java - Android HorizontalScrollView doesn't work with EditText -
so have android app outputs ascii art equivalent type in, "hello world" to
_ _ _ _ _ | |__ ___| | | ___ __ _____ _ __| | __| | | '_ \ / _ \ | |/ _ \ \ \ /\ / / _ \| '__| |/ _` | | | | | __/ | | (_) | \ v v / (_) | | | | (_| | |_| |_|\___|_|_|\___/ \_/\_/ \___/|_| |_|\__,_| being it's formatted , needs stay formatted, want horizontal scrolling edittext put in. tried make 1 didn't work well... here's java:
edittext medittext = (edittext) findviewbyid(r.id.text_status_id); horizontalscrollview mscrollview = (horizontalscrollview) findviewbyid(r.id.scroller_id); @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); init(); } private void loaddoc(){ intent intent = getintent(); string message = intent.getstringextra(mainactivity.extra_message); string letter; edittext textview = new edittext(this); typeface courier = typeface.createfromasset(getassets(),"courier_prime.ttf"); textview.settextsize(20); textview.settypeface(courier); setcontentview(textview); string value; string toprint; int textlength = message.length(); for(int = 0; <= 14; i++){ for(int j = 0; j < textlength; j++){ letter = message.substring(j,j+1).touppercase(locale.getdefault()); value = letter + i; toprint = isometric.get(value); textview.append(toprint); if(j == textlength-1){ textview.append("\n"); } } } } private void init() { loaddoc(); scrolltobottom(); } private void scrolltobottom() { mscrollview.post(new runnable() { public void run() { medittext.sethorizontallyscrolling(true); medittext.setmovementmethod(new scrollingmovementmethod()); mscrollview.smoothscrollto(0, medittext.getbottom()); } }); } @override public boolean oncreateoptionsmenu(menu menu) { // inflate menu; adds items action bar if present. getmenuinflater().inflate(r.menu.display_message, menu); return true; } @override public boolean onoptionsitemselected(menuitem item) { // handle action bar item clicks here. action bar // automatically handle clicks on home/up button, long // specify parent activity in androidmanifest.xml. int id = item.getitemid(); if (id == r.id.action_settings) { return true; } return super.onoptionsitemselected(item); } and here's xml:
<horizontalscrollview xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/scroller_id" android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="#333333" android:fillviewport="true" android:scrollbars="horizontal"> <linearlayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <edittext android:id="@+id/text_status_id" android:layout_width="0dip" android:layout_height="fill_parent" android:layout_gravity="center" android:layout_weight="1.0" android:textcolor="#cccccc" android:textsize="35sp" /> </linearlayout> </horizontalscrollview> every time try run it, application stops ("unfortunately, asciigen has stopped.") have no idea i'm doing wrong. here's logcat.
10-02 19:31:46.830: d/dalvikvm(864): not late-enabling checkjni (already on) 10-02 19:31:48.210: i/dalvikvm(864): not find method android.view.viewgroup.onnestedscrollaccepted, referenced method android.support.v7.internal.widget.actionbaroverlaylayout.onnestedscrollaccepted 10-02 19:31:48.210: w/dalvikvm(864): vfy: unable resolve virtual method 12212: landroid/view/viewgroup;.onnestedscrollaccepted (landroid/view/view;landroid/view/view;i)v 10-02 19:31:48.210: d/dalvikvm(864): vfy: replacing opcode 0x6f @ 0x0000 10-02 19:31:48.210: i/dalvikvm(864): not find method android.view.viewgroup.onstopnestedscroll, referenced method android.support.v7.internal.widget.actionbaroverlaylayout.onstopnestedscroll 10-02 19:31:48.210: w/dalvikvm(864): vfy: unable resolve virtual method 12218: landroid/view/viewgroup;.onstopnestedscroll (landroid/view/view;)v 10-02 19:31:48.210: d/dalvikvm(864): vfy: replacing opcode 0x6f @ 0x0000 10-02 19:31:48.230: i/dalvikvm(864): not find method android.support.v7.internal.widget.actionbaroverlaylayout.stopnestedscroll, referenced method android.support.v7.internal.widget.actionbaroverlaylayout.sethideoncontentscrollenabled 10-02 19:31:48.230: w/dalvikvm(864): vfy: unable resolve virtual method 9779: landroid/support/v7/internal/widget/actionbaroverlaylayout;.stopnestedscroll ()v 10-02 19:31:48.230: d/dalvikvm(864): vfy: replacing opcode 0x6e @ 0x000e 10-02 19:31:48.340: i/dalvikvm(864): not find method android.content.res.typedarray.getchangingconfigurations, referenced method android.support.v7.internal.widget.tinttypedarray.getchangingconfigurations 10-02 19:31:48.340: w/dalvikvm(864): vfy: unable resolve virtual method 393: landroid/content/res/typedarray;.getchangingconfigurations ()i 10-02 19:31:48.340: d/dalvikvm(864): vfy: replacing opcode 0x6e @ 0x0002 10-02 19:31:48.340: i/dalvikvm(864): not find method