Android上的新功能并遵循本教程：
https://www.simplifiedcoding.net/android-upload-image-using-php-mysql-android-studio/#comment-12178
我能够将从图库和其他一些编辑文本中选择的图片（如姓名，地址等）发送到数据库中。我添加了一些代码，使其也可以使用打开相机的按钮，我可以拍照并保存，但是当我尝试将此信息发送到数据库时，应用程序崩溃了。
我希望有人可以帮助我，我一直在讨价还价。
private Bitmap bitmap;
private Uri filePath;
private void showFileChooser() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Elige una imagen"), PICK_IMAGE_REQUEST);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == CAM_REQUEST && resultCode == Activity.RESULT_OK ){
Toast.makeText(TerminosYC.this.getActivity(), "si hay foto", Toast.LENGTH_LONG).show();
try {
bitmap = MediaStore.Images.Media.getBitmap(getActivity().getContentResolver(), (filePath));
} catch (IOException e) {
e.printStackTrace();
}
}else if (requestCode == PICK_IMAGE_REQUEST && resultCode == Activity.RESULT_OK ) {
filePath = data.getData();
try {
bitmap = MediaStore.Images.Media.getBitmap(getActivity().getContentResolver(), filePath);
imageView.setImageBitmap(bitmap);
areaLeyendaImagen.setVisibility(View.VISIBLE);
areaFotoCargada.setVisibility(View.VISIBLE);
imagencargada.setVisibility(View.VISIBLE);
textoimagencargada.setVisibility(View.VISIBLE);
area_cerrarIagen.setVisibility(View.VISIBLE);
cerrarImagen.setVisibility(View.VISIBLE);
buttonChoose.setError(null);
} catch (IOException e) {
e.printStackTrace();
}
}
}
public String getPath(Uri uri) {
Cursor cursor = getActivity().getContentResolver().query(uri, null, null, null, null);
cursor.moveToFirst();
String document_id = cursor.getString(0);
document_id = document_id.substring(document_id.lastIndexOf(":") + 1);
cursor.close();
cursor = getActivity().getContentResolver().query(
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
null, MediaStore.Images.Media._ID + " = ? ", new String[]{document_id}, null);
cursor.moveToFirst();
String path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));
cursor.close();
return path;
}
public class CargarDatos extends AsyncTask<String, Void, String> {
protected String doInBackground(String... urls) {
////////////////-------------
String correo = campo_correo.getText().toString().trim();
String nombre = campo_nombre.getText().toString().trim();
String apellido= campo_apellido.getText().toString().trim();
String telefono= campo_telefono.getText().toString().trim();
String categoria= customspinner.getSelectedItem().toString().trim();
String titulo = campo_titulo.getText().toString().trim();
String descripcion = campo_descripcion.getText().toString().trim();
String latitud = Double.toString(latitudeeeee);
String longitud = Double.toString(longitudeeee);
String s = (campo_publico.isChecked() ? "1" : "0");
String r = (campo_terminos.isChecked() ? "1" : "0");
//getting the actual path of the image
String path = getPath(filePath);
//Uploading code
try {
String uploadId = UUID.randomUUID().toString();
//Creating a multi part request
new MultipartUploadRequest(TerminosYC.this.getActivity(), uploadId, Constants.UPLOAD_URL)
.addFileToUpload(path, "image") //Adding file
.addParameter("name",correo) //Adding text parameter to the request
.addParameter("nombre",nombre)
.addParameter("apellido",apellido)
.addParameter("telefono", telefono)
.addParameter("categoria", categoria)
.addParameter("titulo", titulo)
.addParameter("descripcion", descripcion)
.addParameter("publico", s)
.addParameter("terminos", r)
.addParameter("latitud",latitud)
.addParameter("longitud",longitud)
.setNotificationConfig(new UploadNotificationConfig())
.setMaxRetries(2)
.startUpload(); //Starting the upload
} catch (Exception exc) {
Toast.makeText(TerminosYC.this.getActivity(), exc.getMessage(), Toast.LENGTH_SHORT).show();
}
// params comes from the execute() call: params[0] is the url.
try {
return downloadUrl(urls[0]);
} catch (IOException e) {
return "Unable to retrieve web page. URL may be invalid.";
}
}
class btnTakePhotoClicker implements Button.OnClickListener{
@Override
public void onClick(View view) {
//////////////////////////////
//Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
filePath = Uri.fromFile(getOutputMediaFile());
intent.putExtra(MediaStore.EXTRA_OUTPUT, filePath);
startActivityForResult(intent, CAM_REQUEST);
}
}
我得到以下错误：
08-16 12:58:48.770 7403-7403/com.example.lupitagarcia.yosoyvallarta E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.lupitagarcia.yosoyvallarta, PID: 7403
java.lang.NullPointerException: Attempt to invoke interface method 'boolean android.database.Cursor.moveToFirst()' on a null object reference
at com.example.lupitagarcia.yosoyvallarta.TerminosYC.getPath(TerminosYC.java:553)
at com.example.lupitagarcia.yosoyvallarta.TerminosYC$1.onClick(TerminosYC.java:352)
at android.view.View.performClick(View.java:5721)
at android.widget.TextView.performClick(TextView.java:10936)
at android.view.View$PerformClick.run(View.java:22620)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:7406)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
更新： 我已经意识到当使用应用程序上的相机拍摄照片时，这不会在画廊中显示，我需要重新启动手机才能看到创建的文件夹上的图片。我不知道这是否可以解决我的问题。