Aligning A Relative Layout Progmatically in Another Activity - java

Ok, I am completely stuck on this. I have looked everywhere for an answer but no solutions I found did me any good. What I am trying to do is add a relative layout to a linear layout and I can do that just fine, the problem is that I can only set the height and the width of the relative layout, and can't align it below any views in the linear layout. I'm guessing this is because the relative layout isn't a child of the linear layout? Only reason I am taking the above approach is because I need to add a relative layout for every record I have in a database table. Anyway here is the code below any help would be great :)
individual_past_test.xml file
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/past_test"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#E4EFF5" >
<TextView
android:id="#+id/candidate_name"
style="#style/past_test_candidate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="25dp" />
</RelativeLayout>
IndividualPastTest.java
public class IndividualPastTests extends RelativeLayout {
private Context mContext;
public IndividualPastTests(Context context) {
super(context);
mContext = context;
String infService = Context.LAYOUT_INFLATER_SERVICE;
LayoutInflater li;
li = (LayoutInflater) getContext().getSystemService(infService);
li.inflate(R.layout.individual_past_test, this, true);
}
}
PastTests.java (relevant parts)
past_tests_label = (TextView) findViewById(R.id.past_tests_label);
past_tests_label.setId(1);
addViewForFirstTest();
private void addViewForFirstTest() {
past_test = new IndividualPastTests(this);
RelativeLayout.LayoutParams past_test_view_params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
past_test.setGravity(Gravity.CENTER_HORIZONTAL);
// Not being called?
past_test_view_params.addRule(RelativeLayout.BELOW, past_tests_label.getId());
past_test_view_params.height = 100;
past_test_view_params.width = 600;
System.out.println(past_tests_label.getId());
past_test.setLayoutParams(past_test_view_params);
this.addContentView(past_test, past_test_view_params);
}

Ok I ended up fixing it by adding a relative layout to my xml file for past tests(which I didnt add to the question), then changed my PastTests.java as follows -
// Added this line to get the RelativeLayout I created in the xml to hold my view
pasts_tests_holder = (RelativeLayout) findViewById(R.id.past_tests_holder)
past_tests_label = (TextView) findViewById(R.id.past_tests_label);
past_tests_label.setId(1);
addViewForFirstTest();
private void addViewForFirstTest() {
past_test = new IndividualPastTests(this);
RelativeLayout.LayoutParams past_test_view_params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
past_test.setGravity(Gravity.CENTER_HORIZONTAL);
past_test_view_params.addRule(RelativeLayout.BELOW, past_tests_label.getId());
past_test_view_params.height = 100;
past_test_view_params.width = 600;
past_test.setLayoutParams(past_test_view_params);
// Changed this line to add the past_test view to my new relative layout
past_tests_holder.addView(past_test);
Here are the relevant parts to my past_tests.xml file for reference -
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/prev_test_view"
android:orientation="vertical" >
<RelativeLayout
android:id="#+id/past_tests"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/past_tests_label"
android:layout_centerHorizontal="true"
android:layout_marginTop="227dp" >
</RelativeLayout>
</LinearLayout>
Hope this helps anyone else who is having trouble pragmatically setting views in android

