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我是Android新手，這是我的第一個項目。我有調查頁面，可以選擇上傳照片。 當我從廚房中選擇照片時，出現錯誤。錯誤似乎在753行：String [] strArray = str.split（「，」）;並在554上：String [] strArray = str.split（「，」）; 我不得不刪除大量張貼限制
PublicSurvay.java嘗試在空對象引用上調用虛擬方法'java.lang.String [] java.lang.String.split（java.lang.String）'
public class PublicSurvay extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener, LocationListener {
CheckBox c1, c2, c3, c4_sign;
String URLDATA, URLNEWDATA;
Location location;
LocationManager manager;
double l1 = 0, l2 = 0, l3 = 0, l4 = 0, l5 = 0, l6 = 0;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
btn_upload1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
new AlertDialog.Builder(PublicSurvay.this).setTitle("Select picture").setMessage("Choose Any one")
.setPositiveButton("Choose From Gallery", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i1) {
Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, 100);
}
}).setNegativeButton("Choose From Camera", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, 101);
}
}).show();
}
});
btn_upload2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
new AlertDialog.Builder(PublicSurvay.this).setTitle("Select picture").setMessage("Choose Any one")
.setPositiveButton("Choose From Gallery", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i1) {
Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, 200);
}
}).setNegativeButton("Choose From Camera", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, 102);
}
}).show();
}
});
btn_upload3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
new AlertDialog.Builder(PublicSurvay.this).setTitle("Select picture").setMessage("Choose Any one")
.setPositiveButton("Choose From Gallery", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i1) {
Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, 300);
}
}).setNegativeButton("Choose From Camera", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, 103);
}
}).show();
}
});
try {
manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
location = manager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location == null) {
location = manager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
l1 = location.getLatitude();
l2 = location.getLongitude();
} else {
l1 = location.getLatitude();
l2 = location.getLongitude();
}
} catch (Exception e) {
Toast.makeText(this, "Error", Toast.LENGTH_SHORT).show();
}
btn_submit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
dialog = ProgressDialog.show(PublicSurvay.this, "", "Sending data...", true);
URLDATA = "http://www.avj.890m.com/publicservay.php?uname=" + uname + "&email=" + email + "&address=" + address + "&tro_milk=" + tropical1 + "&c1=" + c_1 + "&c2=" + c_2 + "&c3=" + c_3 + "&plumeria=" + palumaria + "&terms=" + c_4 + "&lat=" + l1 + "&log1=" + l2 + "&l3=" + l3 + "&l4=" + l4 + "&l5=" + l5 + "&l6=" + l6;
URLDATA = URLDATA.replaceAll(" ", "%20");
Log.e("URLDATA", URLDATA);
new Thread(new Runnable() {
public void run() {
uploadFile1(uname, email, address, tropical1, c_1, c_2, c_3, palumaria, c_4, l1, l2, l3, l4, l5, l6);
}
}).start();
} else {
dialog = ProgressDialog.show(PublicSurvay.this, "", "Sending data...", true);
URLDATA = "http://www.avj.890m.com/publicservay.php?uname=" + uname + "&email=" + email + "&address=" + address + "&tro_milk=" + tropical1 + "&img_tro_milk=" + img1 + "&c1=" + c_1 + "&c2=" + c_2 + "&c3=" + c_3 + "&img_milk_spec=" + img2 + "&plumeria=" + palumaria + "&img_pulmeria=" + img3 + "&terms=" + c_4 + "&lat=" + l1 + "&log1=" + l2 + "&l3=" + l3 + "&l4=" + l4 + "&l5=" + l5 + "&l6=" + l6;
URLDATA = URLDATA.replaceAll(" ", "%20");
Log.e("URLDATA", URLDATA);
new Thread(new Runnable() {
public void run() {
uploadFile(uname, email, address, tropical1, img1, c_1, c_2, c_3, img2, palumaria, img3, c_4, l1, l2, l3, l4, l5, l6);
}
}).start();
}
}
});
}
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
if (compoundButton == c1) {
if (!b) {
} else {
c_1 = "true";
}
}
if (compoundButton == c2) {
if (!b) {
} else {
c_2 = "true";
}
}
if (compoundButton == c3) {
if (!b) {
} else {
c_3 = "true";
}
}
if (compoundButton == c4_sign) {
if (!b) {
} else {
c_4 = "true";
}
}
}
@Override
public void onLocationChanged(Location location) {
l1 = location.getLatitude();
l2 = location.getLongitude();
}
public int uploadFile(String uname, String email, String addressdata, String tropiw, String sourceFileUri, String
c1, String c2, String c3, String img11, String palumaria, String img22, String terms, double lat, double log1, double l3, double l4, double l5, double l6) {
try {
String fileName = sourceFileUri;
String fileName1 = img11;
HttpURLConnection conn = null;
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize, bytesAvailable1, bufferSize1, bytesRead1;
byte[] buffer;
byte[] buffer1;
int maxBufferSize = 1 * 1024 * 1024;
File sourceFile = new File(sourceFileUri);
if (!sourceFile.isFile()) {
dialog.dismiss();
runOnUiThread(new Runnable() {
public void run() {
/// messageText.setText("Source File not exist :"+ imagepath);
}
});
return 0;
} else {
try {
FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL(URLDATA);
conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true); // Allow Inputs
conn.setDoOutput(true); // Allow Outputs
conn.setUseCaches(false); // Don't use a Cached Copy
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("ENCTYPE", "multipart/form-data");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
conn.setRequestProperty("uploaded_file", fileName);
conn.setRequestProperty("uname", uname);
conn.setRequestProperty("email", email);
conn.setRequestProperty("address", addressdata);
conn.setRequestProperty("tro_milk", tropiw);
conn.setRequestProperty("uploaded_file", fileName);
conn.setRequestProperty("c1", c1);
conn.setRequestProperty("c2", c2);
conn.setRequestProperty("c3", c3);
conn.setRequestProperty("img_milk_spec", img11);
conn.setRequestProperty("plumeria", palumaria);
conn.setRequestProperty("img_pulmeria", img22);
conn.setRequestProperty("terms", terms);
conn.setRequestProperty("lat", String.valueOf(lat));
conn.setRequestProperty("log1", String.valueOf(log1));
conn.setRequestProperty("l3", String.valueOf(l3));
conn.setRequestProperty("l4", String.valueOf(l4));
conn.setRequestProperty("l5", String.valueOf(l5));
conn.setRequestProperty("l6", String.valueOf(l6));
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""
+ fileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
// create a buffer of maximum size
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
serverResponseCode = conn.getResponseCode();
String serverResponseMessage = conn.getResponseMessage();
Log.i("uploadFile", "HTTP Response is : "
+ serverResponseMessage + ": " + serverResponseCode);
if (serverResponseCode == 200) {
runOnUiThread(new Runnable() {
public void run() {
String msg = "File Upload Completed.\n\n See uploaded file here : \n\n"
+ " F:/wamp/wamp/www/uploads";
Toast.makeText(PublicSurvay.this, "File Upload Complete.", Toast.LENGTH_SHORT).show();
}
});
}
//close the streams //
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
dialog.dismiss();
ex.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(PublicSurvay.this, "MalformedURLException", Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
} catch (Exception e) {
dialog.dismiss();
e.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(PublicSurvay.this, "Got Exception : see logcat ", Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file to server Exception", "Exception : " + e.getMessage(), e);
}
dialog.dismiss();
} // End else block
} catch (Exception e) {
Toast.makeText(this, "Image Upload Missing", Toast.LENGTH_SHORT).show();
}
return serverResponseCode;
}
public int uploadFile1(String uname, String email, String addressdata, String tropiw, String c1, String c2, String c3, String palumaria, String terms, double lat, double log1, double l3, double l4, double l5, double l6) {
try {
HttpURLConnection conn = null;
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize, bytesAvailable1, bufferSize1, bytesRead1;
byte[] buffer;
byte[] buffer1;
int maxBufferSize = 1 * 1024 * 1024;
try {
// FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL(URLDATA);
conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true); // Allow Inputs
conn.setDoOutput(true); // Allow Outputs
conn.setUseCaches(false); // Don't use a Cached Copy
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("ENCTYPE", "multipart/form-data");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
conn.setRequestProperty("uname", uname);
conn.setRequestProperty("email", email);
conn.setRequestProperty("address", addressdata);
conn.setRequestProperty("tro_milk", tropiw);
conn.setRequestProperty("c1", c1);
conn.setRequestProperty("c2", c2);
conn.setRequestProperty("c3", c3);
conn.setRequestProperty("plumeria", palumaria);
conn.setRequestProperty("terms", terms);
conn.setRequestProperty("l3", String.valueOf(l3));
conn.setRequestProperty("l4", String.valueOf(l4));
conn.setRequestProperty("l5", String.valueOf(l5));
conn.setRequestProperty("l6", String.valueOf(l6));
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
serverResponseCode = conn.getResponseCode();
String serverResponseMessage = conn.getResponseMessage();
} catch (MalformedURLException ex) {
dialog.dismiss();
ex.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(PublicSurvay.this, "MalformedURLException", Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
} catch (Exception e) {
dialog.dismiss();
e.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
// messageText.setText("Got Exception : see logcat ");
Toast.makeText(PublicSurvay.this, "Got Exception : see logcat ", Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file to server Exception", "Exception : " + e.getMessage(), e);
}
dialog.dismiss();
} catch (Exception e) {
}
return serverResponseCode;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 100 && resultCode == RESULT_OK && data != null) {
Uri pickedImage = data.getData();
String[] filePath = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(pickedImage, filePath, null, null, null);
cursor.moveToFirst();
img1 = cursor.getString(cursor.getColumnIndex(filePath[0]));
ExifInterface exif = null;
