ANDROID: starting activity with button click; the button has a background; excess memory issue -
i think have been able resolve main problem - folks help however, getting following warning / error messages in logcat:
06-03 10:52:25.420 7149-7149/xxx e/dalvikvm: not find class 'android.util.arraymap', referenced method com.android.tools.fd.runtime.monkeypatcher.monkeypatchexistingresources 06-03 10:52:25.420 7149-7149/xxx w/dalvikvm: vfy: unable resolve check-cast 1832 (landroid/util/arraymap;) in lcom/android/tools/fd/runtime/monkeypatcher; 06-03 10:52:25.420 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x1f @ 0x0258 06-03 10:52:25.420 7149-7149/xxx e/dalvikvm: not find class 'android.util.arraymap', referenced method com.android.tools.fd.runtime.monkeypatcher.pruneresourcecache 06-03 10:52:25.420 7149-7149/xxx w/dalvikvm: vfy: unable resolve const-class 1832 (landroid/util/arraymap;) in lcom/android/tools/fd/runtime/monkeypatcher; 06-03 10:52:25.420 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x1c @ 0x0058 06-03 10:52:25.435 7149-7149/xxx i/dalvikvm: not find method android.content.context.getsystemservice, referenced method xxx.mainactivity.access$super 06-03 10:52:25.435 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 512: landroid/content/context;.getsystemservice (ljava/lang/class;)ljava/lang/object; 06-03 10:52:25.435 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x004b 06-03 10:52:25.435 7149-7149/xxx i/dalvikvm: not find method android.app.activity.stoplocktask, referenced method xxx.mainactivity.access$super 06-03 10:52:25.435 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 248: landroid/app/activity;.stoplocktask ()v 06-03 10:52:25.435 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x00b9 06-03 10:52:25.435 7149-7149/xxx e/dalvikvm: not find class 'android.os.persistablebundle', referenced method xxx.mainactivity.access$super 06-03 10:52:25.435 7149-7149/xxx w/dalvikvm: vfy: unable resolve check-cast 260 (landroid/os/persistablebundle;) in lyyy/mainactivity; 06-03 10:52:25.435 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x1f @ 0x00f1 06-03 10:52:25.435 7149-7149/xxx i/dalvikvm: not find method android.content.context.getcolorstatelist, referenced method xxx.mainactivity.access$super 06-03 10:52:25.435 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 492: landroid/content/context;.getcolorstatelist (i)landroid/content/res/colorstatelist; 06-03 10:52:25.435 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0101 06-03 10:52:25.435 7149-7149/xxx i/dalvikvm: not find method android.app.activity.onvisiblebehindcanceled, referenced method xxx.mainactivity.access$super 06-03 10:52:25.435 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 168: landroid/app/activity;.onvisiblebehindcanceled ()v 06-03 10:52:25.435 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0111 06-03 10:52:25.435 7149-7149/xxx i/dalvikvm: not find method android.app.activity.onwindowstartingactionmode, referenced method xxx.mainactivity.access$super 06-03 10:52:25.435 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 172: landroid/app/activity;.onwindowstartingactionmode (landroid/view/actionmode$callback;i)landroid/view/actionmode; 06-03 10:52:25.435 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0137 06-03 10:52:25.435 7149-7149/xxx e/dalvikvm: not find class 'android.os.persistablebundle', referenced method xxx.mainactivity.access$super 06-03 10:52:25.435 7149-7149/xxx w/dalvikvm: vfy: unable resolve check-cast 260 (landroid/os/persistablebundle;) in lyyy/mainactivity; 06-03 10:52:25.435 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x1f @ 0x019a 06-03 10:52:25.435 7149-7149/xxx e/dalvikvm: not find class 'android.media.session.mediacontroller', referenced method xxx.mainactivity.access$super 06-03 10:52:25.435 7149-7149/xxx w/dalvikvm: vfy: unable resolve check-cast 213 (landroid/media/session/mediacontroller;) in lyyy/mainactivity; 06-03 10:52:25.435 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x1f @ 0x01b2 06-03 10:52:25.435 7149-7149/xxx e/dalvikvm: not find class 'android.widget.toolbar', referenced method xxx.mainactivity.access$super 06-03 10:52:25.435 7149-7149/xxx w/dalvikvm: vfy: unable resolve check-cast 