Related

Dynamically Created Layout not Showing

I've looked at this question here, however I still cannot find out what I'm doing wrong. There are no errors in Logcat and there definitely is data being passed to it to be made. Here's my setup:
This is all taking place below manually placed elements that I have placed in Android Studio. I have a ScrollView. Inside that ScrollView, I have a LinearLayout, parentLayout, that get's passed to this class. This method is supposed to add another Horizontal LinearLayout, layout, parentLayout. Then it is supposed to add a TextView, titleDisplay, and two Buttons to layout. So far I have only programmed just layout and titleDisplay. I tested it, and nothing was added. So before I program the other two buttons, I would like to know what I am doing wrong. Here's the Java Code:
public class FollowupOption {
private String displayName;
private JSONObject jsonInformation;
private Context context;
private LinearLayout parentLayout;
private LinearLayout layout;
private TextView titleDisplay;
private Button deleteButton, editButton;
public FollowupOption(String displayName, JSONObject jsonInformation,
Context context, LinearLayout parentLayout){
this.displayName = displayName;
this.jsonInformation = jsonInformation;
this.context = context;
this.parentLayout = parentLayout;
buildLayout();
}
private void buildLayout(){
//Horizontal Linear Layout to hold everything
this.layout = new LinearLayout(context);
this.layout.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
this.layout.setOrientation(LinearLayout.HORIZONTAL);
this.parentLayout.addView(this.layout);
//Text View Displaying title of followup option.
this.titleDisplay = new TextView(context);
try {
this.titleDisplay.setText(this.jsonInformation.getJSONObject("list").getString("title"));
} catch(JSONException e){ e.printStackTrace(); }
this.titleDisplay.setTextColor(0x8f142a); //Black
this.titleDisplay.setTextSize(18);
this.titleDisplay.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, 1f));
this.layout.addView(this.titleDisplay);
}
}
Here's my XML:
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/parent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingTop="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="38dp"
android:orientation="horizontal">
<TextView
android:id="#+id/textView15"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="0.22"
android:gravity="center"
android:text="#string/followup_text"
android:textColor="#color/myRed"
android:textSize="18sp" />
<Button
android:id="#+id/followup_add_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
android:text="#string/plus"
android:textAlignment="center"
android:textColor="#android:color/holo_green_dark"
android:textSize="30sp"
android:textStyle="bold" />
</LinearLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="279dp"
android:paddingLeft="7dp"
android:paddingRight="7dp"
android:paddingTop="7dp">
<LinearLayout
android:id="#+id/followup_parent"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
</ScrollView>
<Button
android:id="#+id/followup_new_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/new_followup_text" />
</LinearLayout>
</merge>
If someone could let me know what I am doing wrong or a good way to debug something like this, that would be appreciated.
Are you adding this.layout view to some view?
UPD: The problem is with your text color. Consider using the Color class to get color from its hex value or constants from that class.
Does your XML view (without the addition of the dynamic layout) take up the entire screen?
The new LinearLayout view will be added below the button. If the button is at the bottom of the screen, the layout will be added off the screen and therefore not visible.
You should add your new layout to the scroll view instead.

How to create a scroll list of custom relative layouts not stacking upon each other in Android Studio?

I want to create a scroll view list which would show "boxes" or more accurately custom made layouts (I'm using a custom class that extends a RelativeLayout - basically shows different pieces of information, some are static like places' working hours and some change dynamically and will be pulled from a server).
Though I encountered a problem - I (for the sake of seeing if my solution works) created 5 boxes and added them to the scroll view list but it seems like they are stacked upon each other. What's the proper way to make them appear one under another without manually tweaking their position coordinates? I was using addView() for that purpose but it doesn't work as intended for me or I use it poorly. If you know the answer, please briefly describe how this should be done.
Thanks in advance!
EDIT, here goes the code:
public class RestaurantBox extends RelativeLayout {
RestaurantBox (Context context){
super(context);
this.setBackgroundColor(context.getResources().getColor(R.color.colorAccent));
TextView restaurantName = new TextView(context);
restaurantName.setText("Test Restaurant");
RelativeLayout.LayoutParams restNameParams = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
this.addView(restaurantName, restNameParams);
restaurantName.setTypeface(null, Typeface.BOLD);
TextView freeSpots = new TextView(context);
freeSpots.setText("15/20");
RelativeLayout.LayoutParams freeSpotParams = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
freeSpotParams.topMargin = restNameParams.bottomMargin + 50;
this.addView(freeSpots, freeSpotParams);
TextView book = new TextView(this.getContext());
RelativeLayout.LayoutParams bookParams = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
book.setText("Book");
bookParams.setMargins(0,freeSpotParams.bottomMargin + 100,0,0);
this.addView(book, bookParams);
}
}
public class BrowseRestaurants extends AppCompatActivity {
int restaurantCount;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_browse_restaurants);
Intent intent = getIntent();
String login = intent.getStringExtra("LOGIN");
TextView text = (TextView) findViewById(R.id.txtWelcomeUser);
text.setText("Welcome, " + login);
RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.relLayoutRestaurants);
RestaurantBox initRBox = new RestaurantBox(this);
initRBox.setTop(0);
initRBox.setBottom(300);
relativeLayout.addView(initRBox);
for(int i=1;i<5;i++){
final View view = relativeLayout.getChildAt(i-1);
RestaurantBox restaurantBox = new RestaurantBox(this);
restaurantBox.setTop(view.getBottom() + 50);
restaurantBox.setBottom(restaurantBox.getTop() + 300);
relativeLayout.addView(restaurantBox);
}
}
}
<!-- activity_browse_restaurants.xml-->
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:orientation="vertical"
tools:context="com.konrad.rezerwacje1.BrowseRestaurants">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/scrollViewRestaurants"
android:layout_below="#+id/txtWelcomeUser"
android:layout_alignParentStart="true">
<RelativeLayout
android:id="#+id/relLayoutRestaurants"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="65dp"
android:orientation="vertical">
</RelativeLayout>
</ScrollView>
<TextView
android:id="#+id/txtLogout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/Logout"
android:textColor="#android:color/holo_red_dark"
android:textSize="18sp"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true" />
<TextView
android:id="#+id/txtWelcomeUser"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="#style/TextAppearance.AppCompat.Display1"
android:textColor="#android:color/holo_blue_dark"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="9dp" />
</RelativeLayout
>
you are adding view in RelativeLayout so view stacking on each other so change it to LinearLayout in activity_browse_restaurants.xml
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/scrollViewRestaurants"
android:layout_below="#+id/txtWelcomeUser"
android:layout_alignParentStart="true">
<LinearLayout
android:id="#+id/relLayoutRestaurants"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="65dp"
android:orientation="vertical">
</LinearLayout>
</ScrollView>
now make changes according to in BrowseRestaurants.class
replace
RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.relLayoutRestaurants);
with
LinearLayout relativeLayout = (LinearLayout) findViewById(R.id.relLayoutRestaurants);
else will be fine if you want to change variable name its up to u, let me know if any problem

