Develop Reference

Custom Linear Layout Child not showing

i tried to create custom linear layout that have dynamic height and width = height. The custom layout is fine, but the child view not showing at my custom linear layout. i tried some way to fix it, but still cant solve it.
public class CustomLinearLayout extends LinearLayout {
public CustomLinearLayout(Context context) {
super(context);
}
public CustomLinearLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int height = MeasureSpec.getSize(heightMeasureSpec);
setMeasuredDimension(height, height);
}
}
this is the xml that contain my custom linear layout. the child view not showing.
<com.example.admin.antriclient.CustomLinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:autofit="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="100dp"
android:layout_height="100dp"
android:background="#drawable/bg_nomor_antrian"
android:padding="10dp"
>
<me.grantland.widget.AutofitTextView
android:id="#+id/service_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Teller"
android:textColor="#color/white"
android:textStyle="bold"
android:gravity="center_horizontal"
android:singleLine="false"
autofit:minTextSize="12sp"
/>
<me.grantland.widget.AutofitTextView
android:id="#+id/nomor_antrian"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="T21"
android:textSize="50sp"
android:textColor="#color/white"
android:textStyle="bold"
android:gravity="center_horizontal"
android:singleLine="true"
autofit:minTextSize="12sp"
/>
</com.example.admin.antriclient.CustomLinearLayout>
thanks in advance

My problem is because i didnt call the super.onMeasure() method. Thanks to Mike M.
my class should be like this
public class CustomLinearLayout extends LinearLayout {
public CustomLinearLayout(Context context) {
super(context);
}
public CustomLinearLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(heightMeasureSpec,heightMeasureSpec);
//int height = MeasureSpec.getSize(heightMeasureSpec);
//setMeasuredDimension(height, height);
}
}

For me I had to add a LayoutInflater for it to show
public class SidebarLayout extends LinearLayout {
private static final String TAG = "SidebarLayout";
public SidebarLayout(Context context) {
super(context);
}
public SidebarLayout(Context context, #Nullable AttributeSet attrs) {
super(context, attrs);
LayoutInflater.from(context).inflate(R.layout.sidebar, this);
}
public SidebarLayout(Context context, #Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
}
<com.example.a3danimationtester.SidebarLayout
android:id="#+id/layout_sidebar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="32dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/layout_topbar" />

Android custom AutoCompleteTextView doesn't appear after hiding

I create an autoCompleteTextView as below Layout and Java class :
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/autoCompleteTextViewGroup"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="true"
android:minHeight="#dimen/component_height">
<android.support.design.widget.TextInputLayout
android:id="#+id/textInputLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="start"
android:animateLayoutChanges="true">
<AutoCompleteTextView
android:id="#+id/autoCompleteTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:completionThreshold="1"
android:singleLine="true" />
</android.support.design.widget.TextInputLayout>
<android.support.v4.widget.ContentLoadingProgressBar
android:id="#+id/progressBar"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_gravity="center_vertical"
android:indeterminate="true"
android:indeterminateDrawable="#anim/anim_indeterminate_mini"
android:interpolator="#anim/anim_progress_interpolator"
android:visibility="visible" />
</FrameLayout>
and Java class is :
public class MAutoCompleteText extends LinearLayout {
AutoCompleteTextView autoCompleteTextView;
ContentLoadingProgressBar progressBar;
TextInputLayout textInputLayout;
ViewGroup autoCompleteTextViewGroup;
public MAutoCompleteText(Context context) {
super(context);
init(context);
}
public MAutoCompleteText(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
public MAutoCompleteText(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context);
}
#TargetApi(21)
public MAutoCompleteText(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
init(context);
}
private void init(Context context) {
inflate(context, R.layout.layout_auto_complete_text, this);
autoCompleteTextViewGroup = (ViewGroup) findViewById(R.id.autoCompleteTextViewGroup);
textInputLayout = (TextInputLayout) findViewById(R.id.textInputLayout);
autoCompleteTextView = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView);
progressBar = (ContentLoadingProgressBar) findViewById(R.id.progressBar);
}
public void setAdapter(ArrayAdapter<String> adapter) {
autoCompleteTextView.setAdapter(adapter);
}
public String getText() {
return autoCompleteTextView.getText().toString();
}
public void setErrorEnabled(boolean status) {
textInputLayout.setErrorEnabled(status);
}
public void setError(int errorId) {
textInputLayout.setError(getContext().getString(errorId));
}
public int getVisibility() {
return autoCompleteTextViewGroup.getVisibility();
}
public void setVisibility(int visibility) {
autoCompleteTextViewGroup.setVisibility(visibility);
autoCompleteTextViewGroup.setMinimumHeight(R.dimen.component_height);
}
public void setProgressBarVisibility(int visibility) {
progressBar.setVisibility(visibility);
}
public MAutoCompleteText setHint(int hintId) {
autoCompleteTextView.setHint(hintId);
return this;
}
public void setImeOption(int imeOption) {
autoCompleteTextView.setImeOptions(imeOption);
}
}
Everything work OK. I setVisibility(GONE) and my component hide from UI,
but when I use setVisibility(VISIBLE) doesn't happen any thing !!!!
How can I display my component programmatically?