2020 (landroid/widget/toolbar;) in lyyy/mainactivity; 06-03 10:52:25.435 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x1f @ 0x01bc 06-03 10:52:25.435 2365-2490/? i/crashanrdetector: onpackageupdatefinished : xxx 06-03 10:52:25.435 7149-7149/xxx i/dalvikvm: not find method android.app.activity.releaseinstance, referenced method xxx.mainactivity.access$super 06-03 10:52:25.435 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 179: landroid/app/activity;.releaseinstance ()z 06-03 10:52:25.435 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x02dd 06-03 10:52:25.435 7149-7149/xxx i/dalvikvm: not find method android.app.activity.onactivityreenter, referenced method xxx.mainactivity.access$super 06-03 10:52:25.435 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 112: landroid/app/activity;.onactivityreenter (ilandroid/content/intent;)v 06-03 10:52:25.435 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x02f4 06-03 10:52:25.435 7149-7149/xxx i/dalvikvm: not find method android.content.contextwrapper.getcodecachedir, referenced method xxx.mainactivity.access$super 06-03 10:52:25.435 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 564: landroid/content/contextwrapper;.getcodecachedir ()ljava/io/file; 06-03 10:52:25.435 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0349 06-03 10:52:25.440 7149-7149/xxx i/dalvikvm: dexopt: illegal method access (call landroid/support/v4/app/fragmentactivity;.dispatchfragmentsoncreateview (landroid/view/view;ljava/lang/string;landroid/content/context;landroid/util/attributeset;)landroid/view/view; lyyy/mainactivity;) 06-03 10:52:25.440 7149-7149/xxx i/dalvikvm: not find method android.support.v4.app.fragmentactivity.dispatchfragmentsoncreateview, referenced method xxx.mainactivity.access$super 06-03 10:52:25.440 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 2580: landroid/support/v4/app/fragmentactivity;.dispatchfragmentsoncreateview (landroid/view/view;ljava/lang/string;landroid/content/context;landroid/util/attributeset;)landroid/view/view; 06-03 10:52:25.440 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0432 06-03 10:52:25.440 7149-7149/xxx i/dalvikvm: not find method android.app.activity.getvoiceinteractor, referenced method xxx.mainactivity.access$super 06-03 10:52:25.440 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 91: landroid/app/activity;.getvoiceinteractor ()landroid/app/voiceinteractor; 06-03 10:52:25.440 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0490 06-03 10:52:25.440 7149-7149/xxx e/dalvikvm: not find class 'android.app.activitymanager$taskdescription', referenced method xxx.mainactivity.access$super 06-03 10:52:25.440 7149-7149/xxx w/dalvikvm: vfy: unable resolve check-cast 26 (landroid/app/activitymanager$taskdescription;) in lyyy/mainactivity; 06-03 10:52:25.440 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x1f @ 0x055b 06-03 10:52:25.440 7149-7149/xxx i/dalvikvm: not find method android.app.activity.startactionmode, referenced method xxx.mainactivity.access$super 06-03 10:52:25.440 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 223: landroid/app/activity;.startactionmode (landroid/view/actionmode$callback;i)landroid/view/actionmode; 06-03 10:52:25.440 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0596 06-03 10:52:25.440 7149-7149/xxx i/dalvikvm: not find method android.app.activity.showassist, referenced method xxx.mainactivity.access$super 06-03 10:52:25.440 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 218: landroid/app/activity;.showassist (landroid/os/bundle;)z 06-03 10:52:25.440 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x05d8 06-03 10:52:25.440 7149-7149/xxx i/dalvikvm: not find method android.app.activity.postponeentertransition, referenced method xxx.mainactivity.access$super 06-03 10:52:25.440 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 176: landroid/app/activity;.postponeentertransition ()v 06-03 10:52:25.440 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x05e3 06-03 10:52:25.440 7149-7149/xxx i/dalvikvm: not find method android.content.contextwrapper.getnobackupfilesdir, referenced method xxx.mainactivity.access$super 06-03 10:52:25.440 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 