I have a plain action bar menu like this:
This is what it looks like in Java:
getActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
ActionBar.OnNavigationListener navigationListener = new OnNavigationListener() {
#Override
public boolean onNavigationItemSelected(int itemPosition, long itemId) {
//when an item is selected (i.e local/My Places/etc)
return false;
}
};
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getBaseContext(), android.R.layout.simple_spinner_dropdown_item, new String[] { "Local", "My Places", "Checkins", "Latitude" });
getActionBar().setListNavigationCallbacks(adapter, navigationListener);
The callback for when an item is selected works fine, but I want a callback for when the dropdown is opened/closed.
I've looked at ActionBar.OnMenuVisibilityListener but the following prints nothing in my console.
ActionBar.OnMenuVisibilityListener listener = new ActionBar.OnMenuVisibilityListener() {
#Override
public void onMenuVisibilityChanged(boolean isVisible) {
System.out.println("hello world!");
};
};
getActionBar().addOnMenuVisibilityListener(listener);
What can I try next?
Recently I face the same task. And I use the same method to show Spinner.
But to solve this I have to replace this Spinner with custom one. I remove this code and put own Spinner through xml layout of my activity.
<com.company.yourapp.View.MenuSpinner
android:id="#+id/catalogue_menu_spinner"
android:layout_width="wrap_content"
android:layout_height="?attr/actionBarSize"
android:layout_alignParentLeft="true"
android:layout_below="#id/catalogue_status_bar"
android:background="#null"
android:layout_marginLeft="60dp" />
Class that notify me when menu is showed (MenuSpinner in code above) I get from this question.
I hope my answer will help someone who like me stuck on this.
Related
I have a simple button that looks like:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:tag="general"
android:id="#+id/root"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#343535"
android:orientation="vertical"
tools:context=".fragments.GeneralFragment">
<Button
android:id="#+id/hello"
android:layout_width="match_parent"
android:layout_height="60dp"
android:gravity="center_vertical"
android:onClick="onClick"
android:text="#string/hello" />
Instead of static, these buttons should now be dynamic
Button button = (Button) layout.getChildAt(0);
for(String text : readFromSharedPreferences) {
// Set the layout
Button btn = new Button(this.getContext());
btn.setTextAlignment(View.TEXT_ALIGNMENT_TEXT_START);
btn.setText(text);
btn.setTag(text);
btn.setLayoutParams(button.getLayoutParams());
btn.setBackground(button.getBackground());
layout.addView(btn);
The static button has an animation when I click on it. That looks like this:
But the dynamic button has no animation. So when I click on it, nothing happens. That looks like this:
How can I add this animation to my dynamic buttons?
Update
I have figured out that my loop contains an on-touch listener. That looks like this:
btn.setOnTouchListener(new OnSwipeTouchListener(getContext()) {
// No code in here
});
If I remove that listener (even if it contains no code), the animation works great but I would like to keep it, because of my swipe function that is placed into it.
That is my whole code:
// Swiping to link
btn.setOnTouchListener(new OnSwipeTouchListener(getContext()) {
#Override
public void onSwipeLeft() {
super.onSwipeLeft();
// Alert to ask
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
builder.setTitle("Delete");
builder.setMessage("Do you want to delete?");
// Delete
builder.setPositiveButton("Yes", (dialog, which) -> {
// Set the SharedPreferences as String
ArrayList<String> currentSharedPreferences = readFromSharedPreferences(getContext());
currentSharedPreferences.remove(btn.getTag().toString());
Gson gson = new Gson();
String currentSharedPreferencesAsText = gson.toJson(currentSharedPreferences);
// Update the SharedPreference k-text
SharedPreferences mPrefs = getContext().getSharedPreferences("k-texts", Context.MODE_PRIVATE);
SharedPreferences.Editor prefsEditor = mPrefs.edit();
prefsEditor.putString("k-text", currentSharedPreferencesAsText);
prefsEditor.apply();
// Start the animation
btn.animate()
.translationX(-btn.getWidth())
.alpha(0.0f)
.setDuration(300)
.setListener(new AnimatorListenerAdapter() {
#Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
btn.clearAnimation();
btn.setVisibility(View.GONE);
Snackbar.make(view, "Entry deleted.", Snackbar.LENGTH_LONG).setAction("Delete", null).show();
}
});
});
// Cancel
builder.setNegativeButton("No", (dialog, which) -> {
// Silence is golden
});
builder.show();
}
#Override
public void onClick() {
MainActivity mainActivity = new MainActivity();
Tts tts = new Tts(getContext(), _mediaPlayer, mainActivity.barTop, mainActivity.barBottom);
try {
tts.say(btn.getTag().toString());
} catch (Exception e) {
e.printStackTrace();
}
}
});
Well I could use
#Override
public boolean onTouch(View view, MotionEvent motionEvent) {
return false;
}
Then the animation will work but onClick() wouldn't work anymore.
