I'm starting to learn a bit about android programming and watch plenty of guides/tutorials but there's one question none of the guides answer. I have a radio group of two buttons, simply like this(in the xml):
<RadioButton
android:id="#+id/radioButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="button1" />
<RadioButton
android:id="#+id/radioButton2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="button2" />
</RadioGroup>
The thing is that i want to show different textviews and different edittexts depending on what radio button is clicked, does anybody know where i can find a good example about this or might even wanna make an example yourself?
Thanks
You can simply wrap your textview's of type1 with some parent View like LinearLayout and so on for the other textview's types.
Than simply onCheckedChanged(RadioGroup arg0, int checkedId) show and hide the wrappers views.
The easiest way to do it is to just add everything to your main view. Then, depending on which is clicked, set the visibility of all the items you don't want to see to View.GONE, and those you do to View.INVISIBLE. Or if you have something more complex and the two views don't share a lot of variables, implementing them as fragments may make sense.
Related
I am trying to create a table/grid for some items within my app and I would like to have a border around each cell to divide the items up and have a coherent association of the setting with the item. This app will be used in an industrial setting where there may be people unfamiliar with Android that need to use this, thus trying to make it as easy as possible.
The table/grid will contain TextView, EditText, Spinner, and Button, and will also be scrollable (via ScrollView parent).
I read about the GridView and found that it (seems) to only be able to get items programmatically, please correct me if I am wrong. I felt that this was unnecessary since I know what items I want and where. Also, I have not tried adding items to a layout programmatically yet so I figured I would try the other options first. Also, the GridView documentation does not say one way or the other if border lines are automatically shown, or if you can have them shown at all.
I started with a TableLayout and was able to get everything except the border lines to work. I tried android:divider to get the lines but that didn't work. One thought I had was to create a bunch of TextViews with black backgrounds and ~2dp widths/heights to make my own border lines. This feels like a huge waste though. Then I also read the TableLayout documentation and found this: "TableLayout containers do not display border lines for their rows, columns, or cells."
I then tried the GridLayout and had the same results as the TableLayout. I tried padding and margins, neither worked. Also, the GridLayout documentation states: "The grid is composed of a set of infinitely thin lines that separate the viewing area into cells."
My questions are:
Is there an attirbute that I missed in TableLayout or GridLayout that will give me border lines via the xml?
If no, then will the GridView give me the lines I want?
Will I be able to add all the perviously mentioned items I want to the GridView?
I was actually able to achieve the desired look by setting the android:background="#000000" within the GridLayout view and then in the child items I set the android:background="#8CDD81" (just some green color) and combined with android:layout_margin="2dp" I was able to get the "grid" lines that I wanted. Thanks to CommonsWare though for getting me thinking in a new direction that turned into a solution.
EDIT:
This does not work quite as anticipated. You need the android:layout_alignLeft/Right which are only available via RelativeLayout in order to get just the right width on the child items. Haven't tested this yet using this idea, child items within RelativeLayout within GridLayout.
Is there an attirbute that I missed in TableLayout or GridLayout that will give me border lines via the xml?
No.
If no, then will the GridView give me the lines I want?
No.
Will I be able to add all the perviously mentioned items I want to the GridView?
Yes, though how well something like a Spinner will work, I can't say.
The simplest way, off the top of my head, to give you the lines you seek is to have each cell of the TableLayout or GridLayout be some container containing the widget(s) for that cell, where you give the container a background that is your line. A ShapeDrawable could be defined in XML for that background, which will be nicely resizeable based upon the actual requirements of the cell.
For future visiters this is how I did it with TableLayout:
table.xml
<TableLayout android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#969696">
<!-- table heading -->
<TableRow>
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Name"
android:background="#d2d2d2"
android:layout_margin="1dp"
/>
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Address"
android:background="#d2d2d2"
android:layout_margin="1dp"
/>
</TableRow>
<!-- table data -->
<TableRow>
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Ahtisham"
android:layout_margin="1dp"
android:background="#f1f1f1"
/>
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Kashmir"
android:layout_margin="1dp"
android:background="#f1f1f1"
/>
</TableRow>
</TableLayout>
I have a listview where each item has 2 images, one on the right and the other on the left. Between them there is a textview that is filled from data. If text is long then it can continue down but there is a lot of free space just as you can see in the image. I want to use this space also to display text. I have been looking around the web and I have seen things like this http://code.google.com/p/android-flowtextview/downloads/detail?name=FlowTextDemo.zip&can=2&q= but this is useless. I don't want to lose the control of the images because I need their click method. What is the best way to do it? I have thought that maybe I can put a textview between images and an other down and when the first is filled continue in the second one but how can I know how many letters can keep the first textview?