576: landroid/content/contextwrapper;.getnobackupfilesdir ()ljava/io/file; 06-03 10:52:25.440 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0672 06-03 10:52:25.445 7149-7149/xxx i/dalvikvm: not find method android.app.activity.requestpermissions, referenced method xxx.mainactivity.access$super 06-03 10:52:25.445 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 182: landroid/app/activity;.requestpermissions ([ljava/lang/string;i)v 06-03 10:52:25.445 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0787 06-03 10:52:25.445 7149-7149/xxx e/dalvikvm: not find class 'android.app.sharedelementcallback', referenced method xxx.mainactivity.access$super 06-03 10:52:25.445 7149-7149/xxx w/dalvikvm: vfy: unable resolve check-cast 57 (landroid/app/sharedelementcallback;) in lyyy/mainactivity; 06-03 10:52:25.445 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x1f @ 0x07a1 06-03 10:52:25.445 7149-7149/xxx e/dalvikvm: not find class 'android.os.persistablebundle', referenced method xxx.mainactivity.access$super 06-03 10:52:25.445 7149-7149/xxx w/dalvikvm: vfy: unable resolve check-cast 260 (landroid/os/persistablebundle;) in lyyy/mainactivity; 06-03 10:52:25.445 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x1f @ 0x07e8 06-03 10:52:25.445 7149-7149/xxx w/dalvikvm: dexopt: resolve class illegal access: lyyy/mainactivity; -> landroid/support/v4/app/basefragmentactivitydonut; 06-03 10:52:25.445 7149-7149/xxx i/dalvikvm: not find method android.support.v4.app.basefragmentactivitydonut.oncreateview, referenced method xxx.mainactivity.access$super 06-03 10:52:25.445 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 2356: landroid/support/v4/app/basefragmentactivitydonut;.oncreateview (ljava/lang/string;landroid/content/context;landroid/util/attributeset;)landroid/view/view; 06-03 10:52:25.445 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x082c 06-03 10:52:25.445 7149-7149/xxx i/dalvikvm: not find method android.content.contextwrapper.getexternalfilesdirs, referenced method xxx.mainactivity.access$super 06-03 10:52:25.445 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 571: landroid/content/contextwrapper;.getexternalfilesdirs (ljava/lang/string;)[ljava/io/file; 06-03 10:52:25.445 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0882 06-03 10:52:25.445 7149-7149/xxx e/dalvikvm: not find class 'android.transition.transitionmanager', referenced method xxx.mainactivity.access$super 06-03 10:52:25.445 7149-7149/xxx w/dalvikvm: vfy: unable resolve check-cast 1829 (landroid/transition/transitionmanager;) in lyyy/mainactivity; 06-03 10:52:25.445 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x1f @ 0x093e 06-03 10:52:25.445 7149-7149/xxx i/dalvikvm: not find method android.app.activity.onprovidereferrer, referenced method xxx.mainactivity.access$super 06-03 10:52:25.445 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 152: landroid/app/activity;.onprovidereferrer ()landroid/net/uri; 06-03 10:52:25.445 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x097e 06-03 10:52:25.445 7149-7149/xxx i/dalvikvm: dexopt: illegal method access (call landroid/support/v4/app/fragmentactivity;.doreallystop (z)v lyyy/mainactivity;) 06-03 10:52:25.445 7149-7149/xxx i/dalvikvm: not find method android.support.v4.app.fragmentactivity.doreallystop, referenced method xxx.mainactivity.access$super 06-03 10:52:25.445 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 2582: landroid/support/v4/app/fragmentactivity;.doreallystop (z)v 06-03 10:52:25.445 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x09ab 06-03 10:52:25.450 7149-7149/xxx i/dalvikvm: not find method android.content.context.getdrawable, referenced method xxx.mainactivity.access$super 06-03 10:52:25.450 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 496: landroid/content/context;.getdrawable (i)landroid/graphics/drawable/drawable; 06-03 10:52:25.450 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x09f5 06-03 10:52:25.450 7149-7149/xxx i/dalvikvm: not find method android.app.activity.showlocktaskescapemessage, referenced method xxx.mainactivity.access$super 06-03 10:52:25.450 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 221: landroid/app/activity;.showlocktaskescapemessage ()v 06-03 10:52:25.450 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0a05 06-03 10:52:25.450 7149-7149/xxx i/dalvikvm: not find method android.app.activity.getcontenttransitionmanager, referenced method xxx.mainactivity.access$super 06-03 10:52:25.450 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 66: landroid/app/activity;.getcontenttransitionmanager ()landroid/transition/transitionmanager; 06-03 10:52:25.450 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0a0b 06-03 10:52:25.450 7149-7149/xxx e/dalvikvm: not find class 'android.app.sharedelementcallback', referenced method xxx.mainactivity.access$super 06-03 10:52:25.450 7149-7149/xxx w/dalvikvm: vfy: unable resolve check-cast 57 (landroid/app/sharedelementcallback;) in lyyy/mainactivity; 06-03 10:52:25.450 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x1f @ 0x0ac7 06-03 10:52:25.450 7149-7149/xxx i/dalvikvm: not find method android.app.activity.getreferrer, referenced method xxx.mainactivity.access$super 06-03 10:52:25.450 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 80: landroid/app/activity;.getreferrer ()landroid/net/uri; 06-03 10:52:25.450 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0b3b 06-03 10:52:25.455 7149-7149/xxx i/dalvikvm: not find method android.content.contextwrapper.getsystemservicename, referenced method xxx.mainactivity.access$super 06-03 10:52:25.455 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 585: landroid/content/contextwrapper;.getsystemservicename (ljava/lang/class;)ljava/lang/string; 06-03 10:52:25.455 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0bb8 06-03 10:52:25.455 7149-7149/xxx i/dalvikvm: not find method android.app.activity.isvoiceinteractionroot, referenced method xxx.mainactivity.access$super 06-03 10:52:25.455 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 104: landroid/app/activity;.isvoiceinteractionroot ()z 06-03 10:52:25.455 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0be0 06-03 10:52:25.455 7149-7149/xxx i/dalvikvm: not find method android.content.contextwrapper.getexternalmediadirs, referenced method xxx.mainactivity.access$super 06-03 10:52:25.455 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 572: landroid/content/contextwrapper;.getexternalmediadirs ()[ljava/io/file; 06-03 10:52:25.455 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0c68 06-03 10:52:25.455 7149-7149/xxx i/dalvikvm: not find method android.app.activity.getmediacontroller, referenced method xxx.mainactivity.access$super 06-03 10:52:25.455 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 74: landroid/app/activity;.getmediacontroller ()landroid/media/session/mediacontroller; 06-03 10:52:25.455 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0cac 06-03 10:52:25.455 7149-7149/xxx i/dalvikvm: not find method android.app.activity.getsearchevent, referenced method xxx.mainactivity.access$super 06-03 10:52:25.455 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 83: landroid/app/activity;.getsearchevent ()landroid/view/searchevent; 06-03 10:52:25.455 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0d2b 06-03 10:52:25.455 7149-7149/xxx i/dalvikvm: dexopt: illegal method access (call landroid/support/v4/app/fragmentactivity;.onreallystop ()v lyyy/mainactivity;) 06-03 10:52:25.455 7149-7149/xxx i/dalvikvm: not find method android.support.v4.app.fragmentactivity.onreallystop, referenced method xxx.mainactivity.access$super 06-03 10:52:25.455 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 2616: landroid/support/v4/app/fragmentactivity;.onreallystop ()v 06-03 10:52:25.455 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0d6b 06-03 10:52:25.455 5258-5258/? d/abslistview: ondetachedfromwindow 06-03 10:52:25.455 7149-7149/xxx i/dalvikvm: not find method android.app.activity.isvoiceinteraction, referenced method xxx.mainactivity.access$super 06-03 10:52:25.455 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 103: landroid/app/activity;.isvoiceinteraction ()z 06-03 10:52:25.455 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0ddb 06-03 10:52:25.455 7149-7149/xxx i/dalvikvm: not find method android.app.activity.requestvisiblebehind, referenced method xxx.mainactivity.access$super 06-03 10:52:25.455 