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Dies ist mein vollständiger Code unten. Ich kodiere eine Android-App, die Bilder aus der Galerie oder wo auch immer auswählen kann und sie auf den Mysql-Server über PHP hochladen, aber wenn das Bild nicht ausgewählt ist und die Upload-Taste gedrückt wird, stürzt die Anwendung ab, damit ich die Funktion implementieren kann. Warnungsdialog, wenn das Bild nicht aus der Galerie ausgewählt wurde, hat es bereits in EditText implementiert, kann es aber nicht in Image implementieren. unten ist mein CodeFehleranzeige anzeigen, wenn das Bild nicht ausgewählt wurde android
package com.app.markeet;
public class ActivityPost extends AppCompatActivity implements View.OnClickListener {
private Button buttonUpload;
private Button buttonChoose;
EditText editTitle, editTextPrice, editTextDescription, editTextStatus, editTextAuthorsname, editTextAuthorsphone;
private ImageView imageView,choiceItemImg,choiceItemImg2,choiceItemImg3,choiceItemImg4;
public static final String KEY_TITLE = "name";
public static final String KEY_IMAGE = "image";
public static final String KEY_PRICE = "price";
public static final String KEY_DESCRIPTION = "description";
public static final String KEY_STOCK = "stock";
public static final String KEY_AUTHORSNAME = "authorsname";
public static final String KEY_AUTHORSPHONE = "authorsphone";
public static final String KEY_STATUS = "status";
public static final String UPLOAD_URL = "http://192.168.0.199/config/upload.php";
private int PICK_IMAGE_REQUEST = 1;
public static final int CREATE_POST_IMG = 5;
private Bitmap bitmap;
private Uri outputFileUri;
public static final int SELECT_POST_IMG = 3;
public static final String APP_TEMP_FOLDER = "kobobay";
String[] categories = { "Animals and Pets", "Electronics and Video",
"Fashion and Beauty", "Home, Furniture and Garden", "Mobile Phone and Tablets", "PC, Laptop and Accessories",
"Jobs and Services", "Real Estate and Roommate", "Hobbles, Art and Sport", "Books and Tutorial",
"Vehicles", "Other"};
int[] catevalue = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12};
Spinner spinner1;
TextView textView1;
private Toolbar toolbar;
private ActionBar actionBar;
private String selectedPostImg = "";
ImageView mChoiceItemImg, mLocationDelete;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_post);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
actionBar = getSupportActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeButtonEnabled(true);
actionBar.setTitle("");
buttonUpload = (Button) findViewById(R.id.buttonUpload);
buttonChoose = (Button) findViewById(R.id.buttonChooseImage);
editTitle = (EditText)findViewById(R.id.editTitle);
editTextPrice = (EditText)findViewById(R.id.editPrice);
editTextDescription = (EditText)findViewById(R.id.editDescription);
editTextStatus = (EditText)findViewById(R.id.editStatus);
editTextAuthorsname = (EditText)findViewById(R.id.editName);
editTextAuthorsphone = (EditText)findViewById(R.id.editPhone);
imageView = (ImageView) findViewById(R.id.imageView);
textView1 = (TextView)findViewById(R.id.text1);
spinner1 = (Spinner)findViewById(R.id.spinner1);
ArrayAdapter<String> adapter1 =
new ArrayAdapter<String>(ActivityPost.this,
android.R.layout.simple_spinner_item, categories);
adapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner1.setAdapter(adapter1);
spinner1.setOnItemSelectedListener(onItemSelectedListener1);
buttonChoose.setOnClickListener(this);
buttonUpload.setOnClickListener(this);
choiceItemImg = (ImageView) findViewById(R.id.choiceItemImg);
choiceItemImg.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showFileChooser();
}
});
mChoiceItemImg = (ImageView) findViewById(R.id.choiceItemImg2);
mChoiceItemImg.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (selectedPostImg.length() == 0) {
imageFromGallery();
} else {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(ActivityPost.this);
alertDialog.setTitle(getText(R.string.action_remove));
alertDialog.setMessage(getText(R.string.label_delete_img));
alertDialog.setCancelable(true);
alertDialog.setNeutralButton(getText(R.string.action_cancel), new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alertDialog.setPositiveButton(getText(R.string.action_remove), new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
mChoiceItemImg.setImageResource(R.drawable.ic_camera);
selectedPostImg = "";
dialog.cancel();
}
});
alertDialog.show();
}
}
});
String URL = Constant.WEB_URL + "get/user_info.php";
StringRequest stringRequest = new StringRequest(Request.Method.POST, URL,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONObject jsonResponse= new JSONObject(response);
//txtName.setText(jsonResponse.getString("fullname"));
editTextAuthorsname.setText(jsonResponse.getString("login"));
//txtEmail.setText(jsonResponse.getString("email"));
editTextAuthorsphone.setText(jsonResponse.getString("phone"));// you need to create this textView txtPoints.