I found answer of my problem , at least it works now ... :)
I change setVisibility to below code :
public void setVisibility(int visibility) {
autoCompleteTextViewGroup.setVisibility(visibility);
if (visibility == View.VISIBLE) {
textInputLayout.setVisibility(visibility);
autoCompleteTextView.setVisibility(visibility);
progressBar.setVisibility(visibility);
requestLayout();
}
}
In fact requestLayout(); reDraw layout of my component on UI again and it`s appear correctly .

Custom widget not duplicating children drawable state

I have a custom widget which is basically an EditText which has a small 'clear' button to the right, which cleans the edittext.
I built it as a subclass of LinearLayout, which adds the EditText and the Button in the constructor.
Everything works the way it should, except that I want the whole LinearLayout to have a Focused style when the EditText has focus; I want the user to see it as an EditText, not as a container with an EditText.
I attempted using addStatesFromChildren, but it does not seem to work. Code attached.
ErasableField.java
public class ErasableField extends LinearLayout {
private EditText editText;
private View button;
public ErasableField(Context context) {
super(context);
init(null);
}
public ErasableField(Context context, AttributeSet attrs) {
super(context, attrs);
init(attrs);
}
public ErasableField(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(attrs);
}
private void init(AttributeSet attrs) {
this.setOrientation(HORIZONTAL);
LayoutInflater inflater = LayoutInflater.from(getContext());
editText = (EditText) inflater.
inflate(R.layout.erasable_field_edittext, this, false);
button = inflater.inflate(R.layout.erasable_field_button, this, false);
if (attrs != null) {
TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.ErasableField);
boolean password = a.getBoolean(R.styleable.ErasableField_password, false);
if (password) {
editText.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
} else {
editText.setInputType(InputType.TYPE_CLASS_TEXT);
}
}
editText.setFocusable(true);
editText.setClickable(true);
editText.setFocusableInTouchMode(true);
this.setClickable(false);
this.setFocusable(false);
this.setFocusableInTouchMode(false);
this.setGravity(Gravity.CENTER_VERTICAL);
this.setBackgroundResource(android.R.drawable.editbox_background);
addView(editText);
addView(button);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
editText.getText().clear();
}
});
this.addStatesFromChildren();
}
public Editable getText() {
return editText.getText();
}
public void setText(CharSequence text) {
editText.setText(text);
}
public void setText(int resId) {
editText.setText(resId);
}
public void setText(char[] text, int start, int len) {
editText.setText(text, start, len);
}
}
erasable_field_edittext.xml
<EditText xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="fill_parent"
android:background="#color/white"
android:singleLine="true"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:textCursorDrawable="#color/grey"
>
</EditText>
erasable_field_button.xml
<ImageButton xmlns:android="http://schemas.android.com/apk/res/android"
style="#style/Button.Delete"
>
</ImageButton>
Nevermind the missing style, it's just a red button with a little cross, it looks like this:
When the user taps the edittext area, the style should change to a focused style.
I.e. (ignore the different button look ):
The style I'm trying to use a built in from Android:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_focused="true" android:drawable="#drawable/editbox_background_focus_yellow" />
<item android:drawable="#drawable/editbox_background_normal" />
</selector>
Any help?