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 183: landroid/app/activity;.requestvisiblebehind (z)z 06-03 10:52:25.455 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0e40 06-03 10:52:25.455 7149-7149/xxx i/dalvikvm: not find method android.app.activity.shouldshowrequestpermissionrationale, referenced method xxx.mainactivity.access$super 06-03 10:52:25.455 7149-7149/xxx w/dalvikvm: vfy: unable resolve virtual method 216: landroid/app/activity;.shouldshowrequestpermissionrationale (ljava/lang/string;)z 06-03 10:52:25.455 7149-7149/xxx d/dalvikvm: vfy: replacing opcode 0x6f @ 0x0e55 06-03 10:52:25.455 7149-7149/xxx i/dalvikvm: not find method android.app.activity.finishandremovetask, referenced method xxx.mainactivity.access$superwhat have? main activity - having 7 buttons, each button has image background. buttons clickable, , on click of each button new activity started. so, if click button 1, activity1 started, on clicking button2, activity2 started , on. each of new activities, i.e., activity1, activity2, ... activity7 have image, app taking mipmap folder.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" xmlns:ads="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingbottom="@dimen/activity_vertical_margin" android:paddingleft="@dimen/activity_horizontal_margin" android:paddingright="@dimen/activity_horizontal_margin" android:paddingtop="@dimen/activity_vertical_margin" tools:context="xxx.mainactivity"> <button android:layout_width="103dp" android:layout_height="82dp" android:id="@+id/btn_inside" android:layout_below="@+id/ll_subheading1" android:layout_centerhorizontal="true" android:background="@mipmap/pic_small_inside" style="@style/widget.appcompat.button.borderless" android:clickable="true"/> <button android:layout_width="103dp" android:layout_height="82dp" android:id="@+id/btn_on_the_side1" android:layout_below="@+id/ll_subheading2" android:layout_alignparentleft="true" android:layout_alignparentstart="true" android:background="@mipmap/pic_small_on_the_side1" style="@style/base.widget.appcompat.button.borderless" android:clickable="true"/> <button android:layout_width="103dp" android:layout_height="82dp" android:id="@+id/btn_on_the_side3" android:layout_below="@+id/ll_subheading2" android:layout_alignparentright="true" android:layout_alignparentend="true" android:background="@mipmap/pic_small_on_the_side3" style="@style/base.widget.appcompat.button.borderless" android:clickable="true"/> <button android:layout_width="103dp" android:layout_height="82dp" android:id="@+id/btn_on_the_side2" android:layout_aligntop="@+id/btn_on_the_side1" android:layout_centerhorizontal="true" android:background="@mipmap/pic_small_on_the_side2" style="@style/base.widget.appcompat.button.borderless" android:clickable="true"/> </relativelayout>mainactivity.java
public class mainactivity extends appcompatactivity { private static button btn1, btn2, btn3, btn4, btn5, btn6, btn7; @ override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); onclickbuttonlistener(); } public void onclickbuttonlistener() { btn1 = (button) findviewbyid(r.id.btn_1); btn1.setonclicklistener(new view.onclicklistener() {@ override public void onclick(view v) { intent intent_1 = new intent(mainactivity.this, mainactivity_1.class); startactivity(intent_1); } }); btn2 = (button) findviewbyid(r.id.btn_2); btn2.setonclicklistener(new view.onclicklistener() {@ override public void onclick(view v) { intent intent_2 = new intent(mainactivity.this, mainactivity_2.class); startactivity(intent_2); } }); btn3 = (button) findviewbyid(r.id.btn_3); btn3.setonclicklistener(new view.onclicklistener() {@ override public void onclick(view v) { intent intent_3 = new intent(mainactivity.this, mainactivity_3.class); startactivity(intent_3); } }); btn4 = (button) findviewbyid(r.id.btn_4); btn4.setonclicklistener(new view.onclicklistener() {@ override public void onclick(view v) { intent intent_4 = new intent(mainactivity.this, mainactivity_4.class); startactivity(intent_4); } }); btn5 = (button) findviewbyid(r.id.btn_5); btn5.setonclicklistener(new view.onclicklistener() {@ override public void onclick(view v) { intent intent_5 = new intent(mainactivity.this, mainactivity_5.class); startactivity(intent_5); } }); btn6 = (button) findviewbyid(r.id.btn_6); btn6.setonclicklistener(new view.onclicklistener() {@ override public void onclick(view v) { intent intent_6 = new intent(mainactivity.this, mainactivity_6.class); startactivity(intent_6); } }); btn7 = (button) findviewbyid(r.id.btn_7); btn7.setonclicklistener(new view.onclicklistener() {@ override public void onclick(view v) { intent intent_7 = new intent(mainactivity.this, mainactivity_7.class); startactivity(intent_7); } }); } }logcat
