Php android中文件到位图的转换
好的，我已经更新了我的问题。这是我的上传图像到服务器项目。一切正常，没有错误，但我一直得到10、12或16字节的文件。但名称和类型正确Php android中文件到位图的转换,php,android,file,bitmap,server,Php,Android,File,Bitmap,Server,好的，我已经更新了我的问题。这是我的上传图像到服务器项目。一切正常，没有错误，但我一直得到10、12或16字节的文件。但名称和类型正确 public class MainActivity extends AppCompatActivity implements View.OnClickListener { private int PICK_IMAGE_REQUEST = 1; private Button buttonChoose; private Button
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private int PICK_IMAGE_REQUEST = 1;
private Button buttonChoose;
private Button buttonUpload;
String attachmentName = "bitmap";
File f;
private ImageView imageView;
private Bitmap bitmap;
private Bitmap bit;
ByteArrayBody bitmapBody;
ContentBody contentPart;
private Uri filePath;
private String stringPath;
byte[] bitmapdata;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
int SDK_INT = android.os.Build.VERSION.SDK_INT;
if (SDK_INT > 8) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
buttonChoose = (Button) findViewById(R.id.buttonChoose);
buttonUpload = (Button) findViewById(R.id.buttonUpload);
imageView = (ImageView) findViewById(R.id.imageView);
buttonChoose.setOnClickListener(this);
buttonUpload.setOnClickListener(this);
}
}
private void showFileChooser() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE_REQUEST);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
filePath = data.getData();
Log.d(""+filePath,"PATHHH");
try {
bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), filePath);
} catch (Exception e) {
e.printStackTrace();
}
}
}
public void getStringImage(){
try {
stringPath = getRealPathFromUri(getApplicationContext(), filePath);
f = new File(stringPath);
Log.d("FAJLEE" + f, "2");
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100 /*ignored for png*/ , bos);
byte[] bitmapdata = bos.toByteArray();
FileOutputStream fos = new FileOutputStream(f);
fos.write(bitmapdata);
fos.flush();
fos.close();
} catch (Exception e) {
e.printStackTrace();
Log.e(getClass().getSimpleName(), "Error writing bitmap", e);
}
}
public static String getRealPathFromUri(Context context, Uri contentUri) {
Cursor cursor = null;
try {
String[] proj = { MediaStore.Images.Media.DATA };
cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
} finally {
if (cursor != null) {
cursor.close();
}
}
public void uploadImage(){
try {
Log.d("Stefna ", "ajdbarovde");
DefaultHttpClient httpclient = new DefaultHttpClient();
InputStream responseStream = null;
String responseString = "";
try {
HttpPost httppost = new HttpPost("http://studentskioglas.com/aplikacija/upload.php");
BitmapFactory.Options bmOptions = new BitmapFactory.Options();
bit = BitmapFactory.decodeFile(f.getAbsolutePath(), bmOptions);
// bit = BitmapFactory.decodeByteArray(bitmapdata, 0, bitmapdata.length, bmOptions);
Log.d("Usao u fajlee","");
HttpEntity reqEntity = MultipartEntityBuilder.create()
.addBinaryBody("bitmap", bitmapdata, ContentType.create("image/jpg"), f.getName())
.build();
Log.d("Stefan ", f+"FAJLEEE");
httppost.setEntity(reqEntity);
System.out.println("executing request " + httppost.getRequestLine());
HttpResponse response = httpclient.execute(httppost);Log.d("Stefan", "ispod");
try {
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
HttpEntity resEntity = response.getEntity();
if (resEntity != null) {
Log.d("Response content l: " + resEntity.getContentLength(), "");
responseStream = resEntity.getContent();
if (responseStream != null) {
BufferedReader br = new BufferedReader(new InputStreamReader(responseStream));
String responseLine = br.readLine();
String tempResponseString = "";
while (responseLine != null) {
tempResponseString = tempResponseString + responseLine + System.getProperty("line.separator");
responseLine = br.readLine();
}
br.close();
if (tempResponseString.length() > 0) {
responseString = tempResponseString;
Log.d(""+responseString,"");
}
}
}
} finally {
response = null;
}
} finally {
httpclient = null;
}
} catch (Exception e) {
e.printStackTrace();
} }
@Override
public void onClick(View v) {
if (v == buttonChoose) {
showFileChooser();
}
if(v == buttonUpload){
getStringImage();
uploadImage();
imageView.setImageBitmap(bit);
}
<?php
$target_path = "images/";
$target_path = $target_path . basename( $_FILES['bitmap']['name']);
if(file_put_contents($target_path, $_FILES['bitmap']['name'])) {
echo "The file ". basename( $_FILES['bitmap']['name']).
