I have been looking these past two days on questions regarding setting the weight of a layout or a group of layouts programmatically.
all the answers i found are almost the same so that means i know what code no to use but i do not seem to understand how to assign the float attribute. in the following code.
LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT,
1.0f
);
YOUR_VIEW.setLayoutParams(param);
would someone please give me an example of how to assign the weights of two TextView with a weight sum of 3???
It depends on your view if you want to split the view horizontally between them you can use something like this.
TextView secondTV = findViewById(R.id.secondTextView);
TextView firstTV = findViewById(R.id.firstTextView);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(0, ViewGroup.LayoutParams.MATCH_PARENT, 3);
LinearLayout.LayoutParams layoutParams1 = new LinearLayout.LayoutParams(0, ViewGroup.LayoutParams.MATCH_PARENT, 1);
firstTV.setLayoutParams(layoutParams);
secondTV.setLayoutParams(layoutParams1);
And your layout looks like this
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<TextView
android:id="#+id/firstTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Hello" />
<TextView
android:id="#+id/secondTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/icon"
android:text="Hello" />
</LinearLayout>
but if you want to split the view vertically you can use something like this.
TextView secondTV = findViewById(R.id.secondTextView);
TextView firstTV = findViewById(R.id.firstTextView);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 0, 3);
LinearLayout.LayoutParams layoutParams1 = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 0, 1);
firstTV.setLayoutParams(layoutParams);
secondTV.setLayoutParams(layoutParams1);
And your layout looks like this
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/firstTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Hello" />
<TextView
android:id="#+id/secondTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/icon"
android:text="Hello" />
</LinearLayout>
Related
This is my xml created file for a layout and it displays as I want it to.
<?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="120dp"
android:background="#android:drawable/dialog_holo_light_frame">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<ImageView
android:layout_width="75dp"
android:layout_height="75dp"
android:id="#+id/imageSectionCustomRowL"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="10dp"
android:paddingLeft="10dp"
android:id="#+id/titleCustomRowL"
android:paddingRight="10dp"
android:textSize="30sp"
android:textColor="#000000"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="#959595"
android:paddingBottom="10dp"
android:paddingTop="5dp"
android:id="#+id/subTitleCustomRowL"
android:paddingLeft="20dp"
android:paddingRight="10dp"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
And this is more or less the same thing but created dynamically via code
LinearLayout parentLL = (LinearLayout)findViewById(R.id.newsMainPopulationLL);
LinearLayout parentRowLL = new LinearLayout(news.this);
parentRowLL.setOrientation(LinearLayout.VERTICAL);
Drawable bg = news.this.getResources().getDrawable(android.R.drawable.dialog_holo_light_frame);
//Drawable bbg = getDrawable(android.R.drawable.dialog_holo_light_frame);
parentRowLL.setBackgroundResource(android.R.drawable.dialog_holo_light_frame);
parentRowLL.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, convertDpToPx(120)));
LinearLayout parentRowChildHLL = new LinearLayout(news.this);
parentRowChildHLL.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
parentRowChildHLL.setOrientation(LinearLayout.HORIZONTAL);
LinearLayout containerForPic = new LinearLayout(news.this);
containerForPic.setLayoutParams(new LinearLayout.LayoutParams(convertDpToPx(75), convertDpToPx(75)));
containerForPic.setOrientation(LinearLayout.VERTICAL);
ImageView picInList = new ImageView(news.this);
picInList.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
LinearLayout contentVerticalLL = new LinearLayout(news.this);
contentVerticalLL.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
contentVerticalLL.setOrientation(LinearLayout.VERTICAL);
TextView headingTV = new TextView(news.this);
headingTV.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
headingTV.setPadding(convertDpToPx(10), convertDpToPx(10), convertDpToPx(10), 0);
headingTV.setTextColor(Color.parseColor("#000000"));
headingTV.setTextSize(30);
TextView contentTV = new TextView(news.this);
contentTV.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
contentTV.setPadding(convertDpToPx(10), convertDpToPx(5), convertDpToPx(10), convertDpToPx(10));
contentTV.setTextColor(Color.parseColor("#959595"));
contentVerticalLL.addView(headingTV);
contentVerticalLL.addView(contentTV);
parentRowChildHLL.addView(contentVerticalLL);
containerForPic.addView(picInList);
parentRowChildHLL.addView(containerForPic);
parentRowLL.addView(parentRowChildHLL);
parentLL.addView(parentRowLL);
Here convertDptoPx is a int() that works properly. However for some reason the Linear layout parentRowChildLL even though set to LinearLayout.HORIZONTAL for orientation for some reason displays vertically (According to the layout boundaries I see using the developer options setting)
Is there something basic I'm missing out yet? When I see the boundaries I have 3 rows. And also I tried encasing my image view in the layout because otherwise it is not even visible.