I don't understand why FlowTextView (that you linked to) won't work for you. It's derived from RelativeLayout and flows text around any child views. The child views can be your images, positioned as you normally would in a RelativeLayout. Their onClick methods should work just fine.
<com.pagesuite.flowtext.FlowTextView
android:id="#+id/tv"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/the_text >
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:onClick="onTopLeftClick"
android:src="#drawable/top_left_image" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:onClick="onTopRightClick"
android:src="#drawable/top_right_image" />
</com.pagesuite.flowtext.FlowTextView>
You will need to set the text in code, or else extend FlowTextView and define your own custom attribute(s) to do it from xml.
I'm trying to make an Android layout like the one below. I have a couple of questions:
1 - what is the element called that FB uses for posts? Ie, it doesn't look like a text view, but the element looks like it separates each post with a divider line. Also, the text style is different for a person's name and how long ago they posted. I'm looking to duplicate this (minus pictures) but I can't find the right UI elements.
What is the element called at the bottom? It's like a static menu. IE, it's the same as a menu but instead of pressing "menu" to access it, it's on the page at all times.
Finally, are there good tutorials/examples on how to make nice looking, professional layouts like the apps on the market? The tutorials that I've found on layouts are really basic. I'd like to understand what elements exist, what all of the attributes mean and see examples, etc. So far I'm only able to see the capabilities from other applications. I'd like to have a handbook or some type of some type of reference manual to go to.
For the "fancy" text views you can make a linear layout that hosts a <RelativeLayout>:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_weight="0">
<ImageView
android:id="#+id/userPhoto"
android:layout_height="64dip"
android:layout_width="64dip"
/>
<TextView
android:id="#+id/userFullName"
android:layout_height="25dp"
android:layout_width="fill_parent"
android:layout_marginLeft="70dp"
/>
</RelativeLayout>
Once you have a relative layout you can add different views inside of that to create a sort of customeized view.
As far as good examples I would look at this book. It's easy to understand and very helpful on such things.
I found a really helpful tutorial to solve a problem in ListView Row design a bit like yours. It goes a bit further explaining how to do Async Image loading but the first part should help you.
Also, I might be wrong (I am still a bit new to this) but I think the answer above lacks a TextView for the actual message besides the userName and the relative positions of the elements since it is a relative layout. Something like:
<TextView
android:id="#+id/userName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#id/userPhoto"
android:layout_toRightOf="#id/userPhoto"
android:textSize="17dp"
android:textStyle="bold" />
<!-- actual message -->
<TextView
android:id="#+id/message"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#id/userName"
android:layout_marginTop="1dip"
android:layout_toRightOf="#id/userPhoto"
android:textSize="15dp" />
The key in organizing a relative layout is:
android:layout_alignTop="#id/userPhoto"
android:layout_toRightOf="#id/userPhoto"
and
android:layout_below="#id/userName"
android:layout_toRightOf="#id/userPhoto"
I might be wrong but if it helps, great! Just adding my bit to the other answer.
Cheers
I am trying to create custom Check Box button image. After some research, I came across this code sample:
<CheckBox android:id="#+id/chkFav" android:layout_width="wrap_content"
android:layout_marginRight="0dp" android:button="#drawable/checkbox"
android:layout_height="wrap_content" android:clickable="true"/>
My query is how to actually implement android:button in code.
setButtonDrawable(Drawable d) is the way to go for. Make sure it is state-list drawable to respond to user interaction.
Step By step instruction
Have at least 2 images. (one for checked state and another for normal state)
Create xml drawable. http://developer.android.com/guide/topics/resources/drawable-resource.html#StateList
Use setButtonDrawable(R.drawable.your_xml_drawable).
**Notes-- there are many ways to achieve. This is just one simple way to do it.
I need to make a custom view as shown in diagram, which needs to functional like radio button, any of the options needs to be selected. How can I achieve this? I don`t want to use series of buttons.
You can use RadioGroup and RadioButtons to achieve this. For example,
<RadioButton
android:id="#+id/custom_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1"
android:button="#null"
android:background="#drawable/button_custom"/>
Where button_custom is the background image of the button shown. This image should have all the variations (like, normal, pressed, enabled, disabled, selected).