ImageView inside ListView is ignoring all layout dimensions and filling the whole screen

I'm trying to create a set of 4 dynamically updating listviews of icons.
To do this, I've put my 4 listviews inside a gridview, and I'm using a custom layout for each listview item with a single imageview inside it. I'm handling changing the icon inside a custom adapter. I'm using the Picasso library to handle the icons, and all my icons are stored locally in drawable as .png files.
I'm not getting any errors, but when I run the app, all I get is a single icon that takes up the whole screen. I have a small imageview and a textview above the gridview that contains the lists of icons, but the one icon pushes even that out of the way.
This is my layout preview, and a screenshot of the app running in an emulator. (the result is the same if I run on my phone).
preview,
running
(apologies for not embedding, I'm new to SO, and don't have 10 rep yet haha)
I've tried resizing the image at runtime inside my custom adapter. I've tried setting the maximum width of the listview - both at runtime (since I want to adapt to different screen dimensions), and in the xml files. I've tried resizing the source .png files outside of android studio. Nothing's worked.
My activity xml file:
<?xml version="1.0" encoding="utf-8"?>
<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:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.example.sta.tomov0.MainActivity">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/tomoFace"
android:src="#drawable/office38"
android:layout_centerHorizontal="true"
android:layout_marginTop="30dp"
android:layout_marginBottom="20dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="100dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Large Text"
android:id="#+id/textView"
android:layout_alignParentLeft="false"
android:layout_alignParentStart="false"
android:layout_below="#+id/tomoFace"
android:layout_centerHorizontal="true"
android:layout_alignParentTop="false"
android:layout_marginBottom="50dp" />
<GridLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:rowCount="1"
android:id="#+id/gridLayout"
android:layout_below="#+id/textView"
android:columnCount="5">
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/listViewA"
android:layout_row="0"
android:layout_column="0" />
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/listViewB"
android:layout_row="0"
android:layout_column="1" />
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/listViewC"
android:layout_row="0"
android:layout_column="2" />
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/listViewD"
android:layout_column="3"
android:layout_row="0" />
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageButton"
android:layout_column="4"
android:layout_row="0"
android:onClick="addTask"
android:src="#android:drawable/stat_notify_more" />
</GridLayout>
</RelativeLayout>
My listview layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/listImageView"
android:layout_alignParentTop="false"
android:layout_alignParentLeft="false"
android:layout_alignParentStart="false" />
</RelativeLayout>
and my activity.java file:
public class MainActivity extends AppCompatActivity {
ImageView tomoface;
ListView listViewA;
ArrayList arrayListA = new ArrayList<Integer>();
Boolean aExists = false;
ListView listViewB;
ArrayList arrayListB = new ArrayList<Integer>();
Boolean bExists = false;
ListView listViewC;
ArrayList arrayListC = new ArrayList<Integer>();
Boolean cExists = false;
ListView listViewD;
ArrayList arrayListD = new ArrayList<Integer>();
Boolean dExists = false;
Button addButton;
TextView tomoText;
File tomoFiles;
File taskFiles;
String currentCommunity = "Dep";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Paper.init(getApplicationContext());
tomoface = (ImageView) findViewById(R.id.tomoFace);
tomoface.setImageResource(R.drawable.favourite15);
tomoText = (TextView) findViewById(R.id.textView);
listViewA = (ListView) findViewById(R.id.listViewA);
listViewB = (ListView) findViewById(R.id.listViewB);
listViewC = (ListView) findViewById(R.id.listViewC);
listViewD = (ListView) findViewById(R.id.listViewD);
tomoFiles = getDir("TomoFiles", MODE_PRIVATE);
taskFiles = new File(tomoFiles, "taskFiles");
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width =(size.x)/5;
ViewGroup.LayoutParams params = listViewA.getLayoutParams();
params.height = width;
params.width = width;
listViewA.setLayoutParams(params);
listViewB.setLayoutParams(params);
listViewC.setLayoutParams(params);
listViewD.setLayoutParams(params);
/*
If there is no data saved, the following code creates a list of (empty) lists to hold TaskClass objects
The 4 sub lists each represent one category.
If there is data saved, the following code retrieves that data, and creates 4 new ArrayLists,
