Ok your program fails at this point: while ((line = reader.readLine()) != null) { String[] RowData = line.split(“,”); DataStates cur = new DataStates(); cur.setTitle(RowData[2]); cur.setPrice(RowData[3]); // now there is a ArrayIndexOutOfBoundsException cur.setDescription(RowData[4]); this.add(cur); } Index begins at 0 so I think the right code would be while ((line = reader.readLine()) != null) { String[] RowData … Read more
You need to add Snackbar dependency to your app gradle file. implementation ‘com.android.support:design:27.1.1’ Then click Sync Now 6 solved Cannot resolve symbol in android studio from import
Intent i=new Intent(getApplicationContext(), FbsampleActivity.class) In your case, “this” refers to the DialogInterface class. You need the context of your Activity. 0 solved How to call another activity(class) from one activity? [closed]
You must pass the value belongsId: db.delete(TABLE_NAME, “BELONGS = ‘” + belongsId + “‘”, null); 5 solved how I can delete multiple rows with same id like in android sqlite
Use a List (e.g. ArrayList) instead. And before passing it to the Graph API convert it back to Numbers[] array with toArray(). There’s also an example how to loop over the list in the toArray link. solved Add and retrieve elements with Numbers array in Java
You need to initialize your button, you are calling OnClickListener on null reference LoginButton =(Button)findViewById(R.id.button_login); Before calling LoginButton.setOnClickListener() initilize your login button. 6 solved Null object reference error when trying to open new activity on Android? [duplicate]
As per your design you need scrollview for 2 above components and your BottomNavigationView is fix (not movable). In your code you are not using scrollview first and second i’m not sure why you’re using framelayout! Here’s my code which is exactly as per your given design try this if any concern you can ask! … Read more
Let me get this straight. You want someone to use your app, type in a EditText, and when they click a button, it takes them to a browser and searches for the words they typed in? XML <TextView android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:text=”Hello World!” android:textSize=”50dp” android:id=”@+id/textView” app:layout_constraintBottom_toBottomOf=”parent” app:layout_constraintLeft_toLeftOf=”parent” app:layout_constraintRight_toRightOf=”parent” app:layout_constraintTop_toTopOf=”parent” /> Java public class MainActivity extends AppCompatActivity … Read more
Without any code no one would be able to help you. But still I am gonna give you some idea on how you can do that. As soon as you get some new record just append the text in TextView: For first time : textView.setText(“record 1”); after that after getting each record: textView.append(textView.getText() + “\n” … Read more
No, you don’t need that many activities. You need to write abstract activities that take parameters and displays different data based on those. At most I see 4 activities here- department selector, semester selector, subject selector, and the actual subject activity. And arguably some of those should be fragments instead, although that’s more personal choice. … Read more
You forgot to initialize myDb. Initialize it in your onCreate() method: myDb = new DatabaseHelper(this); 5 solved Android: Passing values to another activity’s function and then to Sqlite database [duplicate]
You can’t parse a String which represents a Double with Integer.parseInt(). This will not work: Integer.parseInt(“3.0”); This will work: Integer.parseInt(“3”); Use this instead: new Double(“3.0”).intValue() But consider following behavior: new Double(“2.5”).intValue() will return 2. 2 solved Extracting a char from a string
You can get value by using this and later on you can bind with your componant Context context = getActivity(); SharedPreferences sharedPref = context.getSharedPreferences( getString(R.string.preference_file_key), Context.MODE_PRIVATE); 0 solved How to add values from sharedpreferences to cardview in android?
maybe setTag(id) with id of hobby and inside OnClickListener obtain this tag by (int) v.getTag() 1 solved Dynamically create TextView with listeners
proDialog = new ProgressDialog(getApplicationContext()); why getApplicationContext() because You’re trying to show a Dialog after you’ve exited an Activity. see full reason at Activity has leaked window that was originally added 1 solved Using progressDialog gives window leak error and doesn’t dismiss in Android