android - Programatcally remove margin from FrameLayout with LayoutParams -


i have framelayout looks this:

 <relativelayout     android:layout_width="match_parent"     android:layout_height="wrap_content">      <framelayout         android:layout_margintop="56dp"         android:layout_marginbottom="50dp"         android:id="@+id/main_frag"         android:layout_width="match_parent"         android:layout_height="match_parent" />            // other stuff        </relativelayout>

however when change margins programitcally classcastexception.

        framelayout fl = (framelayout) findviewbyid(r.id.main_frag);         framelayout.layoutparams params = (framelayout.layoutparams) fl.getlayoutparams();         params.setmargins(50, 0, 0, 0);         fl.setlayoutparams(params);

here how trying:

        framelayout fl = (framelayout) findviewbyid(r.id.main_frag);         framelayout.layoutparams params = (framelayout.layoutparams) fl.getlayoutparams();         params.setmargins(50, 0, 0, 0);         fl.setlayoutparams(params);

here logcat:

04-25 16:18:08.385: e/androidruntime(27682): java.lang.runtimeexception: unable start activity componentinfo{com.---.---/com.------.---.mainfragmentactivity}: java.lang.classcastexception: android.widget.relativelayout$layoutparams cannot cast android.widget.framelayout$layoutparams 04-25 16:18:08.385: e/androidruntime(27682):    @ android.app.activitythread.performlaunchactivity(activitythread.java:2314) 04-25 16:18:08.385: e/androidruntime(27682):    @ android.app.activitythread.handlelaunchactivity(activitythread.java:2388) 04-25 16:18:08.385: e/androidruntime(27682):    @ android.app.activitythread.access$800(activitythread.java:148) 04-25 16:18:08.385: e/androidruntime(27682):    @ android.app.activitythread$h.handlemessage(activitythread.java:1292) 04-25 16:18:08.385: e/androidruntime(27682):    @ android.os.handler.dispatchmessage(handler.java:102) 04-25 16:18:08.385: e/androidruntime(27682):    @ android.os.looper.loop(looper.java:135) 04-25 16:18:08.385: e/androidruntime(27682):    @ android.app.activitythread.main(activitythread.java:5312) 04-25 16:18:08.385: e/androidruntime(27682):    @ java.lang.reflect.method.invoke(native method) 04-25 16:18:08.385: e/androidruntime(27682):    @ java.lang.reflect.method.invoke(method.java:372) 04-25 16:18:08.385: e/androidruntime(27682):    @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:901) 04-25 16:18:08.385: e/androidruntime(27682):    @ com.android.internal.os.zygoteinit.main(zygoteinit.java:696) 04-25 16:18:08.385: e/androidruntime(27682): caused by: java.lang.classcastexception: android.widget.relativelayout$layoutparams cannot cast android.widget.framelayout$layoutparams 04-25 16:18:08.385: e/androidruntime(27682):    @ com.---.---.mainfragmentactivity.oncreate(mainfragmentactivity.java:81) 04-25 16:18:08.385: e/androidruntime(27682):    @ android.app.activity.performcreate(activity.java:5953) 04-25 16:18:08.385: e/androidruntime(27682):    @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1128) 04-25 16:18:08.385: e/androidruntime(27682):    @ android.app.activitythread.performlaunchactivity(activitythread.java:2267)

i don't understand how relativelayout involved here?

the layoutparams class dictated parent, not child. layoutparams affect framelayout relativelayout.layoutparams. layoutparams affects child of framelayout framelayout.layoutparams.


Comments

Post a Comment

Popular posts from this blog

asp.net mvc - SSO between MVCForum and Umbraco7 -

i need integrate sso between mvcforum (forum of company) , umbraco7 (manages cms company). however struggling shared authentication work. tried several ways suggested on other threads still not running expected. here did: 1. in mvcforum (forum.mywebsite.com) 1.1. machine key in web.xml: <machinekey validationkey="the same key umbraco7" decryptionkey="the same key umbraco7" validation="sha1" decryption="aes" /> 1.2. authenticate forms in web.xml <forms name="my-sso-auth" protection="all" path="/" timeout="43200" domain="forum.mywebsite.com" loginurl="/members/logon" enablecrossappredirects="true" /> 2. in umbraco7 (news.mywebsite.com) 2.1. machine key in web.xml: <machinekey validationkey="the same key mvcforum" decryptionkey="the same key mvcforum" validation="sha1" decryption="aes" /> 2.2. a
Read more

Python Tkinter keyboard using bind -

i have problem using bind option can click button in keyboard, , call function once key pressed. tried taking other codes have similar purpose , saw i'm doing pretty same, though still have problem must've missed. thankful if me this. here's code: # -*- coding: utf-8 -*- #imports tkinter import * pil import imagetk, image import time import tkmessagebox #===========================================================================================================================================# #tkinter class class app(frame): def __init__(self, master=none): frame.__init__(self, master) self.pack() #===========================================================================================================================================# #game pieces classes class board: def __init__(self, rows = 7, columns = 6, picture_height = none, picture_width = none): self.rows = rows self.columns = columns self.picture
Read more

ubuntu - Selenium Node Not Connecting to Hub, Not Opening Port -

i'm trying set demo selenium grid. have digital ocean ubuntu 14.02 droplet. (i have 2 , tried set using 2 different machines got nowhere.) i'm trying run hub , node both locally. here input both hub, node, , nmap results. https://gist.github.com/mekhami/d5bbecca5ff0de9d2dc9 so, node starting tcp connection reset , port it's supposed operate on closed. i have had no luck in number of different options , configurations work. but... of course, worked randomly once. don't know why, don't know did, know 1 brief moment, node connected , saw on grid console. tried run test , went down again , i've never seen come up. please let me know more information can provide. update: randomly came online again. don't know happened, might related timeout or time_wait or going on. this because vm/server not have enough entropy available. to resolve problem, install haveged (or other similar things). the instructions of how install haveged on ubu
Read more