在我的应用程序中，我尝试将图像上传到使用 REST 技术接收的服务。
我将 intent 设置为启动相机功能和 onActionResult 来处理图像并将其传递给处理图像的 AsyncTask 到服务器。
代码:
package com.testingapp;
import java.io.File;
import java.io.IOException;
import java.util.Map;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import android.annotation.SuppressLint;
import android.app.ActionBar;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.hardware.Camera;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.provider.MediaStore.Images.ImageColumns;
import android.provider.MediaStore.MediaColumns;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
import android.widget.Toast;
@SuppressLint("NewApi")
public class HomeActivity extends Activity {
final static String DEBUG_TAG = "MakePhotoActivity";
protected static final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 0;
private Camera camera;
private int cameraId = 0;
HttpEntity resEntity;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ActionBar actionBar = getActionBar();
actionBar.setTitle("My Relocation");
actionBar.setIcon(R.drawable.menu_ic_launcher);
setContentView(R.layout.activity_home);
Bundle bundle = getIntent().getExtras();
final int cameraId = 0;
final TextView welcomeText = (TextView) findViewById(R.id.WelcomeText);
final TextView relocationId = (TextView) findViewById(R.id.RelocationID);
final TextView addressOne = (TextView) findViewById(R.id.addressOne);
final TextView addressTwo = (TextView) findViewById(R.id.addressTwo);
final String RelocationId = bundle.getString("UID");
relocationId.setText("Your Relocation: #" + RelocationId);
findViewById(R.id.viewMyContacts).setOnClickListener(
new OnClickListener() {
@Override
public void onClick(View view) {
String UserId = RelocationId;
Intent intent = new Intent(HomeActivity.this,
MoveContactsActivity.class);
intent.putExtra("UID1", UserId);
startActivity(intent);
}
});
findViewById(R.id.viewMyExpenses).setOnClickListener(
new OnClickListener() {
@Override
public void onClick(View view) {
String UserId = RelocationId;
Intent intent = new Intent(HomeActivity.this,
ViewRecieptsActivity.class);
intent.putExtra("UID3", UserId);
startActivity(intent);
}
});
findViewById(R.id.viewMyMoveDates).setOnClickListener(
new OnClickListener() {
@Override
public void onClick(View view) {
String UserID1 = RelocationId;
Intent intent = new Intent(HomeActivity.this,
MoveDatesActivity.class);
intent.putExtra("UID2", UserID1);
startActivity(intent);
}
});
findViewById(R.id.viewExpenseReceipts).setOnClickListener(
new OnClickListener() {
@Override
public void onClick(View view) {
}
});
findViewById(R.id.captureReceiptPhotoButton).setOnClickListener(
new OnClickListener() {
@SuppressLint("NewApi")
@Override
public void onClick(View view) {
// if (cameraCheck() == true) {
// camera.takePicture(null, null, new PhotoHandler(
// HomeActivity.this));
// }
String fileName = "TempPhoto";
ContentValues values = new ContentValues();
values.put(MediaColumns.TITLE, fileName);
values.put(ImageColumns.DESCRIPTION,
"Temporary Photo from Recipt Photo Taker");
File imageUri = new File(Environment.getExternalStorageDirectory(), "com.testingapp/");
if(!imageUri.exists()){
imageUri.mkdir();
}
Intent intent = new Intent(
MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
startActivityForResult(intent,
CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}
});
findViewById(R.id.WebAddress).setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
Uri uri = Uri.parse("http://www.Relocationmw.com");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_home, menu);
return true;
}
public boolean cameraCheck() {
int Cameras = Camera.getNumberOfCameras();
if (Cameras > 0) {
return true;
} else {
return false;
}
}
private File getTempFile(Context context){
//it should return /sdcard0/TempPhoto
final File path = new File( Environment.getExternalStorageDirectory(), "com.testingapp/" );
if(!path.exists()){
path.mkdir();
}
return new File(path, "TempPhoto");
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
Bundle CameraBundle = getIntent().getExtras();
// Grab image with Uri, Turn into Image and send through AsyncTask.
final File file = getTempFile(this);
// try {
// Bitmap captureBmp = Media.getBitmap(getContentResolver(), Uri.fromFile(file) );
// do whatever you want with the bitmap (Resize, Rename, Add To Gallery, etc)
new ImageUpload().execute(file);
} else if (resultCode == RESULT_CANCELED) {
Toast.makeText(this, "Picture was not taken",
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "Picture was not taken",
Toast.LENGTH_SHORT).show();
}
}
}
// Handle the conversion of File to Bitmap for Sending through Intent to
// PhotoPreview
private class ImageUpload extends AsyncTask<File, Void, String> {
@Override
protected void onPreExecute() {
if (checkNullState() == false) {
showMyDialog();
}
}
@Override
protected String doInBackground(File... file) {
String imageDescriptionTemp = "Photo Temp Description.";
String PostRequestUri = "https://demo.relocationmw.com/ws_docmgmt/Service1.svc";
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(PostRequestUri);
FileBody bin1 = new FileBody(file[0]);
MultipartEntity entity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
entity.addPart("Image", bin1);
post.setEntity(entity);
HttpResponse response;
try {
response = client.execute(post);
resEntity = response.getEntity();
final String response_string = EntityUtils.toString(resEntity);
if(resEntity != null){
Log.i("RESPONSE", response_string);
}
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String result) {
if (checkNullState() == true) {
dismissMyDialog();
}
// add location once we have that figured out.
