This question already has answers here:
Adding child views to Relative Layout
(2 answers)
Closed 7 years ago.
I have a background image:
android:background="#drawable/bg">
and a TextView:
final TextView theTimer = new TextView(this);
If I use setContentView I can only place one of them on the screen.
How can I fit them both in one activity?
Do something like this -
my_layout.xml file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/ll"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="#drawable/bg">
</LinearLayout>
Activity code
setContentView(R.layout.my_layout);
final TextView theTimer = new TextView(this);
LinearLayout ll = (LinearLayout)findViewByID(R.id.ll);
ll.addView(theTimer);
Create
RelativeLayout create ImageView
RelativeLayout layout = new RelativeLayout(this);
ImageView img = new ImageView(this);
img.setImageResource(R.drawable.your_drawable);
TextView tv1 = new TextView(this);
tv1.setText("B");
RelativeLayout.LayoutParams layoutParams =new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT, RelativeLayout.TRUE);
tv1.setLayoutParams(layoutParams);
layout.addView(img);
layout.addView(tv1);
setContentView(layout);
Related
I want to align a TextView above an EditText. The following code is working well when the TextView is not higher than the space between the Top Margin of the window (red line) and the EditText (green line), like in the screenshot.
The problem occurs when the TextView has more lines than in the screenshot: it just "overruns" the EditText, but I want to keep the EditText in foreground.
In other words: I would like to place the TextView's bottom margin onto the green line and let it grow towards the red line, in order to maintain the visibility of the EditText.
// LINEAR LAYOUT
LinearLayout layout = new LinearLayout(getApplicationContext());
layout.setOrientation(LinearLayout.VERTICAL);
setContentView(layout);
// TEXTVIEW
// how to set bottom margins programmatically?
layout.addView(tv);
// EDITTEXT
// place the EditText to the bottom of the layout, working well
et.setGravity(Gravity.BOTTOM);
et.setInputType(InputType.TYPE_CLASS_TEXT);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
params.gravity = Gravity.BOTTOM;
et.setLayoutParams(params);
layout.addView(et);
This should do it for you:
// LINEAR LAYOUT
LinearLayout layout = new LinearLayout(getApplicationContext());
layout.setOrientation(LinearLayout.VERTICAL);
setContentView(layout);
// TEXTVIEW
LinearLayout.LayoutParams paramstv = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT,1f);
tv.setLayoutParams(paramstv);
layout.addView(tv);
// EDITTEXT
et.setGravity(Gravity.BOTTOM);
et.setInputType(InputType.TYPE_CLASS_TEXT);
LinearLayout.LayoutParams etparams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT,8f);
etparams.gravity = Gravity.BOTTOM;
et.setLayoutParams(etparams);
layout.addView(et);
I guess the key is really to wrap both the EditText and TextView into LayoutParams. Probably you have to adjust the weights.
If this one doesn't work, try to create your layout with an XML file (the handling there is easier).
Try using the relative layout instead and set the edittext at the parent's bottom..
In case you don't want to switch to relative layout then try declaring edit text before the text view..
You can set the property of EditText type to textMultiline.
As you're using LinearLayout , set weight for your views
LinearLayout.LayoutParams paramTextView = new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT, 1.0f);
tv.setlayoutParams(paramTextView);
LinearLayout.LayoutParams paramEditText = new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT, 3.0f);
et.setlayoutParams(paramEditText);
This shall give you the result you expect
This below xml code can solve your problem...
<RelativeLayout
android:layout_height="match_parent"
android:layout_width="match_parent">
<SrollView
android:layout_height="match_parent"
android:layout_width="match_parent"
android:layout_above="#+id/edittext_id"
android:layout_margin="7dp">
<TextView
android:id="#+id/text_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</SrollView>
<EditText
android:id="#+id/edittext_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:layout_alignParentBottom="true"/>
</RelativeLayout>
In my project i managed to display the database in the form of rows and columns of edit Texts and text Views.But the as the number of rows and columns increase it is not possible to view the added data , they dont fit into the screen.
so i think i needed a horizontal scrollview and a vertical scrollview for viewing entire rows and columns. Below
is my code kindly help me how to achieve this.