android.content.res.typedarray.gettype, referenced method android.support.v7.internal.widget.tinttypedarray.gettype 10-02 19:31:48.340: w/dalvikvm(864): vfy: unable resolve virtual method 415: landroid/content/res/typedarray;.gettype (i)i 10-02 19:31:48.340: d/dalvikvm(864): vfy: replacing opcode 0x6e @ 0x0002 10-02 19:31:48.370: i/dalvikvm(864): not find method android.content.res.resources.getdrawable, referenced method android.support.v7.internal.widget.resourceswrapper.getdrawable 10-02 19:31:48.370: w/dalvikvm(864): vfy: unable resolve virtual method 356: landroid/content/res/resources;.getdrawable (ilandroid/content/res/resources$theme;)landroid/graphics/drawable/drawable; 10-02 19:31:48.370: d/dalvikvm(864): vfy: replacing opcode 0x6e @ 0x0002 10-02 19:31:48.370: i/dalvikvm(864): not find method android.content.res.resources.getdrawablefordensity, referenced method android.support.v7.internal.widget.resourceswrapper.getdrawablefordensity 10-02 19:31:48.370: w/dalvikvm(864): vfy: unable resolve virtual method 358: landroid/content/res/resources;.getdrawablefordensity (iilandroid/content/res/resources$theme;)landroid/graphics/drawable/drawable; 10-02 19:31:48.370: d/dalvikvm(864): vfy: replacing opcode 0x6e @ 0x0002 10-02 19:31:49.120: i/choreographer(864): skipped 34 frames! application may doing work on main thread. 10-02 19:31:49.140: d/gralloc_goldfish(864): emulator without gpu emulation detected. 10-02 19:31:52.230: i/choreographer(864): skipped 64 frames! application may doing work on main thread. 10-02 19:31:53.700: i/choreographer(864): skipped 98 frames! application may doing work on main thread. 10-02 19:31:54.410: d/androidruntime(864): shutting down vm 10-02 19:31:54.410: w/dalvikvm(864): threadid=1: thread exiting uncaught exception (group=0xb2a12ba8) 10-02 19:31:54.460: e/androidruntime(864): fatal exception: main 10-02 19:31:54.460: e/androidruntime(864): process: com.dumpong.asciigen, pid: 864 10-02 19:31:54.460: e/androidruntime(864): java.lang.runtimeexception: unable instantiate activity componentinfo{com.dumpong.asciigen/com.dumpong.myfirstapp.displaymessageactivity}: java.lang.nullpointerexception 10-02 19:31:54.460: e/androidruntime(864): @ android.app.activitythread.performlaunchactivity(activitythread.java:2121) 10-02 19:31:54.460: e/androidruntime(864): @ android.app.activitythread.handlelaunchactivity(activitythread.java:2245) 10-02 19:31:54.460: e/androidruntime(864): @ android.app.activitythread.access$800(activitythread.java:135) 10-02 19:31:54.460: e/androidruntime(864): @ android.app.activitythread$h.handlemessage(activitythread.java:1196) 10-02 19:31:54.460: e/androidruntime(864): @ android.os.handler.dispatchmessage(handler.java:102) 10-02 19:31:54.460: e/androidruntime(864): @ android.os.looper.loop(looper.java:136) 10-02 19:31:54.460: e/androidruntime(864): @ android.app.activitythread.main(activitythread.java:5017) 10-02 19:31:54.460: e/androidruntime(864): @ java.lang.reflect.method.invokenative(native method) 10-02 19:31:54.460: e/androidruntime(864): @ java.lang.reflect.method.invoke(method.java:515) 10-02 19:31:54.460: e/androidruntime(864): @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:779) 10-02 19:31:54.460: e/androidruntime(864): @ com.android.internal.os.zygoteinit.main(zygoteinit.java:595) 10-02 19:31:54.460: e/androidruntime(864): @ dalvik.system.nativestart.main(native method) 10-02 19:31:54.460: e/androidruntime(864): caused by: java.lang.nullpointerexception 10-02 19:31:54.460: e/androidruntime(864): @ android.app.activity.findviewbyid(activity.java:1884) 10-02 19:31:54.460: e/androidruntime(864): @ com.dumpong.myfirstapp.displaymessageactivity.<init>(displaymessageactivity.java:295) 10-02 19:31:54.460: e/androidruntime(864): @ java.lang.class.newinstanceimpl(native method) 10-02 19:31:54.460: e/androidruntime(864): @ java.lang.class.newinstance(class.java:1208) 10-02 19:31:54.460: e/androidruntime(864): @ android.app.instrumentation.newactivity(instrumentation.java:1061) 10-02 19:31:54.460: e/androidruntime(864): @ android.app.activitythread.performlaunchactivity(activitythread.java:2112) 10-02 19:31:54.460: e/androidruntime(864): ... 11 more 10-02 19:31:58.730: i/process(864): sending signal. pid: 864 sig: 9 any appreciated, have no idea i'm doing wrong.
replace
edittext medittext = (edittext) findviewbyid(r.id.text_status_id); horizontalscrollview mscrollview = (horizontalscrollview) findviewbyid(r.id.scroller_id); with
edittext medittext; horizontalscrollview mscrollview; and initialize inside init() method
private void init() { medittext = (edittext) findviewbyid(r.id.text_status_id); mscrollview = (horizontalscrollview) findviewbyid(r.id.scroller_id); loaddoc(); scrolltobottom(); } 
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