It's fixed by changing
this.addStatesFromChildren();
to
this.setAddStatesFromChildren(true);
...

Android Auto Scrolling EditText Hint

problem with making edittext scrollable
there is mentioned that it is not scrollable with singleLine=true.
So i have 2 options:
I check if the user inputs "\n" and delete that, then i have to worry about things in the second line, too.
I use a custom textviews which scrolls through in a loop, could this be used here too only for the hint ?
<com.test.ScrollingTextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_marginTop="1dp"
android:layout_weight="0.17"
android:background="#color/black"
android:ellipsize="marquee"
android:gravity="center_vertical"
android:marqueeRepeatLimit="marquee_forever"
android:paddingLeft="10dp"
android:scrollHorizontally="true"
android:singleLine="true"
android:text="#string/editLength"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#color/white" />
public class ScrollingTextView extends TextView {
public ScrollingTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public ScrollingTextView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public ScrollingTextView(Context context) {
super(context);
}
#Override
protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
if (focused)
super.onFocusChanged(focused, direction, previouslyFocusedRect);
}
#Override
public void onWindowFocusChanged(boolean focused) {
if (focused)
super.onWindowFocusChanged(focused);
}
#Override
public boolean isFocused() {
return true;
}
}
I just cant get this formated right. Sorry for that.

Make your EditText Scrollable like this:
EditText yourEditText = new EditText(context);
yourEditText.setScroller(new Scroller(context));
yourEditText.setMaxLines(1);
yourEditText.setVerticalScrollBarEnabled(true);
yourEditText.setMovementMethod(new ScrollingMovementMethod());

How do I get text to Marquee in the Android-wheel?

I am using the android-wheel http://code.google.com/p/android-wheel/ in an application.
I have three of the wheels side by side on my screen. When the text in a wheel is wider than the wheel I would like it to scroll to the side (As per Marquee)
I have implemented an AbstractWheelTextAdapter and created a custom ScrollingTextView for the items as follows: (ScrollingTextView is to overcome the issue with Marquee only working when an item has focus)
public class ScrollingTextView extends TextView {
public ScrollingTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public ScrollingTextView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public ScrollingTextView(Context context) {
super(context);
}
#Override
protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
if(focused)
super.onFocusChanged(focused, direction, previouslyFocusedRect);
}
#Override
public void onWindowFocusChanged(boolean focused) {
if(focused)
super.onWindowFocusChanged(focused);
}
#Override
public boolean isFocused() {
return true;
}
}
And the xml:
<com.test.app.ScrollingTextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id = "#+id/wheel_text"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:inputType="text"
android:scrollHorizontally="true"
android:textColor="#F000"
android:lines="1"
android:focusable="true"
android:ellipsize="marquee"
android:marqueeRepeatLimit="marquee_forever"
android:focusableInTouchMode="true"/>
Has anyone been able to get this to work?
(I have also tried setting the Ellipse in the code for the AbstractWheelTextAdapter without success)

Because the WheelView didn't invalidate itself.In Activity,add the code :
Handler handler = new Handler() {
#Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
wheelview.invalidate();
sendEmptyMessageDelayed(0, 0);
}
};
handler.sendEmptyMessage(0);
Then the TextView Marquee effect works.But when you scroll the WheelView,the TextView string reset from start.
I had try the TextView Marquee effect in ListView, the Marquee effect works.I gonna check the ListView source code ,see what differences between ListView and WheelView.