" has been uploaded";
} else{
echo "There was an error uploading the file, please try again!";
} ?>
File imgFile = new File(selectedImageUrl);
if(imgFile.exists()){
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
}
File imgFile = new File(selectedImageUrl);
if(imgFile.exists()){
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
}
File imgFile = new File(selectedImageUrl);
if(imgFile.exists()){
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
}
File imgFile = new File(selectedImageUrl);
if(imgFile.exists()){
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
}
我通常使用下面的helper方法，效果很好。试试看
public static Bitmap convertBLOB2Bitmap(byte[] blob) {
Options options = new BitmapFactory.Options();
Bitmap tmp = BitmapFactory.decodeByteArray(blob, 0, blob.length, options);
return tmp;
}
public static byte[] convertBitmap2BLOB(Bitmap bitmap) {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.PNG, 0 /* ignored for PNG */, bos);
return bos.toByteArray();
}
我通常使用下面的helper方法，效果很好。试试看
public static Bitmap convertBLOB2Bitmap(byte[] blob) {
Options options = new BitmapFactory.Options();
Bitmap tmp = BitmapFactory.decodeByteArray(blob, 0, blob.length, options);
return tmp;
}
public static byte[] convertBitmap2BLOB(Bitmap bitmap) {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.PNG, 0 /* ignored for PNG */, bos);
return bos.toByteArray();
}
我通常使用下面的helper方法，效果很好。试试看
public static Bitmap convertBLOB2Bitmap(byte[] blob) {
Options options = new BitmapFactory.Options();
Bitmap tmp = BitmapFactory.decodeByteArray(blob, 0, blob.length, options);
return tmp;
}
public static byte[] convertBitmap2BLOB(Bitmap bitmap) {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.PNG, 0 /* ignored for PNG */, bos);
return bos.toByteArray();
}
我通常使用下面的helper方法，效果很好。试试看
public static Bitmap convertBLOB2Bitmap(byte[] blob) {
Options options = new BitmapFactory.Options();
Bitmap tmp = BitmapFactory.decodeByteArray(blob, 0, blob.length, options);
return tmp;
}
public static byte[] convertBitmap2BLOB(Bitmap bitmap) {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.PNG, 0 /* ignored for PNG */, bos);
return bos.toByteArray();
}
谢谢，但它不起作用。他在“如果”中选择任意一种方式，但不转换回图像@Ravneet SinghProblem与AsyncTask在一起@Ravneet SinghThank的，但它不起作用。他在“如果”中选择任意一种方式，但不转换回图像@Ravneet SinghProblem与AsyncTask在一起@Ravneet SinghThank的，但它不起作用。他在“如果”中选择任意一种方式，但不转换回图像@Ravneet SinghProblem与AsyncTask在一起@Ravneet SinghThank的，但它不起作用。他在“如果”中选择任意一种方式，但不转换回图像@Ravneet SinghProblem与AsyncTask在一起@Ravneet SinghThank谢谢你。我原以为这会对我有帮助，但事实并非如此。我不知道为什么@Florian Barthme可能的问题是，
onActivityResultonActivityResultonActivityResultonActivityResultuploadImage（）AsyncTaskbitimageView.setImageBitmap（bit）位图数据的大小，并将其与服务器上的大小进行比较。如果存在差异，则在发送/检索代码时出错，如果没有，则您的bitmapdata
包含错误的数据。很少观察到，您将bitmapdata编码为PNG，并将其作为image/jpg发送到服务器。接下来，如果您喜欢使用成员变量，请使用返回结果的函数-getStringImage
就是一个很好的例子。使用成员字段会使跟踪代码中发生的事情变得更加困难。在不同的文件和位图之间加载和保存图像也太多了，除了将文件上传到服务器之外，我很难理解您想要做什么。我的位图数据是16，就像我在服务器上得到的一样，但我不知道为什么？我使用了Log.d（“DA”，“bm size:+bitmap.getByteCount（）/1024”）代码；Log.d（“DAA”，“baos size:+bos.size（）/1024”）；Log.d（“DAAA”，“字节大小：”+bitmapdata.length/1024）；第一个记录987其他两个记录16但为什么@Dalija Prasnikar如果uploadImage（）
是AsyncTask
，则在bit
变量初始化之前调用imageView.setImageBitmap（bit）
。但这很难说，因为您发布的代码片段并不能完整地描述正在发生的事情。您做得非常好。那真是我的问题。所以我已经删除了异步任务，现在我看到了图片。所以这不是我的问题。现在我确信我传递了良好的形象。但为什么我在服务器上读取的文件如此之小？它们不是0字节@Dalija PrasnikarCheck位图数据的大小