android - Placing Button on top of ImageView that stretches with different screen sizes -


i have image (match_parent) 2 rectangles in containing options. trying place 2 transparent buttons on top of image clicking on image results in action. however, trying support multiple screen sizes, while able play around layout margins line rectangles in buttons specific resolution smartphone, testing tablet failed.

how place buttons consistently line image stretches fill varying screen sizes.

pretty simple layout code right using dp doesn't work 

<imageview     android:layout_width="match_parent"     android:layout_height="match_parent"     android:id="@+id/banner"     android:background="@drawable/banner"     android:contentdescription="@string/banner" />  <button     android:layout_width="120dp"     android:layout_height="90dp"     android:id="@+id/vs_computer"     android:layout_margintop="135dp"     android:layout_marginleft="135dp"     android:alpha="0"     android:clickable="true"     android:shadowcolor="@android:color/transparent"     android:singleline="true" />  <button     android:layout_width="120dp"     android:layout_height="100dp"     android:id="@+id/multiplayer"     android:layout_margintop="260dp"     android:layout_marginleft="135dp"     android:alpha="0"     android:clickable="true"     android:shadowcolor="@android:color/transparent"     android:singleline="true" />

the temporary image using: options http://ft.trillian.im/17107e0bd3d38d3147acf89ff7b55b6543455af6/6ypgztjzurzbt6uacyiwsqvjotojc.jpg

you omit 2 button graphics background image (just leave blank space) , make them separate images. can put on 2 imagebuttons. solves immediate problem of having line absolutely pixel perfectly.

to size , position buttons, figure out left/right , top/bottom margins percentage of screen width , height. can create custom layout (subclass of viewgroup) , implement onlayout(...) method position 2 buttons within desired region of background image applying percentages whatever view size happens be.

that custom viewgroup this:

public class blah extends viewgroup {      button b1;      @override     protected void onfinishinflate() {         super.onfinishinflate();         b1 = (button) findviewbyid(r.id.button_1);     }      @override     protected void onlayout(boolean changed, int l, int t, int r, int b) {         // in dimensions xml: <fraction name="button_margin_horizontal">20%p</fraction>         int left = (int) getresources().getfraction(r.fraction.button_margin_horizontal, 0, getwidth());         int right = getwidth() - left;         int buttonheight = b1.getmeasuredheight();         b1.layout(left, 0, right, buttonheight);     } }

Comments

Post a Comment

Popular posts from this blog

c# - Validate object ID from GET to POST -

i have method allows user access comment have made on site. have post method lets them update comment. my normal solution send entire comment model through, let them update it, update on database when post back. involve sending commentid through in hiddenfor , can manipulated. how can verify commentid sent in get method same i'm getting in post , not able alter comment wish? how can verify commentid sent in method same i'm getting in post? basically have validate following things in post - user logged-in user. authenticated users post comments. commentid in post , should valid commentid , should present in database. userid associated logged-in user should same userid associated comment . comment should contain userid column, can check @ time of update. to make sure update happens comment has been sent in get - hold commentid in session , in post action compare commentid value in session .
Read more

node.js - Custom Model Validator SailsJS -

when using custom model validator checks record within model. return within spread doesn't seem end control flow. //post.js model /** * custom validator **/ types: { isuservalid: function(user_id) { var promise = require('bluebird'); promise.all([ user.findone({id: user_id}) ]) .spread(function(user) { console.log(user); if (user === null || user === undefined) { console.log('failed'); return false; }else{ console.log('passed'); return true; } }); } }, my response standard validation failed response. { "error": "e_validation", "status": 400, "summary": "1 attribute invalid", "model": "post", "invalidattributes": { "owner": [ { "rule": "isuservalid", ...
Read more

php - Find a regex to take part of Email -

i have following emails need extract part from: bestellnummer xxx: 1 von xxx, 1er pack ------------- anfang der nachricht ------------- foo bar baz foo bar baz // <<<<< need text here ------------- ende der nachricht ------------- ------------- anfang der nachricht ------------- foo bar baz foo bar baz ------------- ende der nachricht ------------- there 0 unlimited occurences of ------------- anfang der nachricht ------------- ------------- ende der nachricht ------------- and i'm able extract first part regex: $re = "/------------- .*? -------------.?(.*?).?------------- .*? -------------/s"; but, i'm quite new on learning regex, i'm pretty sure there must better regex extract part (foo bar baz foo bar baz) of text between ------------- anfang der nachricht ------------- ------------- ende der nachricht ------------- as can in different languages, i'm using .? to match between hyphens. i...
Read more