Thank You.
I create some views programmatically, but on some devices they are displayed wrong. I have Layout in which i programmatically add spinner. This is my xml:
container - it's layout where i create spinner (programmatically)
spinnerL - here i add spinner
<LinearLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:orientation="horizontal"
android:background="#26ffffff"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/spinnerL"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_weight="0.2"
android:layout_centerHorizontal="true" />
<RelativeLayout
android:id="#+id/spinnerOpen"
android:layout_width="match_parent"
android:layout_marginRight="5dp"
android:layout_weight="0.8"
android:layout_height="match_parent">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/spinnerImage"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
</LinearLayout>
Here i create and add the spinner:
//here i set margins
View linearLayoutG = convertView.findViewById(R.id.container);
linearLayoutG.setBackgroundColor(Color.parseColor("#26ffffff"));
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
layoutParams.setMargins(10, 0, 10, 30);
linearLayoutG.setLayoutParams(layoutParams);
//here i create spinner
View linearLayout = convertView.findViewById(R.id.spinnerL);
final Spinner spinner = new Spinner(context);
spinner.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
//code
((LinearLayout) linearLayout).addView(spinner);
(sorry about links, i don't have 15 reputation)
Result on android 4.0.1
Result on android 5+
If i use static size, like this:
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT, 120);
Here's what happens
Result on android 4.0.1
Result on android 5+
Well as i can see in your code :
spinner.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
you are setting the height to MATCH_PARENT. I have no idea why it is working on 4.0.1 but change your code to this:
spinner.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
How i can display two textview side by side in Java ?
I succeeded to do in xml !
My code :
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/label"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="12dip"
android:layout_marginRight="10dp"
android:layout_alignParentLeft="true"
android:textColor="#ffffff" />
<TextView
android:id="#+id/value"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="12dip"
android:layout_alignParentRight="true"
android:textColor="#ffffff" />
</RelativeLayout>
Make a LinearLayout in my activity_layout.
LinearLayout lm=(LinearLayout) findViewById(R.id.Linearlayout1);
Make LinearLayout of type horizontal, dynamically.
LinearLayout llh=new LinearLayout(context);
llm.setOrientation(LinearLayout.HORIZONTAL);
Then created two TextView dynamically
TextView tv1=new TextView(context);
TextView tv2=new TextView(context);
finally add these two TextView's to the horizontal LinearLayout (that we created dynamically) and later the same layout to the xml layout.
llh.addView(tv1);
llh.addView(tv2);
lm.addView(llh);
I hope it was helpful.
Try this,
Java Code,
layout = (LinearLayout)findViewById(R.id.mainLay);
TextView tv1 = new TextView(ActivityName.this);
tv1.setText("TextView 1");
LinearLayout.LayoutParams childParam1 = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT);
childParam1.weight = 0.5f;
tv1.setLayoutParams(childParam1);
TextView tv2 = new TextView(ActivityName.this);
tv2.setText("TextView 2");
LinearLayout.LayoutParams childParam2 = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
childParam1.weight = 0.5f;
tv2.setLayoutParams(childParam2);
layout.addView(tv1);
layout.addView(tv2);
and xml code,
<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="match_parent"
tools:context=".MainActivity">
<LinearLayout
android:weightSum="1"
android:id="#+id/mainLay"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"></LinearLayout>
</LinearLayout>
This should work.