each containing the iconIds of the TaskClass objects in the corresponding position of the corresponding TaskClass arraylist.
These ArrayLists of ids are then used to populate the 4 listviews.
*/
ArrayList<ArrayList<TaskClass>> listList = Paper.book(currentCommunity).read("listList", new ArrayList<ArrayList<TaskClass>>());
if (listList.size() == 0){
listList.add(new ArrayList<TaskClass>());
listList.add(new ArrayList<TaskClass>());
listList.add(new ArrayList<TaskClass>());
listList.add(new ArrayList<TaskClass>());
} else {
for(TaskClass t:listList.get(0)){
arrayListA.add(t.getIcon());
}
for(TaskClass t:listList.get(1)){
arrayListB.add(t.getIcon());
}
for(TaskClass t:listList.get(2)){
arrayListC.add(t.getIcon());
}
for(TaskClass t:listList.get(3)){
arrayListD.add(t.getIcon());
}
}
Integer[] intArrayA = new Integer[arrayListA.size()];
for (int i = 0; i < arrayListA.size(); i++){
intArrayA[i] =(Integer) arrayListA.get(i);
}
ArrayAdapter adapterA = new CustomArrayAdapter(getApplicationContext(),intArrayA);
listViewA.setAdapter(adapterA);
Integer[] intArrayB = new Integer[arrayListB.size()];
for (int i = 0; i < arrayListB.size(); i++){
intArrayB[i] =(Integer) arrayListB.get(i);
}
ArrayAdapter adapterB = new CustomArrayAdapter(getApplicationContext(),intArrayB);
listViewB.setAdapter(adapterB);
Integer[] intArrayC = new Integer[arrayListC.size()];
for (int i = 0; i < arrayListC.size(); i++){
intArrayC[i] =(Integer) arrayListC.get(i);
}
ArrayAdapter adapterC = new CustomArrayAdapter(getApplicationContext(),intArrayC);
listViewC.setAdapter(adapterC);
Integer[] intArrayD = new Integer[arrayListD.size()];
for (int i = 0; i < arrayListD.size(); i++){
intArrayD[i] =(Integer) arrayListD.get(i);
}
ArrayAdapter adapterD = new CustomArrayAdapter(getApplicationContext(),intArrayD);
listViewD.setAdapter(adapterD);
}
//TODO: create a custom adapter that will display icons correctly
public class CustomArrayAdapter extends ArrayAdapter{
private final Context context;
private final Integer[] values;
public CustomArrayAdapter(Context context, Integer[] values) {
super(context, -1, values);
this.context = context;
this.values = values;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View iconView = inflater.inflate(R.layout.iconlayout, parent, false);
ImageView imageView = (ImageView) iconView.findViewById(R.id.listImageView);
int s =(int) values[position];
imageView.setImageResource(s);
//get the device width, to calculate icon width, and then set icon width accordingly
//TODO: setting icon width not working
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width =(size.x)/5;
Uri uri = Uri.parse("android.resource://com.example.sta.tomov0/drawable/"+s);
Picasso.with(context).load(uri).resize(width,width).fit().centerCrop().into(imageView);
return iconView;
}
}
}
A note: I have a custom data management class that returns arraylists. That's tested separately and working fine. The arraylists that are being fed to the adapter are int arraylists of the drawable references.
Help! What am I doing wrong? I've been searching through SO all day and trying different things. The solutions posted in these questions haven't helped T-T:
How to set ImageView width in android ListView?
ImageView in ListView that expands maximum width
(that was a bit difficult to implement, and just created other problems - it seems like overkill to create a custom view class just for displaying an icon?)
Give fixed height to your Imageview in My listview layout:
Say Something like
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="wrap_parent">
<ImageView
android:layout_width="wrap_content"
android:layout_height="120dp"
android:id="#+id/listImageView"
android:layout_alignParentTop="false"
android:layout_alignParentLeft="false"
android:layout_alignParentStart="false" />
</RelativeLayout>
I'm assuming #drawable/office38 is the image shown in your screenshot (taking up the whole screen)?
Try setting the dimensions of this image to something small, eg:
android:layout_width="50dp"
android:layout_height="50dp"
I know this may not be what you are actually looking to do, but at least it will show you if the problem is with that first ImageView or not and will free up space below it for the TextView and the GridLayout. It could be that the drawable is massive, and as you aren't specifying a set width/height or any scale options, it takes up all the space it can.
Also, have a look at http://developer.android.com/reference/android/widget/ImageView.html#attr_android:scaleType which describes the different scaling options you have with an ImageView.
GOT IT.
sorry guys. It was a really dumb problem after all.
My listview adapter is working fine it turns out. The problem was in the imageview that was outside of the lists (tomoface) - for some reason, I decided to set it to a different drawable on runtime, and hadn't scaled that at all haha.