Please do help me thanks in advance
xml code is
<?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">
<TableLayout
android:layout_width="wrap_content"
android:stretchColumns="0,1,2,3,4,5"
android:id="#+id/maintable"
android:layout_height="wrap_content"
android:layout_weight="1.0">
</TableLayout>
</LinearLayout>
The following is the code for page where i wanna display my rows and columns
public class ViewActivity extends Activity {
EditText col1;
EditText col2;
TextView Id;
EditText col4;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view);
ScrollView sv = new ScrollView(this);
HorizontalScrollView hs =new HorizontalScrollView(this);
TableLayout tl = (TableLayout) findViewById(R.id.maintable);
//CREATING A LIST OF HEADINGS
TableRow tr1 = new TableRow(this);
tr1.setLayoutParams(new LayoutParams( LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT ));
Id = new TextView(this);
Id.setText("COL1");
tr1.addView(Id);
Id = new TextView(this);
Id.setText("COL2");
tr1.addView(Id);
Id = new TextView(this);
Id.setText("COL3");
tr1.addView(Id);
Id = new TextView(this);
Id.setText("Rssi");
tr1.addView(COL4);
Id = new TextView(this);
Id.setText("Delete");
tr1.addView(COL5);
Id = new TextView(this);
Id.setText("Update");
tr1.addView(COL6);
hs.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT));
tl.addView(tr1,new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
// CREATING ROWS AND COLUMNS DYNAMICALLY
final DBclass entry = new DBclass(ViewActivity.this);
entry.open();
Cursor c = entry.getAllRecords();
int count =0;
if(c.moveToFirst()){
do{
TableRow tr = new TableRow(this);
tr.setId(count);
tr.setLayoutParams(new LayoutParams( LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT ));
/* CODE FOR
COLUMNS DISPLAYED IN THE FORM OF
EDITTEXTS AND TEXTVIEWS
*/
tl.addView(tr, new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT));
count++;
}while(c.moveToNext());
}
}
I'm fairly sure you could simply put your TableLayout inside a ScrollView to solve this problem. No need to fiddle with adding Views programatically, just predefine it in the XML layout resource. Like this:
<?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">
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TableLayout
android:layout_width="wrap_content"
android:stretchColumns="0,1,2,3,4,5"
android:id="#+id/maintable"
android:layout_height="wrap_content"
android:layout_weight="1.0">
</TableLayout>
</ScrollView>
</LinearLayout>
Keep in mind ScrollView is vertical, so you'd need to add a HorizontalScrollView in there to add horizontal scrolling as well.
I have a hierarchy that is like this:
LinearLayout(horizontal)
ImageView
LinearLayout(vertical)
TextView
TextView
TextView
TextView
I want to be able to add the hierarchy above through iteration as long as there is data that could be obtained from the database(using Parse)
I have tried putting up the ImageView and LinearLayout under the parent LinearLayout but it doesn't seem to work. Here is my code in MainActivity.Java:
LinearLayout LL_Outer = (LinearLayout) findViewById(R.id.new_linearLayoutOuter);
LL_Outer.setOrientation(LinearLayout.VERTICAL); // set orientation
LL_Outer.setBackgroundColor(color.white); // set background
// set Layout_Width and Layout_Height
LinearLayout.LayoutParams layoutForOuter = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
LL_Outer.setLayoutParams(layoutForOuter);
LinearLayout LL_Inner = (LinearLayout) findViewById(R.id.new_linearLayoutInner);
LL_Inner.setOrientation(LinearLayout.HORIZONTAL);
LL_Inner.setBackgroundColor(color.white);
LinearLayout.LayoutParams layoutForInner = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
LL_Inner.setLayoutParams(layoutForInner);
//LL_Outer.addView(LL_Inner);
ImageView IV = (ImageView) findViewById(R.id.new_imageViewPP);
//IV.getLayoutParams().height = 55;
//IV.getLayoutParams().width = 55;
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
params.setMargins(14, 12, 0, 0);
params.height = 55;
params.weight = 55;
IV.setBackgroundColor(color.black);
IV.setLayoutParams(params);
LL_Inner.addView(IV);
LL_Outer.addView(LL_Inner);
I don't know where I went wrong as my code did not prompt any error. Please help.
EDIT: I have edited the Orientations accordingly and when I run the app, it stops working. And prompts an error in LogCat saying "The specified child already has a parent. You must call removeView() on the child's parent first.
Here's my XML:
<LinearLayout
android:id="#+id/new_linearLayoutOuter"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:orientation="horizontal" >
<ImageView
android:id="#+id/new_imageViewPP"
android:layout_width="55dp"
android:layout_height="55dp"
android:layout_marginLeft="14dp"
android:layout_marginTop="12dp"
android:background="#color/black"
android:contentDescription="#string/pp" />
<LinearLayout
android:id="#+id/new_linearLayoutInner"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:orientation="vertical" >
<TextView
android:id="#+id/new_textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/movie_title"
android:paddingTop="10dp"
android:paddingLeft="7dp"
android:textSize="15sp" /> <!-- Title of the movie -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/review_by"
android:paddingTop="3dp"
android:paddingLeft="7dp"
android:textSize="12sp" /> <!-- By -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/movie_stars"
android:paddingTop="3dp"
android:paddingLeft="7dp"
android:textSize="12sp" /> <!-- Rating and date -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sample_string"
android:maxLines="5"
android:scrollbars="vertical"
android:paddingTop="10dp"
android:paddingLeft="7dp"
android:textSize="12sp"
android:layout_gravity="center_vertical|right" /> <!-- Review content -->
</LinearLayout>
</LinearLayout>
You want that hierarchy programmatically.
