I'm adding views programatically into FrameLayout:
public class PixelGridView extends FrameLayout {
...
public void addViewWithoutCoords(TableView view, int column, int row) {
float x = column * mCellSideSize;
float y = row * mCellSideSize;
FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
view.setLayoutParams(lp);
view.setLeft(0);
view.setTop(0);
view.setX(x);
view.setY(y);
view.setVisibility(VISIBLE);
addView(view);
}
...
}
However, all they are somehow invisible. getChildCount() returns count with all of them. getVisibility() for each added view also returns VISIBLE.
I can drag'n'drop such views from another ViewGroup into my Framelayout and when I do this, all earlier added views become visible.
view layout file:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent">
<ImageView
android:id="#+id/ivTable"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"/>
<EditText
android:id="#+id/ivTableName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="#color/style_table_grey"
android:textColor="#android:color/white"/>
</RelativeLayout>
Even If I add new view without drag everything become visible.
The item view of the FrameLayout and RelativeLayout can be overlapping. If two item views are in the same positions of FrameLayout, the first loaded item will be covered by the later item.
Try turn on the show layout bounds in developer option of your android devices,and find the position of your item.
Related
I am customizing an android Spinner Widget. I am trying to use different background colors against the list items. This is working, but when there are more items in the spinner control, the list items are not occupying the full space horizontally, thus showing white space on the popup view.
For small number of items, it is working fine.
I have tried custom and default Layout customizations.
JAVA Custom Spinner View Code
#Override
public View getView(int pos, View view, ViewGroup parent)
{
LayoutInflater objInflater = LayoutInflater.from(context);
view = objInflater.inflate(R.layout.spinner_item_colored, null);
LinearLayout llOption = (LinearLayout) view.findViewById(R.id.llOption);
TextView tvOption = (TextView) view.findViewById(R.id.tvOption);
if (alDefects.get(pos).sNature.equalsIgnoreCase("1"))
llOption.setBackgroundColor(getResources().getColor(R.color.majorDefect));
else if (alDefects.get(pos).sNature.equalsIgnoreCase("2"))
llOption.setBackgroundColor(getResources().getColor(R.color.criticalDefect));
else
llOption.setBackgroundColor(getResources().getColor(R.color.minorDefect));
tvOption.setTextColor(getResources().getColor(R.color.white));
tvOption.setText(alDefects.get(pos).sDefect);
return view;
}
XML Code:
<LinearLayout
android:id="#+id/llOption"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:layout_weight="1"
android:paddingTop="8dp"
android:paddingBottom="8dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:layout_margin="0dp"
xmlns:android="http://schemas.android.com/apk/res/android">
<TextView
android:id="#+id/tvOption"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center_vertical|left"
android:singleLine="false"
android:textColor="#444444"
android:textSize="13dp" />
I want the spinner popup to use full available width for Background color when there is a scrollbar.
Please click this Link to see the Sample Output
When you use weight you should set android:layout_width="0dp"
I'm using a custom layout for a Spinner DropDownview, it has a brown background with white letters. There are some white stripes appearing at the bottom of the view1, that I want to remove but I don't know how neither why they are appearing;
here are the code that I'm using for the spinner_dropdown_item:
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#android:id/text1"
style="?android:attr/spinnerDropDownItemStyle"
android:layout_width="match_parent"
android:layout_height="#dimen/dropdownListPreferredItemHeight"
android:background="#color/marrom"
android:ellipsize="marquee"
android:gravity="center_vertical"
android:minHeight="#dimen/txt_min_height"
android:paddingEnd="#dimen/md_keylines"
android:paddingStart="#dimen/md_keylines"
android:singleLine="true"
android:textAllCaps="true"
android:textColor="#color/white"
android:textSize="#dimen/text_subtitle"
tools:text="spinner dropdown item" />
and the getDropdownView inside the spinner adapter:
#Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
T element = elements.get(position);
convertView = LayoutInflater.from(parent.getContext()).inflate(getDropdownLayout(), parent, false);
final TextView textView = (TextView) convertView;
textView.setText(getDisplayName(element));
return textView;
}
where the function getDropdownLayout returns the layout above
After some research, I stumbled upon a suggestion:spinner with a rectangular border.
Create 9 patch image(Rectangle Box) which helps you to set the spinner with different resolution.
After creating 9 patch image use it as a background of the Spinner.
Here is a link that makes creating that 9pacth image simple:http://inloop.github.io/shadow4android/
Here is my example:
Is there a way to set the viewable item count for a listview? or am I obliged to set the height for the listview?