How to add dynamic buttons vertically one after another in android?

I want to set the buttons one after another vertically. I was trying something like below, but it doesn't work. Need help please.
RelativeLayout body=(RelativeLayout) findViewById(R.id.body);
RelativeLayout.LayoutParams buttonParams =
new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
Button btn;
List<Button> allEds = new ArrayList<Button>();
for(int i=0;i<totalSID;i++){
btn = new Button(FaqList.this);
btn.setId(i);
allEds.add(btn);
if(i==0){}
else
buttonParams.addRule(RelativeLayout.BELOW,allEds.get(i-1).getId());
body.addView(btn,buttonParams);
}
Adding the xml file. For reference you can go through it.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true"
android:scrollbars="vertical"
>
<HorizontalScrollView
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:fillViewport="true"
>
<LinearLayout
android:layout_marginTop="20dp"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_marginBottom="20dp"
>
<LinearLayout
android:id="#+id/body"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="5dp"
android:layout_marginTop="5dp"
android:orientation="horizontal"
android:animateLayoutChanges="true">
</LinearLayout>
</LinearLayout>
</HorizontalScrollView>
</ScrollView>
</LinearLayout
I am not sure where is the problem actually
If you want to add buttons vertically then just use LinearLayout instead of RelativeLayout in your body.
int iNumberOfButtons = productTypeList.size();
Button[] dynamicButtons = new Button[iNumberOfButtons];
LinearLayout.LayoutParams paramsButton = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
for (int i = 0; i < iNumberOfButtons; i++) {
ProductType productType = productTypeList.get(i);
dynamicButtons[i] = new Button(getActivity());
dynamicButtons[i].setText(productType.getTitleString());
dynamicButtons[i].setId(i);
dynamicButtons[i].setTextSize(15.0f);
dynamicButtons[i].setOnClickListener(this);
dynamicButtons[i].setLayoutParams(paramsButton);
dynamicButtonsLinearLayout.addView(dynamicButtons[i]); // dynamicButtonsLinearLayout is the container of the buttons
}
Use linear layout instead of Relative layout. If you need to add multiple button dynamically use RecyclerView based on Item position you can do whatever you need
LayoutParams lparams = new LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
Button bt=new Button(this);
bt.setLayoutParams(lparams);
this.m_vwJokeLayout.addView(bt);
you used relative layout . with that bottons cover eachother . use linearlayout as parent container . but if you want use relative layout you should store previous buttons id and set new buttons below property like this :
RelativeLayout.LayoutParams relativeParams = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
relativeParams.addRule(RelativeLayout.BELOW, idOfTheViewBelow);

