我最初使用自定义方法上传一些照片，但我决定使用AsyncTask上传照片，因为我想显示ProgessBar并且不明白如何在上传过程中使用原始方法中的一个。当我执行AsyncTask时，会抛出IllegalArgumentException，但我不明白为什么。
private void doFileUpload(){
Log.d("imagepath", "imagepath: " + imagepath);
finalPath = new File(imagepath);
if (!finalPath.exists()){
try {
finalPath.createNewFile();
copyFile(new File(filePath), finalPath);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Bitmap bmpPic = BitmapFactory.decodeFile(imagepath);
int MAX_IMAGE_SIZE = 300000; // max final file size
if ((bmpPic.getWidth() >= 600) && (bmpPic.getHeight() >= 600)) {
BitmapFactory.Options bmpOptions = new BitmapFactory.Options();
bmpOptions.inSampleSize = 1;
while ((bmpPic.getWidth() >= 600) && (bmpPic.getHeight() >= 600)) {
bmpOptions.inSampleSize++;
bmpPic = BitmapFactory.decodeFile(filePath, bmpOptions);
}
Log.d("bmpOptions.inSampleSize", "Resize: " + bmpOptions.inSampleSize);
}
int compressQuality = 104; // quality decreasing by 5 every loop. (start from 99)
int streamLength = MAX_IMAGE_SIZE;
while (streamLength >= MAX_IMAGE_SIZE) {
ByteArrayOutputStream bmpStream = new ByteArrayOutputStream();
compressQuality -= 5;
Log.d("compressQuality", "Quality: " + compressQuality);
bmpPic.compress(Bitmap.CompressFormat.JPEG, compressQuality, bmpStream);
byte[] bmpPicByteArray = bmpStream.toByteArray();
streamLength = bmpPicByteArray.length;
Log.d("streamLength", "Size: " + streamLength);
}
try {
FileOutputStream bmpFile = new FileOutputStream(finalPath);
bmpPic.compress(Bitmap.CompressFormat.JPEG, compressQuality, bmpFile);
bmpFile.flush();
bmpFile.close();
} catch (Exception e) {
Log.e("ERROR", "Error on saving file");
}
File file1 = new File(imagepath);
try
{
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(URL);
FileBody bin1 = new FileBody(file1,imageType);
//String abc=bin1.getMediaType();
//System.out.println("abc :"+abc);
System.out.println("imageType :"+imageType);
MultipartEntity reqEntity = new MultipartEntity();
if(use.equals("EditData")){
reqEntity.addPart("uploadedfile1", bin1);
reqEntity.addPart("uID", new StringBody(md5_id));
reqEntity.addPart("uPWD", new StringBody(md5_pass));
reqEntity.addPart("TYPE", new StringBody("NWPHOTO"));
reqEntity.addPart("REF", new StringBody(Ref));
reqEntity.addPart("CAT", new StringBody(cat0));
System.out.println("imageType :"+imageType+" "+md5_id+" "+md5_pass+" "+Ref+" "+cat0);
}else if(use.equals("NewData")){
reqEntity.addPart("uploadedfile1", bin1);
reqEntity.addPart("uID", new StringBody(md5_id));
reqEntity.addPart("uPWD", new StringBody(md5_pass));
reqEntity.addPart("TYPE", new StringBody("INSERTNW"));
reqEntity.addPart("Title", new StringBody(newTitle));
reqEntity.addPart("News", new StringBody(newNews));
reqEntity.addPart("CAT", new StringBody(cat0));
reqEntity.addPart("use", new StringBody("NewData"));
System.out.println("imageType :"+imageType+" "+md5_id+" "+md5_pass+" "+cat0+" "+newNews+" "+newTitle);
}
post.setEntity(reqEntity);
HttpResponse response = client.execute(post);
resEntity = response.getEntity();
final String response_str = EntityUtils.toString(resEntity,"UTF-8");
if (resEntity != null) {
Log.i("RESPONSE PHOTO",response_str);
runOnUiThread(new Runnable(){
public void run() {
try {
System.out.println("n Response photo from server : " + response_str);
Toast.makeText(getApplicationContext(),"Upload Complete. Check the server uploads directory.", Toast.LENGTH_LONG).show();
