android-edittext

问题 I am recently making my first Android App and it has a Edittext area which plans to only allow users to input correctly spelled words. Basically I have already learned how to use layout properties such as Android:inputType to detect any misspelled words. Any misspelled words should be marked with a red underline. But I cannot find a way to prevent users from inputting misspelled words. The ideal situation is: if a user has input any misspelled words and clicks the submit button, a prompt

问题 I have an EditText (vertically scrollable) inside one of the fragments in a ViewPager (horizontally swipable). By default, touch events inside the EditText can swipe the ViewPager but not scroll the EditText. By using the code below (which I don't really understand), touch events inside the EditText can scroll the EditText but not swipe the ViewPager: editText.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { v.getParent()

问题 This question already has answers here : How to programmatically re-apply a 9-patch image to an ImageView? (5 answers) Closed 6 years ago . firstly thank you for taking the time to read this. So I have created three 9-patch files which are working correctly as I can set them in XML on my registration form I've created and they look fine. The first two are set using an XML file depending on whether the EditText state_focused = 'true' or if state_focused='false'. That is working absolutely fine

问题 In my application I have search tab which display images with their name in grid view and now I want to implement search functionality. I have been searching in google for past two days but I didn't get any solution. Any idea or tutorial 0r how can I achieve this? Anyone help me with this. Thanks in advance. mainactivity import java.util.ArrayList; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import android.app.Activity; import android.app

问题 As I have mentioned in the Question I am trying to change the font of hint in EditText. But I can't seem to make it happen! this is my code for the the EditText getting the username: <!-- Email Label --> <android.support.design.widget.TextInputLayout android:layout_width="match_parent" android:id="@+id/input_username_id" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:layout_marginBottom="20dp"> <EditText android:id="@+id/input_username" android:layout_width="match

问题 I want to restric user from entering any special character or number into edit text, but programmatically it should allow. I know I can make inputType="text" but it deals only with the softkeyboard. I think it can be achived with TextWatcher, but I am not able to gel evrything. Can anyone help ? 回答1: editTextView.setInputType(InputType.TYPE_TEXT_VARIATION_NORMAL); There are many other types of inputs available for Password, Email address etc. Please see This API Link Thanks :) 回答2: You can

问题 I want the user to enter a temperature in Celsius and display the temperature in fahrenheit and vice versa. I think TextChangedListener would be perfect to convert without any button pressing. The values go on changing as the user types in. The biggest problem I'm having is that the EditText won't take any input. The moment I input anything, the app force closes. Please tell me what's wrong.Here's my code. public class MainActivity extends ActionBarActivity { EditText C, F; Button exit;

问题 My app is based on the fragments. When i go to the next fragment and return back, than I try to clear my field error message field.setError(null) in onStart() method, but this field have null reference on the error message ( field.getError() ) . But after onStart() method there appeared reference on the error message. When EditText takes reference on the error message ? 回答1: Fixed problem with the following method: name.post(new Runnable() { @Override public void run() { name.setError(null);

问题 Whatever I do, I couldn’t manage to make my EditText multilined inside TextInputLayout (had to add InputLayout for character counter). So when I enter something, it goes horizontally instead of going to a new line after a while. As you know very well, inside normal EditText s, multiline does the trick but not in this case. What do you think? Thank you. <?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

问题 How to trigger an action when user has paused typing for some time in EditText? 回答1: You can do this: final Handler mHandler = new Handler(); editText.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence s, int start, int before, int count) { } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void afterTextChanged(Editable s) { mHandler.removeCallbacksAndMessages(null); mHandler.postDelayed