Another update
I had a similar problem on another view. There my static button was not having a click effect. Then I have just simply added android:foreground="?attr/selectableItemBackground" and it worked! The same way I have just tried with my dynamic button. So I have added btn.setForeground(button.getForeground()); but that doesn't do anything.
Use MaterialButton instead of Button. MaterialButton is a subtype of Button that supports additional features. The Button that is in your XML layout is actually a MaterialButton if you're using a Material Components theme. The theme automatically swaps out Buttons for MaterialButtons when your XML is inflated. So, when dynamically creating buttons in your Java code, you must use MaterialButton if you want it to match the original.
Also, when using MaterialButton, never call setBackground() because this causes undefined behavior. It likely will prevent the ripple effect from occurring as well.
Alternatively, you can define your Button in its own XML file, even with the layout params it needs for LinearLayout. Then inflate the XML each time you need another button.
for(String text : readFromSharedPreferences) {
Button btn = requireContext().getLayoutInflater()
.inflate(R.layout.my_button, layout, true); // true adds it to layout
btn.setText(text);
btn.setTag(text);
}
I'm new to Android developing and now I'm trying to simulate click on my AutoCompleteTextView object.
I'm expecting default android's keyboard appearance with the possibility to type something at the element
Here is a simple function, where I'm trying to perform it:
private void someTestMethodName() {
AutoCompleteTextView tagSearchInput = findViewById(R.id.autoCompleteTextView);
tagSearchInput.performClick();
}
And here is .xml element defining:
<AutoCompleteTextView
android:id="#+id/autoCompleteTextView"
android:text="TextView"
android:layout_width="188dp"
android:layout_height="62dp"
android:layout_alignParentStart="true"
android:layout_marginStart="108dp"
android:layout_alignParentTop="true"
android:layout_marginTop="292dp"/>
Calling performClick on a TextView does not pop up the soft keyboard, but you can quite easily do that yourself:
private void someTestMethodName() {
AutoCompleteTextView tagSearchInput = findViewById(R.id.autoCompleteTextView);
showSoftKeyboard(tagSearchInput);
}
public void showSoftKeyboard(View view){
if(view.requestFocus()){
InputMethodManager imm =(InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(view,InputMethodManager.SHOW_IMPLICIT);
}
}
More information can be found here: https://github.com/codepath/android_guides/wiki/Working-with-the-Soft-Keyboard
i never used performClick, you cant use setOnClickListener to catch a click
tagSearchInput.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//do somthing
}
});
I have a textview where I load the 0 value by using textView.setText(nameofstory.next());
But when I go into the application and use the buttons to move left and right on the list I need to press it twice to get to the next/previous value
Any help please?
private List<String> nameofstory
nameofstorylist = new ArrayList<String>();
nameofstory.add("test");
nameofstory.add("tests");
nameofstory.add("test1s");
nameofstory.add("test2s");
ListIterator<String> nameofstory = nameofstorylist.listIterator();
textView.setText(nameofstorylist.get(0));
public void NextButton(View view) {
if (nameofstory.hasNext()){
textView.setText(nameofstory.next());
}
}
public void BackButton(View view) {
if (nameofstory.hasPrevious()){
textView.setText(nameofstory.previous());
}
}
android:focusable="true"
android:focusableInTouchMode="true"
and make sure that you are not using onClick on your layout xml.
I was interested in making an APP for Android with 30 personality profile questions, where each question will have two alternatives of choice. I thought about using RadioButton, but since there are 30 questions I would not like to include them all on the screen at once, I would like to display only one question with two alternatives and each selection of one of the alternatives already called the other question.
Is it possible to do this without creating 30 activities?
I saw that it might be possible to do array, but I do not know how to run it from one issue to another.
Thank you so much!!!
This code achieves the required functionality. It is very basic and can be improved as per your need. Simply add this activity and layout to your project.
Java File: This code uses a single layout and recreate the view for next question on Radio Button Click
public class QuestionsActivity extends AppCompatActivity implements
RadioGroup.OnCheckedChangeListener{
LinkedHashMap<String,RadioGroup> questionList;
LinkedHashMap<String,String> answerList;
ArrayList<String> keys=new ArrayList<>();
int keyCounter=0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_questions);
questionList=new LinkedHashMap<>(); //This Map contains all the questions with two radio button (options)
answerList=new LinkedHashMap<>(); //This Map will contain question along with selected answer.