} catch (Throwable t) {
Log.e("onResponse", "The response: " + response + " seems to not be json formatted.");
}
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(ActivityPost.this,error.toString(), Toast.LENGTH_SHORT).show();
}
}){
@Override
protected Map<String,String> getParams(){
Map<String,String> params = new HashMap<String, String>();
params.put("username",ThisApplication.getInstance().getUsername());
return params;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(stringRequest);
}
AdapterView.OnItemSelectedListener onItemSelectedListener1 =
new AdapterView.OnItemSelectedListener(){
@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
String s1 = String.valueOf(catevalue[position]);
textView1.setText(s1);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {}
};
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);
}
public void imageFromGallery() {
Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(Intent.createChooser(intent, getText(R.string.label_select_img)), SELECT_POST_IMG);
}
public void imageFromCamera() {
try {
File root = new File(Environment.getExternalStorageDirectory(), APP_TEMP_FOLDER);
if (!root.exists()) {
root.mkdirs();
}
File sdImageMainDirectory = new File(root, "post.jpg");
outputFileUri = Uri.fromFile(sdImageMainDirectory);
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
startActivityForResult(cameraIntent, CREATE_POST_IMG);
} catch (Exception e) {
Toast.makeText(ActivityPost.this, "Error occured. Please try again later.", Toast.LENGTH_SHORT).show();
}
}
@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) {
Uri filePath = data.getData();
try {
bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), filePath);
choiceItemImg.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
}
if (requestCode == SELECT_POST_IMG && resultCode == RESULT_OK && data != null && data.getData() != null) {
Uri filePath = data.getData();
try {
bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), filePath);
choiceItemImg2.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
}
}
public String getStringImage(Bitmap bmp){
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] imageBytes = baos.toByteArray();
String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT);
return encodedImage;
}
public void uploadImage(){
final String GetAuthorsname = editTextAuthorsname.getText().toString();
final String GetAuthorsphone = editTextAuthorsphone.getText().toString();
final String GetTitle = editTitle.getText().toString().trim();
final String image = getStringImage(bitmap);
final String GetPrice = editTextPrice.getText().toString();
final String GetStock = textView1.getText().toString();
final String GetDescription = editTextDescription.getText().toString();
final String GetStatus = editTextStatus.getText().toString();
class UploadImage extends AsyncTask<Void,Void,String> {
ProgressDialog loading;
@Override
protected void onPreExecute() {
super.onPreExecute();
loading = ProgressDialog.show(ActivityPost.this,"Please wait...","uploading",false,false);
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
loading.dismiss();
Toast.makeText(ActivityPost.this,s, Toast.LENGTH_LONG).show();
}
@Override
protected String doInBackground(Void... params) {
RequestHandler rh = new RequestHandler();
HashMap<String,String> param = new HashMap<String,String>();
param.put(KEY_TITLE,GetTitle);
param.put(KEY_IMAGE,image);
param.put(KEY_PRICE,GetPrice);
param.put(KEY_STOCK,GetStock);
param.put(KEY_DESCRIPTION,GetDescription);
param.put(KEY_STATUS,GetStatus);
param.put(KEY_AUTHORSNAME,GetAuthorsname);
param.put(KEY_AUTHORSPHONE,GetAuthorsphone);
String result = rh.sendPostRequest(UPLOAD_URL, param);
return result;
}
}
UploadImage u = new UploadImage();
u.execute();
}
public Boolean checkPicture() {
String image = getStringImage(bitmap);
String GetPrice = editTextPrice.getText().toString();
String GetDescription = editTextDescription.getText().toString();
String GetStatus = editTextStatus.getText().toString();
editTitle.setError(null);
editTextPrice.setError(null);
editTextDescription.setError(null);
editTextStatus.setError(null);
if (image.length() == 0) {
editTitle.setError(getString(R.string.error_field_empty));
return false;
} if (GetPrice.length() == 0) {
editTextPrice.setError(getString(R.string.error_field_empty));
return false;
} if (GetDescription.length() == 0) {
editTextDescription.setError(getString(R.string.error_field_empty));
return false;
} if (GetStatus.length() == 0) {
editTextStatus.setError(getString(R.string.error_field_empty));
return false;
}
return true;
}
public Boolean checkDesc() {
String GetDescription = editTextDescription.getText().toString();
editTextDescription.setError(null);
if (GetDescription.length() == 0) {
editTextDescription.setError(getString(R.string.error_field_empty));
return false;
}
return true;
}
public Boolean checkProductName() {
String GetTitle = editTitle.getText().toString();
editTitle.setError(null);
if (GetTitle.length() == 0) {
editTitle.setError(getString(R.string.error_field_empty));
return false;
}
return true;
}
public Boolean checkCategory() {
String GetStock = textView1.getText().toString();
textView1.setError(null);
if (GetStock.length() == 0) {
editTitle.setError(getString(R.string.error_field_empty));
return false;
}
return true;
}
@Override
public void onClick(View v) {
if(v == buttonChoose){
showFileChooser();
//imageFromGallery();
}
if(v == buttonUpload){
// checkUsername();
if (!ThisApplication.getInstance().isConnected()) {
Toast.makeText(getApplicationContext(), R.string.msg_network_error, Toast.LENGTH_SHORT).show();
} else if (!checkProductName() || !checkDesc() || !checkCategory()) {
} else {
uploadImage();
}
}
}
@Override
public void onBackPressed(){
finish();
}
@Override
public void onDestroy() {
super.onDestroy();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_new_item, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.sync:
Intent intent = getIntent();
finish();
startActivity(intent);
return true;
case R.id.action_post:
uploadImage();
default:
return super.onOptionsItemSelected(item);
}
}
}
hallo jemand mit meiner Frage kann mir helfen, fügen –
das Problem hier ist diese Linie für Bild String upload ist = getStringImage (Bitmap); und dies ist für Text final String GetTitle = editTitle.getText(). toString(). trim(); also wie kann ich das bild funktionieren lassen? –