} catch (Exception e) {
e.printStackTrace();
Log.e("log_tag", "error"+e.toString());
}
}
});
}
}
catch (Exception ex){
Log.e("Debug", "error: " + ex.getMessage(), ex);
}
}
堆栈跟踪
07-17 11:22:34.715: E/AndroidRuntime(18379): FATAL EXCEPTION: main
07-17 11:22:34.715: E/AndroidRuntime(18379): java.lang.IllegalArgumentException: View not attached to window manager
07-17 11:22:34.715: E/AndroidRuntime(18379): at android.view.WindowManagerImpl.findViewLocked(WindowManagerImpl.java:380)
07-17 11:22:34.715: E/AndroidRuntime(18379): at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:225)
07-17 11:22:34.715: E/AndroidRuntime(18379): at android.view.Window$LocalWindowManager.removeView(Window.java:432)
07-17 11:22:34.715: E/AndroidRuntime(18379): at android.app.Dialog.dismissDialog(Dialog.java:278)
07-17 11:22:34.715: E/AndroidRuntime(18379): at android.app.Dialog.access$000(Dialog.java:71)
07-17 11:22:34.715: E/AndroidRuntime(18379): at android.app.Dialog$1.run(Dialog.java:111)
07-17 11:22:34.715: E/AndroidRuntime(18379): at android.app.Dialog.dismiss(Dialog.java:268)
07-17 11:22:34.715: E/AndroidRuntime(18379): at com.planbiz.net.News_Edit$UploadImage.onPostExecute(News_Edit.java:1019)
07-17 11:22:34.715: E/AndroidRuntime(18379): at com.planbiz.net.News_Edit$UploadImage.onPostExecute(News_Edit.java:1)
07-17 11:22:34.715: E/AndroidRuntime(18379): at android.os.AsyncTask.finish(AsyncTask.java:417)
07-17 11:22:34.715: E/AndroidRuntime(18379): at android.os.AsyncTask.access$300(AsyncTask.java:127)
07-17 11:22:34.715: E/AndroidRuntime(18379): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429)
07-17 11:22:34.715: E/AndroidRuntime(18379): at android.os.Handler.dispatchMessage(Handler.java:99)
07-17 11:22:34.715: E/AndroidRuntime(18379): at android.os.Looper.loop(Looper.java:130)
07-17 11:22:34.715: E/AndroidRuntime(18379): at android.app.ActivityThread.main(ActivityThread.java:3687)
07-17 11:22:34.715: E/AndroidRuntime(18379): at java.lang.reflect.Method.invokeNative(Native Method)
07-17 11:22:34.715: E/AndroidRuntime(18379): at java.lang.reflect.Method.invoke(Method.java:507)
07-17 11:22:34.715: E/AndroidRuntime(18379): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
07-17 11:22:34.715: E/AndroidRuntime(18379): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
07-17 11:22:34.715: E/AndroidRuntime(18379): at dalvik.system.NativeStart.main(Native Method)
我的AsyncTask
class UploadImage extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(News_Edit.this);
pDialog.setMessage("Loading ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
protected String doInBackground(String... args) {
Log.d("imagepath", "imagepath: " + imagepath);
finalPath = new File(imagepath);
if (!finalPath.exists()){
try {
finalPath.createNewFile();
copyFile(new File(filePath), finalPath);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Bitmap bmpPic = BitmapFactory.decodeFile(imagepath);
int MAX_IMAGE_SIZE = 300000; // max final file size
if ((bmpPic.getWidth() >= 600) && (bmpPic.getHeight() >= 600)) {
BitmapFactory.Options bmpOptions = new BitmapFactory.Options();
bmpOptions.inSampleSize = 1;
while ((bmpPic.getWidth() >= 600) && (bmpPic.getHeight() >= 600)) {
bmpOptions.inSampleSize++;
bmpPic = BitmapFactory.decodeFile(filePath, bmpOptions);
}
Log.d("bmpOptions.inSampleSize", "Resize: " + bmpOptions.inSampleSize);
}
