How to set the font of all controls in the current view

In this example, set the font style for all the controls on the interface at one time. The idea is to find the parent control and traverse the child control. If the child control is a control that can modify text, set text. This applies to control inheritance. Many controls are inherited from textview, so convert the controls into textview and set the font.

Layout File

<Relativelayout xmlns: Android = "http://schemas.android.com/apk/res/android" xmlns: Tools = "http://schemas.android.com/tools" Android: Id = "@ + ID/layout" Android: layout_width = "match_parent" Android: layout_height = "match_parent" tools: context = "$ {relativepackage }. $ {activityclass} "> <textview Android: Id =" @ + ID/textview1 "Android: layout_width =" wrap_content "Android: layout_height =" wrap_content "Android: layout_a Lignparenttop = "true" Android: layout_centerhorizontal = "true" Android: layout_margintop = "113dp" Android: text = "small text" Android: textappearance = "? Android: ATTR/textappearancesmall "/> <edittext Android: Id =" @ + ID/edittext1 "Android: layout_width =" wrap_content "Android: layout_height =" wrap_content "Android: layout_below = "@ + ID/textview1" Android: layout_centerhorizontal = "true" Android: layout_margintop = "41dp" Android: hint = "Kale" Android: gravity = "center_horizontal" Android: EMS = "10"> <requestfocus/> </edittext> <button Android: Id = "@ + ID/button1" androi D: layout_width = "wrap_content" Android: layout_height = "wrap_content" Android: layout_alignleft = "@ + ID/textview1" Android: layout_below = "@ + ID/edittext1" Android: layout_margintop = "50dp" Android: text = "button"/> <textview Android: Id = "@ + ID/textview2" Android: layout_width = "wrap_content" Android: layout_height = "wrap_content" Android: layout_alignparenttop = "true" Android: layout_alignright = "@ + ID/textview1" Andro ID: text = "set text size" Android: textappearance = "? Android: ATTR/textappearancesmall "/> <seekbar Android: Id =" @ + ID/seekbar "Android: layout_width =" match_parent "Android: layout_height =" wrap_content "Android: layout_below = "@ + ID/textview2" Android: layout_centerhorizontal = "true" Android: layout_margintop = "27dp" Android: max = "40" Android: progress = "16"/> </relativelayout>

 

Mainactivity

Package COM. kale. font; import android. app. activity; import android. graphics. typeface; import android. OS. bundle; import android. view. view; import android. view. viewgroup; import android. widget. button; import android. widget. edittext; import android. widget. seekbar; import android. widget. seekbar. onseekbarchangelistener; import android. widget. textview; public class mainactivity extends activity {Private Static int Flag = 0; @ override protected void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. activity_main); // sets fonts for all final typeface mfont = typeface. createfromasset (getassets (), "Roboto-Thin.ttf"); Final viewgroup root = (viewgroup) findviewbyid (R. id. layout); setfont (root, mfont, 16); flag = 1; // After initialization, the flag is set to 1, and the slide slider only modifies the font size. The specified font is not repeated. (Seekbar) findviewbyid (R. id. seekbar )). new feature () {@ override public void onstoptrackingtouch (seekbar) {}@ override public void onstarttrackingtouch (seekbar) {}@ override public void onprogresschanged (seekbar, int progress, Boolean fromuser) {setfont (root, mfont, Progress) ;}});}/** sets the font on all textviews in the viewgroup. searches recursively for * All inner viewgroups as well. just add a check for any other views you * want to set as well (edittext, etc .) */Public void setfont (viewgroup group, typeface font, int textsize) {int COUNT = group. getchildcount (); view V; For (INT I = 0; I <count; I ++) {v = group. getchildat (I); If (V instanceof textview | V instanceof edittext | V instanceof button) {If (flag = 0) {(textview) V ). settypeface (font);} (textview) V ). settextsize (textsize);} else if (V instanceof viewgroup) setfont (viewgroup) V, Font, textsize );}}}

 

Source code download: http://download.csdn.net/detail/shark0017/7732339