This is my XML file for creating a horizontal gridview:
<?xml version="1.0" encoding="utf-8"?>
<HorizontalScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/change_frame_scrollview"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="match_parent" >
<GridView
android:id="#+id/change_frame_gridview"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:stretchMode="columnWidth"
android:scrollbars="horizontal"
android:padding="10dp" />
</FrameLayout>
</HorizontalScrollView>
And here is how to implement in Activity:
gridView = (GridView) v.findViewById(R.id.change_frame_gridview);
gridView.setAdapter(adapter);
gridView.setNumColumns(adapter.getCount());
gridView.setOnItemClickListener(this);
FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(
(adapter.getItemWidth() + FrameThumbnailAdapter.ITEM_MARGIN) * adapter.getCount(),
LayoutParams.WRAP_CONTENT);
gridView.setLayoutParams(params);
gridView.requestFocus();
gridView.setSelection(10);
adapter.notifyDataSetChanged();
But the selection(10) does not work.
Related
I can't scroll my list view to the end. It seems to be stuck halfway at the last element(Neptune).
ListView is stuck at the last element as shown in the picture.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
tools:context=".MainActivity">
<include
layout="#layout/app_bar"
android:id="#+id/app_bar"
app:layout_constraintBottom_toTopOf="#+id/listView"
/>
<ListView
android:id="#+id/listView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#+id/app_bar"
/>
</android.support.constraint.ConstraintLayout>
MainActivity.java
ListView listView = findViewById(R.id.listView);
String[] planetsArray = getResources().getStringArray(R.array.planet_list);
ArrayAdapter<String> arrayadapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, planetsArray){
#Override
public View getView(int position, View convertView, ViewGroup parent){
View view = super.getView(position,convertView,parent);
ViewGroup.LayoutParams layoutparams = view.getLayoutParams();
//Define your height here.
layoutparams.height = 300;
view.setLayoutParams(layoutparams);
return view;
}
};
listView.setAdapter(arrayadapter);
Result:
In activity_main.xml try changing android:layout_height="0dp" to android:layout_height="wrap_content", it will still be updated to the programmatically set hight of 300, but it will not be defined to 0dp, which should help with the problem.
change your android:layout_height="0dp" to android:layout_height="wrap_content"
or set layout_weight="1"
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
tools:context=".MainActivity">
<include
layout="#layout/app_bar"
android:id="#+id/app_bar"
app:layout_constraintBottom_toTopOf="#+id/listView"
/>
<ListView
android:id="#+id/listView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#+id/app_bar"
/>
</android.support.constraint.ConstraintLayout>
http://is4.mzstatic.com/image/thumb/Purple1/v4/8f/96/0e/8f960eda-413d-c1c2-fcf0-178e9206fbe2/source/392x696bb.jpg
I want to make an empty gridview like the image above. I created grid view in xml:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:custom="http://schemas.android.com/apk/res-auto"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF"
android:orientation="vertical" >
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/gridview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:columnWidth="90dp"
android:numColumns="90"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:stretchMode="columnWidth"
android:gravity="center"
android:background="#000"
/>
</FrameLayout>
Then I created grid view object in my activity
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_painting);
GridView gridView = (GridView) findViewById(R.id.gridview);
}
But I can't see the borders. Also I can't see any cell and can't click as expected.
How can I create a grid view with empty cells, also with borders.
Thanks in advance.
I am adding views dynamically like this:
LayoutInflater layoutInflater =
(LayoutInflater) getActivity().getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View addView = layoutInflater.inflate(R.layout.dynamicabout, null);
TextView textOut = (TextView)addView.findViewById(R.id.aboutcontent);
textOut.setText(strings.get(index));
((ViewGroup) v).addView(addView);
However, once we get to the bottom of the screen and beyond, there's no scrollbar.
I tried using the ScrollView, but that doesn't do anything.
dynamicabout.xml
<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="wrap_content">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/aboutcontent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:autoLink="all"/>
</LinearLayout>
</ScrollView>
</RelativeLayout>
about.xml
<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="wrap_content"
android:paddingLeft="#dimen/stdpadding"
android:paddingRight="#dimen/stdpadding"
android:paddingBottom="#dimen/stdpadding"
android:paddingTop="#dimen/stdpadding"
android:orientation="vertical" >
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
</ScrollView>
</LinearLayout>
What you need to do is you need to have Parent and Child view. Add child to the Parent. Parent is LinearLayout in ScrollView in dynamicabout.xml. Child is about XML. Inflate about XML on the runtime and Add it into Parent View (LinearLayout in ScrollView).