try {
exif = new ExifInterface(img1);
String lat = ExifInterface.TAG_GPS_LATITUDE;
String lat_data = exif.getAttribute(lat);
String log = ExifInterface.TAG_GPS_LONGITUDE;
String log_data = exif.getAttribute(log);
cursor.close();
l1 = CountData(lat_data);
l2 = CountLongitude(log_data);
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
cursor.close();
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
e.printStackTrace();
}
cursor.close();
}
if (requestCode == 200 && resultCode == RESULT_OK && data != null) {
Uri pickedImage = data.getData();
String[] filePath = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(pickedImage, filePath, null, null, null);
cursor.moveToFirst();
img2 = cursor.getString(cursor.getColumnIndex(filePath[0]));
ExifInterface exif = null;
try {
exif = new ExifInterface(img2);
String lat = ExifInterface.TAG_GPS_LATITUDE;
String lat_data = exif.getAttribute(lat);
String log = ExifInterface.TAG_GPS_LONGITUDE;
String log_data = exif.getAttribute(log);
cursor.close();
l3 = CountData(lat_data);
l4 = CountLongitude(log_data);
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
cursor.close();
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
e.printStackTrace();
}
cursor.close();
}
if (requestCode == 300 && resultCode == RESULT_OK && data != null) {
Uri pickedImage = data.getData();
String[] filePath = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(pickedImage, filePath, null, null, null);
cursor.moveToFirst();
img3 = cursor.getString(cursor.getColumnIndex(filePath[0]));
ExifInterface exif = null;
try {
exif = new ExifInterface(img3);
String lat = ExifInterface.TAG_GPS_LATITUDE;
String lat_data = exif.getAttribute(lat);
String log = ExifInterface.TAG_GPS_LONGITUDE;
String log_data = exif.getAttribute(log);
cursor.close();
l5 = CountData(lat_data);
l6 = CountLongitude(log_data);
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
cursor.close();
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
e.printStackTrace();
}
cursor.close();
}
if (requestCode == 101 && resultCode == RESULT_OK && data != null) {
String[] projection = {MediaStore.Images.Media.DATA};
Cursor cursor = managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
projection, null, null, null);
int column_index_data = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToLast();
img1 = cursor.getString(column_index_data);
ExifInterface exif = null;
try {
exif = new ExifInterface(img1);
String lat = ExifInterface.TAG_GPS_LATITUDE;
String lat_data = exif.getAttribute(lat);
String log = ExifInterface.TAG_GPS_LONGITUDE;
String log_data = exif.getAttribute(log);
cursor.close();
l1 = CountData(lat_data);
l2 = CountLongitude(log_data);
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
cursor.close();
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
e.printStackTrace();
}
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
}
if (requestCode == 102 && resultCode == RESULT_OK && data != null) {
String[] projection = {MediaStore.Images.Media.DATA};
Cursor cursor = managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
projection, null, null, null);
int column_index_data = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToLast();
img2 = cursor.getString(column_index_data);
ExifInterface exif = null;
try {
exif = new ExifInterface(img2);
String lat = ExifInterface.TAG_GPS_LATITUDE;
String lat_data = exif.getAttribute(lat);
String log = ExifInterface.TAG_GPS_LONGITUDE;
String log_data = exif.getAttribute(log);
cursor.close();
l3 = CountData(lat_data);
l4 = CountLongitude(log_data);
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
cursor.close();
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
e.printStackTrace();
}
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
}
if (requestCode == 103 && resultCode == RESULT_OK && data != null) {
String[] projection = {MediaStore.Images.Media.DATA};
Cursor cursor = managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
projection, null, null, null);
int column_index_data = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToLast();
img3 = cursor.getString(column_index_data);
ExifInterface exif = null;
try {
exif = new ExifInterface(img3);
String lat = ExifInterface.TAG_GPS_LATITUDE;
String lat_data = exif.getAttribute(lat);
String log = ExifInterface.TAG_GPS_LONGITUDE;
String log_data = exif.getAttribute(log);
cursor.close();
l5 = CountData(lat_data);
l6 = CountLongitude(log_data);
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
cursor.close();
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
e.printStackTrace();
}
Toast.makeText(this, "Image Uploaded", Toast.LENGTH_SHORT).show();
}
}
public double CountData(String str) {
String[] strArray = str.split(",");
String str1 = strArray[0];
String[] s1 = str1.split("/");
String a1 = s1[0];
String a2 = s1[1];
int a11 = Integer.parseInt(a1);
int a22 = Integer.parseInt(a2);
System.out.println(a11 + "" + a22);
}
你在調用'CountData（）'在某處有一個空參數。您需要進行調試以確定地點和原因。你還應該考慮如何創建[mcve]。當然不是所有的代碼都會導致你的問題。 –
看起來這個消息很明顯：你試圖在一個空字符串對象上分割，一些方法。由於代碼示例中沒有行號，因此出現的唯一一個str.split（）調用在函數CountData中。你將不得不添加一些調試，看看你如何獲得空字符串。 –