Adding custom relative layout to one single liner layout

I have made following relative layout in an xml file lets say add_relative_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:id="#+id/addAccountLinearLayout">
</LinearLayout>
Above is the main layout in which i want to add copies of below Code file.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/UIContainer"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#android:color/white" >
<TextView
android:id="#+id/amountLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_marginLeft="5dp"
android:text="Amount"
android:textColor="#android:color/black"
android:textStyle="bold" />
<EditText
android:id="#+id/amount"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="5dp" >
</EditText>
I have another android xml file named as Show_all.xml. It is a linear layout xml
I want to add this relative layout above as many times as i want in this show_all layout
currently i am using this code
private void callOnCreate()
{
linear = (LinearLayout) findViewById(R.id.addAccountLinearLayout); // the layout in which i want to make dynamic copies of this layout.
layout = (RelativeLayout) findViewById(R.layout.ui_relative_layout_style); // name of xml File of above code.
for (int i=0; i < 4; i++)
{
Account account = accountArray.get(i);
linear.addView(layout, i);
}
}
I am getting Null point exception. Please tell me what to do .
Best Regards
Hello Umar I have no idea how you can use xml layout to add Dynamically But you can use Below Code to get Your Required thing add in to LinearLayout
public RelativeLayout createViewTOAdd(){
lp=new RelativeLayout.LayoutParams(android.widget.RelativeLayout.LayoutParams.FILL_PARENT,android.widget.RelativeLayout.LayoutParams.WRAP_CONTENT);
RelativeLayout mRelativeLayout=new RelativeLayout(this);
mRelativeLayout.setBackgroundColor(Color.WHITE);
TextView mTextView=new TextView(this);
RelativeLayout.LayoutParams Textview_lp=new RelativeLayout.LayoutParams(android.widget.RelativeLayout.LayoutParams.WRAP_CONTENT,android.widget.RelativeLayout.LayoutParams.WRAP_CONTENT);
mTextView.setText("Amout");
Textview_lp.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
Textview_lp.addRule(RelativeLayout.CENTER_VERTICAL);
Textview_lp.leftMargin=10;
mTextView.setTextColor(Color.BLACK);
mTextView.setTextAppearance(this, R.style.TextStyle);
//mTextView.setLayoutParams(Textview_lp);
EditText mEditText=new EditText(this);
RelativeLayout.LayoutParams EditText_param=new RelativeLayout.LayoutParams(android.widget.RelativeLayout.LayoutParams.WRAP_CONTENT,android.widget.RelativeLayout.LayoutParams.WRAP_CONTENT);
EditText_param.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
EditText_param.addRule(RelativeLayout.CENTER_VERTICAL);
EditText_param.rightMargin=10;
//mEditText.setLayoutParams(EditText_param);
//mRelativeLayout.addView(mTextView, 0);
//mRelativeLayout.addView(mEditText, 1);
//mRelativeLayout.addView(mTextView);
//mRelativeLayout.addView(mEditText);
mRelativeLayout.addView(mTextView, Textview_lp);
mRelativeLayout.addView(mEditText, EditText_param);
return mRelativeLayout;
}
Now How to add View in to LinearLayout is Below
mLinearLayout=(LinearLayout)findViewById(R.id.mainLinearView);
mLinearLayout.removeAllViews();
for(int i=0;i<4;i++){
mLinearLayout.addView(createViewTOAdd(), i);
}
Hey your are using findViewById to get the instance of relativelayout which is not available in your current layout show_all.xml .thats why you are getting null pointer exception.So create separate layout for that specific relativelayout and names that xml layout file as UIContianer then try to use below code
private void callOnCreate()
{
linear = (LinearLayout) findViewById(R.id.addAccountLinearLayout); // the layout in which i want to make dynamic copies of this layout.
LayoutInflater inflater = (LayoutInflater)getSystemService(LAYOUT_INFLATER_SERVICE);
View vi = inflater.inflate(R.layout.ui_relative_layout_style, null);
for (int i=0; i < 4; i++)
{
Account account = accountArray.get(i);
linear.addView(vi, i);
}
}

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