P.S. > Set an ID for the Parent Layout in order to be able to add views inside it, as far as I see it doesn't have ID.
<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="wrap_content"
android:paddingLeft="#dimen/stdpadding"
android:paddingRight="#dimen/stdpadding"
android:paddingBottom="#dimen/stdpadding"
android:paddingTop="#dimen/stdpadding"
android:orientation="vertical" >
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/linear
android:layout_width="match_parent"
android:layout_height="wrap_content">
</ScrollView>
</LinearLayout>
////////////////////////////////////////////////
<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="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/aboutcontent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:autoLink="all"/>
</LinearLayout>
</RelativeLayout>
//////////////////////////////////////////////////////////////
LinearLayout linear=(LinearLayout)findviewbyId(R.id.linear);
LayoutInflater layoutInflater =
(LayoutInflater) getActivity().getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View addView = layoutInflater.inflate(R.layout.dynamicabout, null);
TextView textOut = (TextView)addView.findViewById(R.id.aboutcontent);
textOut.setText(strings.get(index));
linearview.addView(addView);
please chk this code:
I try to make a ScrollView to act like a ListView. So every row will be a TextView added dynamically. but the program crashes. I have a ScrollView inside a LinearLayout. What i do wrong? Thanks.
Here is my code
scroll = (ScrollView)findViewById(R.id.scrollView1);
layout = (LinearLayout) findViewById(R.id.LinearLayout1);
layout.setBackgroundColor(Color.TRANSPARENT);
TextView[] tx = new TextView[10];
for (int i = 0; i < 10; i++) {
tx[i] = new TextView(HelloWorldActivity.this);
tx[i].setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
tx[i].setText("This is the textviewNo" + i);
layout.addView(tx[i]);
}
scroll.addView(layout);
XML:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center_horizontal"
android:orientation="vertical" >
<TextView
android:id="#+id/timeflag"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="50sp"
android:gravity="center"/>
<Button
android:id="#+id/pause"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_alignParentLeft="true"
android:layout_below="#+id/timeflag"
android:layout_marginTop="37dp"
android:text="Start" />
<LinearLayout
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_below="#+id/pause"
android:orientation="vertical" >
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ScrollView>
</LinearLayout>
</RelativeLayout>
A scrollView Can only have one child. If you try to add more than 1 child to the scroll view then it will crash. You should have the LinearLayout inside of the scrollview and then dynamically add textViews to the linear layout.
You are trying to add LinearLayout1 as its own child's child (being your own grandfather, is a confusing notion).
Change you XML around like this:
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_below="#+id/pause"
>
<LinearLayout
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
</LinearLayout>
</ScrollView>
You cannot add views to a scrollview. You can only add them to a viewgroup, like linear or relativelayout.
It is not exactly clear what you are trying to achieve, but what is wrong with using a listview for this? You could set a max height on the listview. Or you could try wdziemia's suggestion
I have a LinearLayout in main.xml:
<?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="fill_parent"
android:orientation="vertical"
android:id="#+id/mainLayout" >
</LinearLayout>
I have made another XML file, called item_box.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/item_bg"
android:gravity="right" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/icon" />
<CheckBox
android:id="#+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginRight="20dp"
android:text="#string/item1"
android:textSize="30dp" />
<TextView
android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginRight="20dp"
android:gravity="right"
android:text="#string/number1"
android:textColor="#color/number_bg"
android:textSize="30dp" />
</LinearLayout>
Basically, what I want to do from the code (programmatically), is add a couple item_box.xml into the main.xml. How can I accomplish this?
LinearLayout mainLayout = (LinearLayout)findViewById(R.id.main);
LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View itemBox = inflater.inflate(R.layout.item_box);
mainLayout.addView(itemBox);
try this linearlayout inside another linearlayout add id to linearlayout layout1.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/firstlayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
</LinearLayout>
in oncreate() call
LinearLayout firstlayout=(LinearLayout)findviewbyId(R.id.firstlayout);
LinearLayout secondlayoout=(LinearLayout)this.getLayoutInflater().inflate(R.layout.layout2,null); //inflating view from xml
TextView btn1=(TextView)secondlayoout.findviewbyId(R.id.button1);
btn1.settext("TEST");
firstlayout.addview(secondlayoout);
You are getting a Nullpointer because linearLayout1 is not in mainLayout. You need to inflate your view first and then add it. You should read this question I think it will help you.
Use LayoutInflater:
LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View itemBox = inflater.inflate(R.layout.item_box);