First Solution:
use online converter
[http://www.xmltojava.com/][1]
Second Solution:
inflate your layout
LayoutInflater mInflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
View layoutView = mInflater.inflate(R.rowLayout, null);
TextView tvOne=(TextView) layoutView.findViewById(R.id.tvOne);
this is what I try to do
final LinearLayout ll = (LinearLayout) findViewById(R.id.container_LV);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams
(
RelativeLayout.LayoutParams.MATCH_PARENT,
RelativeLayout.LayoutParams.MATCH_PARENT
);
//ll.setOrientation(orientation);
// params.addRule(RelativeLayout.ALIGN_PARENT_RIGHT,0);
LinearLayout llh=new LinearLayout(getApplicationContext());
ll.setOrientation(LinearLayout.HORIZONTAL);
for (int i = 0; i < fields.length(); i++)
{
final TextView txtLabel = new TextView(getApplicationContext());
final TextView txtValue = new TextView(getApplicationContext());
jsonLabel = fields.getJSONObject(i).getString(TAG_LABEL) ; //+ "\n";
jsonValue = fields.getJSONObject(i).getString(TAG_VALUE) ; //+ "\n";
//txtLabel.setBackgroundColor(Color.YELLOW);
//txtValue.setBackgroundColor(Color.YELLOW);
//txtLabel.setWidth(pixels);
txtLabel.setLayoutParams(params);
txtValue.setLayoutParams(params);
txtValue.setGravity(Gravity.RIGHT);
txtLabel.setGravity(Gravity.LEFT);
//params.addRule(RelativeLayout.ALIGN_PARENT_RIGHT,0);
txtLabel.setText(jsonLabel);
txtValue.setText(jsonValue);
txtLabel.setTextColor(Color.WHITE);
txtValue.setTextColor(Color.WHITE);
//txtLabel.
llh.addView(txtLabel);
llh.addView(txtValue);
}
ll.addView(llh);
The key is to use android:layout_weight only after setting android:layout_width to "0dp", try this
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/label"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textSize="12dip"
android:layout_marginRight="10dp"
android:layout_alignParentLeft="true"
android:textColor="#ffffff" />
<TextView
android:id="#+id/value"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textSize="12dip"
android:layout_alignParentRight="true"
android:textColor="#ffffff" />
</RelativeLayout>
I have an Android app with this portion of main activity:
<LinearLayout
android:id="#+id/vistaAnni"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/TextView02"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight=".1"
android:text="1998" />
<CheckBox
android:id="#+id/CheckBox02"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight=".1" />
<CheckBox
android:id="#+id/CheckBox07"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight=".1" />
On the main activity class, I need another linear layout with other checks box.
LinearLayout myView = (LinearLayout) findViewById(R.id.vistaAnni);
Log.v("blah", "Crea tabella dinamica");
for(int i = 0; i < anni.size();i++){
Log.v("blah", "Creo colonna: "+anni.get(i));
LinearLayout newLine = new LinearLayout(getApplicationContext());
newLine.setOrientation(1);
newLine.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT));
TextView testo = new TextView(getApplicationContext());
testo.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, 0, .1f));
testo.setText(anni.get(i));
newLine.addView(testo);
CheckBox check1c = new CheckBox(getApplicationContext());
check1c.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, 0, .1f));
newLine.addView(check1c);
CheckBox check2c = new CheckBox(getApplicationContext());
check2c.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, 0, .1f));
newLine.addView(check2c);
myView.addView(newLine);
The system creates the box and the text fine, but with different colors and hardly visibility.
But I haven't customized it over activity.xml it or over activity.java. Why this change?
This is a sreen of app:
I have change all:
CheckBox check1c = new CheckBox(getApplicationContext());
with:
CheckBox check1c = new CheckBox(this);
as suggested by Luksprog and works.
I want to add EditText to canvas in specific coordinates.
Something like this :
I tried to use code :
LinearLayout layout = new LinearLayout(context);
EditText textView = new EditText(context);
textView.setVisibility(View.VISIBLE);
textView.setText("Hello world");
layout.addView(textView);
layout.measure(canvas.getWidth(), canvas.getHeight());
layout.layout(0, 0, canvas.getWidth(), canvas.getHeight());
layout.setGravity(Gravity.BOTTOM);
layout.draw(canvas);
But this EditText wasn't show keyboard on click. Can you help me?
Assuming you really need to draw it on a canvas...
Create a new canvaslayout.xml inside your res/layout folder.
<?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"
android:orientation="vertical" >
<EditText
android:id="#+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:ems="5" >
<requestFocus />
</EditText>
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/editText1"
android:layout_toRightOf="#+id/editText1"
android:text="Edit Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
</RelativeLayout>
Change code too
LinearLayout layout = findViewById(R.layout.canvaslayout);
//LinearLayout layout = youractivity.findViewById(R.layout.canvasLayout);
layout.draw(canvas);
Programmaticly:
If you don't want to use XML (I don't see why not) you can use this method. You change the linear layout to a relative layout and use something like this to put views to the right off another view.
RelativeLayout.LayoutParams relativeLayoutParams=
new RelativeLayout.LayoutParams((RelativeLayout.LayoutParams.WRAP_CONTENT),(RelativeLayout.LayoutParams.WRAP_CONTENT));//create params for new textview
relativeLayoutParams.addRule(RelativeLayout.RIGHT_OF, textView.getId());//to align the textview side by side