For instance, I got a list that includes 9 items. I only want 4 of them to appear at first. Then user needs to scroll to see other items.
list_anlam.xml
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_margin="1dp"
android:background="#android:color/darker_gray" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/title_popup_hikayeoku" />
<EditText android:id="#+id/kelime_text"
android:inputType="text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<ListView android:id="#+id/list_anlam"
android:layout_width="match_parent"
android:layout_height="wrap_content"></ListView>
<Button
android:id="#+id/button_sec"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/button_popup_hikayeoku" />
</LinearLayout>
list_item.xml :
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textSize="20sp"
android:padding="10dp" />
Where I fill items into listview : HikayeOkuActivity.java is
String[] anlamlar = null;
anlamlar = MainActivity.dbM.ilkAnlamGetir(selectedText);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.list_item,anlamlar);
anlamList.setAdapter(adapter);
popupWindow.showAsDropDown(mainLayout, touchedX,touchedY);
Yes, you need to get the height of the listview. In your onCreate you do something like:
listview.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
height = listView.getHeight();
}
In the getView method of your adapter you then use the height divided by four to set the height of each list item.
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = activity.getLayoutInflater();
View rowView = inflater.inflate(R.layout.item_layout, parent, false);
rowView.setMinHeight(height/4);
return rowView;
}
Now this should preferably be done with a ViewHolder, but that's not the topic here.
Basically, the height of each view must be 1/4 of the height of your ListView. If you want to support all device resolutions, you have to calculate it. If you need more info about that, add a comment and I will explain it in detail.
Important for details, what kind of Adapter are you using for your ListView?
Correct me if I'm wrong, but..
you could also use an android:WEIGHTSUM and android:WEIGHT parameters in your xml layouts. Set android:weightsum=1 for parent view (your ListView) and android:weigth=0.25 for child views (layout of ListView items). In this case you don't have to calculate heights of your viewables.
I am trying to center a view within a parent RelativeLayout:
private void addLoadingAnimation() {
RelativeLayout mainView = (RelativeLayout) findViewById(R.id.medical_supply_tile_activity);
mainView.removeAllViews();
GifView gifView = new GifView(this);
RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT);
gifView.setId(R.id.loading_gif);
mainView.setBackgroundColor(getResources().getColor(android.R.color.background_light));
mainView.addView(gifView,layoutParams);
}
I have also tried adding layoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, 0); before the CENTER_IN_PARENT line. Nothing seems to be working. It is always aligned to the bottom right.
Here is my parent view:
<RelativeLayout 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:background="#android:color/background_light"
tools:context=".MedecineTileActivity"
android:id="#id/medical_supply_tile_activity"
android:layout_gravity="left">
</RelativeLayout>
The gravity=left is because when the loading animation is removed, I insert fragments and want them to go to the left.
I have achieved this with TextViews and ImageViews by aligning the child View's right to the parent's right and also aligning the child View's left to the parent's left.
<TextView
style="#style/NewTextM2"
android:id="#+id/soft_dialog_info_item_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/<Parent>"
android:layout_alignLeft="#+id/<Parent>"
android:layout_alignRight="#+id/<Parent>"
android:gravity="center"
android:tag="item_text"
android:text="#string/text"
android:maxLines="1" />
This will align the view to the bottom center of the parent.
I have layout with controls:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/contact_phones_layout_row"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<EditText
android:id="#+id/contact_phone"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="3"
android:inputType="phone" />
<Spinner
android:id="#+id/contact_phone_type"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1" />
</LinearLayout>
And I want to inflate it into another layout on the fragment. Quantity of these controls depends on values in a array. Array contains controls objects. So every time onCreateView rises I filled the layout from the array:
private void addLine(PhoneLine line) {
LinearLayout layout = (LinearLayout) mLayout.findViewById(R.id.contact_phones_layout);
View view = line.getParent();
((ViewGroup) view.getParent()).removeView(view);
layout.addView(view, layout.getChildCount() - 1);
setButtonVisible(false);
}
if line is null controls are created this way:
private void addLine() {
LinearLayout layout = (LinearLayout) mLayout.findViewById(R.id.contact_phones_layout);
View view = inflater.inflate(R.layout.contact_phone_line, layout, false);
EditText phoneEditText = (EditText) view.findViewById(R.id.contact_phone);
Spinner phoneType = (Spinner) view.findViewById(R.id.contact_phone_type);
phoneLines.add(new PhoneLine(phoneEditText, phoneType, view));
layout.addView(view, layout.getChildCount() - 1);
}
But after that I get same values in all EditText/Spinner controls, values equal to last element in the array. What can be wrong? May be there is more pure way to add controls dynamically?
I fixed it by adding controls when onResume rises, not onCreateView. But I still don't understand why onCreateView changes all values.