initQuestions(); //This method will add 30 questions with options
keys.addAll(questionList.keySet());
showQuestions(keys.get(keyCounter));//This method will show the first question
}
private void showQuestions(String key) {
TextView textView=(TextView)findViewById(R.id.tv_question);
textView.setText(key);
LinearLayout layout =(LinearLayout)findViewById(R.id.questionsLayout);
layout.removeAllViews();
RadioGroup rg=questionList.get(key);
rg.setOrientation(LinearLayout.HORIZONTAL);
layout.addView(rg);
rg.setOnCheckedChangeListener(this);
}
private void initQuestions() {
for (int i = 1; i <=3; i++) {
RadioGroup rg=new RadioGroup(this);
RadioButton rb1 =new RadioButton(this);
rb1.setText("Q "+i+" RadioButton 1");
RadioButton rb2 =new RadioButton(this);
rb2.setText("Q "+i+" RadioButton 2");
rg.addView(rb1);rg.addView(rb2);
questionList.put("Question "+i,rg);
}
}
#Override
public void onCheckedChanged(RadioGroup group, #IdRes int checkedId) {
RadioButton rb=(RadioButton) findViewById(group.getCheckedRadioButtonId());
if(keyCounter<questionList.size()) {
answerList.put(keys.get(keyCounter),rb.getText().toString()); // Putting the question and selected answer to 'answerList' map.
keyCounter++;
if(keyCounter<questionList.size()) {
showQuestions(keys.get(keyCounter));// showing the next question.
}
}else {
Toast.makeText(this, "You've answered all the questions.", Toast.LENGTH_SHORT).show();
}
for (String s : answerList.keySet()) {
System.out.println("Q--> "+s+", A--> "+answerList.get(s)); // Here you can see all the questions and selected answers on your logs(AndroidMonitor).
}
}
}
layout file : This file contains a textView which will be used to show question and a linear layout which contains the RadioGroup
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="edios.endlessscrollrecycler.QuestionsActivity">
<TextView
android:id="#+id/tv_question"
android:layout_marginTop="10dp"
android:padding="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<LinearLayout
android:orientation="horizontal"
android:id="#+id/questionsLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"></LinearLayout>
</LinearLayout>
Here is my problem. I setup the buttons exactly the way they are setup in the Android documentation, but I am getting a warning, and the button will not do anything.
Here is my Java code:
package com.variDice;
import android.app.Activity;
import android.os.Bundle;
import android.widget.*;
public class VariDiceActivity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//die1Clicked();
}
private void die1Clicked() {
ImageButton die1button = (ImageButton)findViewById(R.id.die1button);
die1button.setImageResource(R.drawable.icon);
}
}
...and the XML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:weightSum="1" android:layout_gravity="center_horizontal">
<ImageView
android:id="#+id/varidice_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:src="#drawable/icon"></ImageView>
<ImageButton
android:id="#+id/die1button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:background="#null"></ImageButton>
</LinearLayout>
...and the warning:
The method die1Clicked from the type VariDiceActivity is never used locally.
I must say that I am completely new to Android development. I made my app for the iPhone, and I am now trying to make a version for the android. The iPhone version was sooo much easier, because of the better interface builder (so I can just make an action and connect it to the button that way), so this is almost impossibly hard for me to understand. In other words, I do not understand how you connect an action to the button. Could somebody please tell me what I am doing wrong?
Try this in your xml:
<ImageButton
android:id="#+id/die1button"
android:onClick="die1Clicked"
...></ImageButton>
And in your code, change the method signature to:
public void die1Clicked(android.view.View v) {
ImageButton die1button = (ImageButton)findViewById(R.id.die1button);
die1button.setImageResource(R.drawable.icon);
}
Here is the Android Button tutorial.
To bind some behavior to an UI button, you need to register a listener that receives notifications of a certain event type. In your case, you register a OnClickListener (for the click event); just like in the following snippet:
// create the implementation of OnClickListener
private OnClickListener mDie1Listener = new OnClickListener() {
public void onClick(View v) {
// do something when the button is clicked
}
};
protected void onCreate(Bundle savedValues) {
...
// get the button from layout
Button button = (Button)findViewById(R.id.die1button);
// register the onClick listener with the implementation above
button.setOnClickListener(mDie1Listener);
...
}
You need to add a click listener to your button. Put this in your onCreate():
ImageButton die1button = (ImageButton)findViewById(R.id.die1button);
die1button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// What to do when the button is clicked
});
Most answers on SO tend to use 'setOnClickListener' instead of using xml properties.
I personally prefer using xml for making items clickable in android.
The mistake you have made is setting your function as private. The function which gets called after clicking the item should be public.
There are 3 things you should keep in mind:
Define the 2 properties in xml.
android:clickable="true"
android:onClick="functionName"
Define that function in the Activity file. Make sure to keep the function public.
public void functionName(View v) {
// TODO Auto-generated method stub
}
Make sure to pass 'View v' as an argument for that function.