- LinearLayout(horizontal)
- ImageView
- LinearLayout(vertical)
- TextView
- TextView
- TextView
- TextView
Ok lets start with Parent LinearLayout
LinearLayout parent = new LinearLayout(context);
parent.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
parent.setOrientation(LinearLayout.HORIZONTAL);
//children of parent linearlayout
ImageView iv = new ImageView(context);
LinearLayout layout2 = new LinearLayout(context);
layout2.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
layout2.setOrientation(LinearLayout.VERTICAL);
parent.addView(iv);
parent.addView(layout2);
//children of layout2 LinearLayout
TextView tv1 = new TextView(context);
TextView tv2 = new TextView(context);
TextView tv3 = new TextView(context);
TextView tv4 = new TextView(context);
layout2.addView(tv1);
layout2.addView(tv2);
layout2.addView(tv3);
layout2.addView(tv4);
And you are done :)
The problem is because the views are already added to the layout in the XML file. Then you findViewById (find them) and try to add them to the layout again. That is why the app crashes complaining that, view already has a parent and you can't add it again.
In the XML File LinearLayout already has child view. So there is not need to add them in code.
i suggest you to remove the xml file and just use full code on the java side. you can add the views programatically from the java side. this one from xtreemdeveloper but i change few line for the parent layout.
// remove this params set it up below
parent.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
// change the code above into
.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.MATCH_PARENT);
addContentView(parent,layoutParams);
// end of my change
it will look like this in full code =
LinearLayout parent = new LinearLayout(context);
// remove this params set it up below
parent.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
// change the code above into
.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.MATCH_PARENT);
addContentView(parent,layoutParams);
// end of my change
parent.setOrientation(LinearLayout.HORIZONTAL);
//children of parent linearlayout
ImageView iv = new ImageView(context);
LinearLayout layout2 = new LinearLayout(context);
layout2.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
layout2.setOrientation(LinearLayout.VERTICAL);
parent.addView(iv);
parent.addView(layout2);
//children of layout2 LinearLayout
TextView tv1 = new TextView(context);
TextView tv2 = new TextView(context);
TextView tv3 = new TextView(context);
TextView tv4 = new TextView(context);
layout2.addView(tv1);
layout2.addView(tv2);
layout2.addView(tv3);
layout2.addView(tv4);
I'm doing this Application where I dynamically change a ListView Size like in the following code:
RelativeLayout.LayoutParams mParam = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT);
sucs.setLayoutParams(myListView);
But when I do this, the ListView appears on top of the view. Is there any way where I can place it below the textview where it is supposed to be?
Thanks in advance!
EDITED:
Here´s my xml:
<TextView
android:id="#+id/sucursales_empresa"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#id/direccion_empresa"
android:background="#drawable/barra"
android:text="#string/sucursales"
android:visibility="gone" />
<ListView
android:id="#+id/sucursalesEmpresaList"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#id/sucursales_empresa"
android:cacheColorHint="#00000000"
android:visibility="gone" />
You have to add rule for listview LayoutParams like this..
RelativeLayout.LayoutParams params1 = new RelativeLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
params1.addRule(RelativeLayout.BELOW, R.id.textview);
listview.setLayoutParams(params1);
Try this
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, view.getId());
view.setLayoutParams(params);
ViewGroup parentView = (ViewGroup) findViewById(R.id.viewgroup);
parentView.addView(mylsitview);
I am creating my controls programmatically, based on JSON received from a server. One of the controls I need to create is a WebView that is horizontally centred on the screen. This is simple in xml layouts as shown below using the layout_gravity option. But how do you do this in code, the WebView unlike TextView does not have a setGravity(Gravity.HORIZONTAL_GRAVITY_MASK) method.
<?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:orientation="vertical" >
<WebView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"/>
</LinearLayout>
I would use a RelativeLayout, then you can use LayoutParams when adding the view:
RelativeLayout.LayoutParams layoutParams= new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT, 1);
relativeLayout.addView(yourWebView, layoutParams);
i use LinearLayout to show webview and setGravity.
LinearLayout linearLayout = new LinearLayout(this);
linearLayout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT));
linearLayout.setGravity(Gravity.CENTER);
WebView view = new WebView(this);
linearLayout.addView(view);
setContentView(linearLayout);
it help you.