Toast.makeText(HomeActivity.this, "Image can be viewed {Location}",
Toast.LENGTH_LONG).show();
}
protected void onProgressUpdate(Map... values) {
}
// ProgressDialog Tracking
private ProgressDialog pd1;
private boolean isMyDialogShowing;
boolean checkNullState() {
boolean test;
if (pd1 != null) {
test = true;
} else {
test = false;
}
return test;
}
void showMyDialog() {
isMyDialogShowing = true;
pd1 = new ProgressDialog(HomeActivity.this);
pd1.setTitle("Image Uploading");
pd1.setMessage("Uploading Image....");
pd1.show();
}
void dismissMyDialog() {
pd1.dismiss();
isMyDialogShowing = false;
}
}
}
有整个 Activity 。
这是 LogCat:
04-11 09:51:32.090: W/System.err(26030): java.io.FileNotFoundException: /storage/sdcard0/com.testingapp/TempPhoto: open failed: ENOENT (No such file or directory)
04-11 09:51:32.095: W/System.err(26030): at libcore.io.IoBridge.open(IoBridge.java:416)
04-11 09:51:32.095: W/System.err(26030): at java.io.FileInputStream.<init>(FileInputStream.java:78)
04-11 09:51:32.100: W/System.err(26030): at org.apache.http.entity.mime.content.FileBody.writeTo(FileBody.java:92)
04-11 09:51:32.100: W/System.err(26030): at org.apache.http.entity.mime.HttpMultipart.doWriteTo(HttpMultipart.java:206)
04-11 09:51:32.100: W/System.err(26030): at org.apache.http.entity.mime.HttpMultipart.writeTo(HttpMultipart.java:224)
04-11 09:51:32.105: W/System.err(26030): at org.apache.http.entity.mime.MultipartEntity.writeTo(MultipartEntity.java:183)
04-11 09:51:32.105: W/System.err(26030): at org.apache.http.impl.entity.EntitySerializer.serialize(EntitySerializer.java:97)
04-11 09:51:32.105: W/System.err(26030): at org.apache.http.impl.AbstractHttpClientConnection.sendRequestEntity(AbstractHttpClientConnection.java:162)
04-11 09:51:32.105: W/System.err(26030): at org.apache.http.impl.conn.AbstractClientConnAdapter.sendRequestEntity(AbstractClientConnAdapter.java:272)
04-11 09:51:32.105: W/System.err(26030): at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:237)
04-11 09:51:32.110: W/System.err(26030): at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:119)
04-11 09:51:32.110: W/System.err(26030): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:428)
04-11 09:51:32.110: W/System.err(26030): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:670)
04-11 09:51:32.110: W/System.err(26030): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:509)
04-11 09:51:32.115: W/System.err(26030): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
04-11 09:51:32.115: W/System.err(26030): at com.testingapp.HomeActivity$ImageUpload.doInBackground(HomeActivity.java:220)
04-11 09:51:32.115: W/System.err(26030): at com.testingapp.HomeActivity$ImageUpload.doInBackground(HomeActivity.java:1)
04-11 09:51:32.115: W/System.err(26030): at android.os.AsyncTask$2.call(AsyncTask.java:287)
04-11 09:51:32.115: W/System.err(26030): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
04-11 09:51:32.120: W/System.err(26030): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
04-11 09:51:32.120: W/System.err(26030): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
04-11 09:51:32.120: W/System.err(26030): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
04-11 09:51:32.125: W/System.err(26030): at java.lang.Thread.run(Thread.java:856)
04-11 09:51:32.125: W/System.err(26030): Caused by: libcore.io.ErrnoException: open failed: ENOENT (No such file or directory)
04-11 09:51:32.125: W/System.err(26030): at libcore.io.Posix.open(Native Method)
04-11 09:51:32.130: W/System.err(26030): at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
04-11 09:51:32.130: W/System.err(26030): at libcore.io.IoBridge.open(IoBridge.java:400)
04-11 09:51:32.130: W/System.err(26030): ... 22 more
我几乎 100% 确定我的导入是正确的，但我不明白为什么它不会从我指定保存到的位置获取文件。
任何帮助将不胜感激!
最佳答案
我相信相机想用“.jpg”文件扩展名保存您的图像。
请更改您的"TempPhoto" 文件名如下:
String fileName = "TempPhoto.jpg";
您还必须在 getTempFile() 中进行相同的更改:
return new File(path, "TempPhoto.jpg");
imageUri 应包含 intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri) 的 fileName，如下所示:
File imageUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(), "com.testingapp/" + fileName));
进一步的例子:
如何使用 native 选择菜单从相机或图库中捕捉照片:Allow user to select camera or gallery for image - 投票总数表明社区的高度信任。
关于android - 图片说它没有保存在文件位置，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15953695/