05 - 25 23: 43: 17.209 17042 - 17042 < xx > w / < yy > : threadid = 1: thread exiting uncaught exception(group = 0x41e4e700) 05 - 25 23: 43: 17.209 17042 - 17042 < xx > e / androidruntime: fatal exception: main java.lang.outofmemoryerror @ android.graphics.bitmapfactory.nativedecodeasset(native method) @ android.graphics.bitmapfactory.decodestream(bitmapfactory.java: 596) @ android.graphics.bitmapfactory.decoderesourcestream(bitmapfactory.java: 444) @ android.graphics.drawable.drawable.createfromresourcestream(drawable.java: 832) @ android.content.res.resources.loaddrawable(resources.java: 2988) @ android.content.res.typedarray.getdrawable(typedarray.java: 602) @ android.view.view. < init > (view.java: 3563) @ android.widget.textview. < init > (textview.java: 881) @ android.widget.button. < init > (button.java: 108) @ android.support.v7.widget.appcompatbutton. < init > (appcompatbutton.java: 62) @ android.support.v7.widget.appcompatbutton. < init > (appcompatbutton.java: 58) @ android.support.v7.app.appcompatviewinflater.createview(appcompatviewinflater.java: 105) @ android.support.v7.app.appcompatdelegateimplv7.createview(appcompatdelegateimplv7.java: 972) @ android.support.v7.app.appcompatdelegateimplv7.oncreateview(appcompatdelegateimplv7.java: 1030) @ android.support.v4.view.layoutinflatercompathc$factorywrapperhc.oncreateview(layoutinflatercompathc.java: 44) @ android.view.layoutinflater.createviewfromtag(layoutinflater.java: 690) @ android.view.layoutinflater.rinflate(layoutinflater.java: 761) @ android.view.layoutinflater.inflate(layoutinflater.java: 498) @ android.view.layoutinflater.inflate(layoutinflater.java: 398) @ android.view.layoutinflater.inflate(layoutinflater.java: 354) @ android.support.v7.app.appcompatdelegateimplv7.setcontentview(appcompatdelegateimplv7.java: 276) @ android.support.v7.app.appcompatactivity.setcontentview(appcompatactivity.java: 136) @ abcpqr.red.mainactivity_1.oncreate(mainactivity_1.java: 21) @ android.app.activity.performcreate(activity.java: 5372) @ android.app.instrumentation.callactivityoncreate(instrumentation.java: 1104) @ android.app.activitythread.performlaunchactivity(activitythread.java: 2257) @ android.app.activitythread.handlelaunchactivity(activitythread.java: 2349) @ android.app.activitythread.access$700(activitythread.java: 159) t android.app.activitythread$h.handlemessage(activitythread.java: 1316) @ android.os.handler.dispatchmessage(handler.java: 99) @ android.os.looper.loop(looper.java: 176) @ android.app.activitythread.main(activitythread.java: 5419) @ java.lang.reflect.method.invokenative(native method) @ java.lang.reflect.method.invoke(method.java: 525) @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java: 1046) @ com.android.internal.os.zygoteinit.main(zygoteinit.java: 862) @ dalvik.system.nativestart.main(native method) 05 - 25 23: 43: 25.074 17042 - 17042 < xx > / process: sending signal.pid: 17042 sig: 9what problem? having error of excess memory.
graphical representation of problem please see image below: 
please me? there better way of approaching such problem?
any appreciated. thanks!
1) make sure images best size highest density they'll displayed on. (if they're huge images being compressed they're taking lot of memory).
2) change buttons imagebuttons, clear out memory after during activity onstop():
@override protected void onstop(){ // controls images , makes sure // they're not using memory once activity closed drawable d = imagebutton1.getdrawable(); if (d != null) d.setcallback(null); imagebutton1.setimagedrawable(null); } just remember when want reload activity, you'll have redeclare imagebutton src.
@override protected void onresume(){ super.onresume(); imagebutton1.setimageresource(r.mipmap.pic_small_inside); } 