int compressQuality = 104; // quality decreasing by 5 every loop. (start from 99)
int streamLength = MAX_IMAGE_SIZE;
while (streamLength >= MAX_IMAGE_SIZE) {
ByteArrayOutputStream bmpStream = new ByteArrayOutputStream();
compressQuality -= 5;
Log.d("compressQuality", "Quality: " + compressQuality);
bmpPic.compress(Bitmap.CompressFormat.JPEG, compressQuality, bmpStream);
byte[] bmpPicByteArray = bmpStream.toByteArray();
streamLength = bmpPicByteArray.length;
Log.d("streamLength", "Size: " + streamLength);
}
try {
FileOutputStream bmpFile = new FileOutputStream(finalPath);
bmpPic.compress(Bitmap.CompressFormat.JPEG, compressQuality, bmpFile);
bmpFile.flush();
bmpFile.close();
} catch (Exception e) {
Log.e("ERROR", "Error on saving file");
}
File file1 = new File(imagepath);
try
{
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(URL);
FileBody bin1 = new FileBody(file1,imageType);
//String abc=bin1.getMediaType();
//System.out.println("abc :"+abc);
System.out.println("imageType :"+imageType);
MultipartEntity reqEntity = new MultipartEntity();
if(use.equals("EditData")){
reqEntity.addPart("uploadedfile1", bin1);
reqEntity.addPart("uID", new StringBody(md5_id));
reqEntity.addPart("uPWD", new StringBody(md5_pass));
reqEntity.addPart("TYPE", new StringBody("NWPHOTO"));
reqEntity.addPart("REF", new StringBody(Ref));
reqEntity.addPart("CAT", new StringBody(cat0));
System.out.println("imageType :"+imageType+" "+md5_id+" "+md5_pass+" "+Ref+" "+cat0);
}else if(use.equals("NewData")){
reqEntity.addPart("uploadedfile1", bin1);
reqEntity.addPart("uID", new StringBody(md5_id));
reqEntity.addPart("uPWD", new StringBody(md5_pass));
reqEntity.addPart("TYPE", new StringBody("INSERTNW"));
reqEntity.addPart("Title", new StringBody(newTitle));
reqEntity.addPart("News", new StringBody(newNews));
reqEntity.addPart("CAT", new StringBody(cat0));
reqEntity.addPart("use", new StringBody("NewData"));
System.out.println("imageType :"+imageType+" "+md5_id+" "+md5_pass+" "+cat0+" "+newNews+" "+newTitle);
}
post.setEntity(reqEntity);
HttpResponse response = client.execute(post);
resEntity = response.getEntity();
response_str = EntityUtils.toString(resEntity,"UTF-8");
}catch (Exception ex){
Log.e("Debug", "error: " + ex.getMessage(), ex);
}
return null;
}
protected void onPostExecute(String file_url) {
if (resEntity != null) {
pDialog.dismiss();
Log.i("RESPONSE PHOTO",response_str);
runOnUiThread(new Runnable(){
public void run() {
try {
System.out.println("n Response photo from server : " + response_str);
Toast.makeText(getApplicationContext(),"Upload Complete. Check the server uploads directory.", Toast.LENGTH_LONG).show();
} catch (Exception e) {
e.printStackTrace();
Log.e("log_tag", "error"+e.toString());
}
}
});
}
}
}
答案 0 :(得分：0)
OnPostExecute。尝试将方法更改为;
@Override
protected void onPostExecute(String file_url) {
if (resEntity != null) {
pDialog.dismiss();
Log.i("RESPONSE PHOTO",response_str);
Toast.makeText(getApplicationContext(),"Upload Complete. Check the server uploads directory.", Toast.LENGTH_LONG).show();
}
}
答案 1 :(得分：0)
你不需要在AsyncTask中启动新线程。尝试在不使用新线程的情况下完成所有任务。 （就像在你的onPostExecute()
AsyncTask可以正确，轻松地使用UI线程。这个班 允许执行后台操作并在UI上发布结果 线程，而不必操纵线程和/或处理程序。
异步任务由在a上运行的计算定义 后台线程，其结果发布在UI线程
阅读documentation以便更好地理解。
还尝试替换吐司中的上下文值
Toast.makeText(News_Edit.this,"Upload Complete. Check the server uploads directory.", Toast.LENGTH_LONG).show();