0 :(得分：0)
PHP代码中您错误地覆盖$file对象
$file = fopen($target_path, 'wb');
$file = fopen($name, 'wb');
应替换为以下内容：
$file = fopen($target_path.$name, 'wb');
您还可以使用rand()或时间戳（即time()）将随机数附加到文件名