Specify the input method type | Android Developers

Specify the keyboard type ... 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Beyondthetypeofbuttonsavailablewithaninputmethod,youshouldspecify behaviorssuchaswhethertheinputmethodprovidesspellingsuggestions, capitalizesnewsentences,andreplacesthecarriagereturnbuttonwithan actionbuttonsuchasaDoneorNext. Thislessonshowshowtospecifythesecharacteristics. Specifythekeyboardtype Youshouldalwaysdeclaretheinputmethodforyourtextfieldsbyadding theandroid:inputTypeattributetotheelement. Figure1.Thephoneinputtype. Forexample,ifyou'dlikeaninputmethodforenteringaphonenumber, usethe"phone"value: Figure2.ThetextPasswordinputtype. Orifthetextfieldisforapassword,usethe"textPassword"value sothetextfieldconcealstheuser'sinput: Thereareseveralpossiblevaluesdocumentedwiththe android:inputTypeattributeand someofthevaluescanbecombinedtospecifytheinputmethod appearanceandadditionalbehaviors. Enablespellingsuggestionsandotherbehaviors Figure3.AddingtextAutoCorrect providesauto-correctionformisspellings. Theandroid:inputTypeattributeallowsyoutospecifyvariousbehaviorsforthe inputmethod.Mostimportantly,ifyourtextfieldisintendedforbasictextinput(such asforatextmessage),youshouldenableautospellingcorrectionwiththe "textAutoCorrect"value. Youcancombinedifferentbehaviorsandinputmethodstyleswiththe android:inputTypeattribute.Forexample, here'showtocreateatextfieldthatcapitalizesthefirstwordofasentence andalsoauto-correctsmisspellings: Specifytheinputmethodaction Mostsoftinputmethodsprovideauseractionbuttoninthe bottomcornerthat'sappropriateforthecurrenttextfield. Bydefault,thesystemusesthisbuttonforeitheraNextor Doneactionunlessyourtextfieldallowsmulti-linetext(suchaswith android:inputType="textMultiLine"),inwhichcasetheactionbutton isacarriagereturn. However,youcanspecifyadditionalactionsthatmightbemoreappropriateforyour textfield,suchasSendorGo. Tospecifythekeyboardactionbutton,usetheandroid:imeOptions attributewithanactionvaluesuchas"actionSend"or "actionSearch".Forexample: Figure4.TheSendbuttonappearswhenyoudeclare android:imeOptions="actionSend". Youcanthenlistenforpressesontheactionbuttonbydefininga TextView.OnEditorActionListenerfortheEditText element.Inyourlistener,respondtotheappropriateIMEactionIDdefinedinthe EditorInfoclass,suchas IME_ACTION_SEND.Forexample: Kotlin findViewById(R.id.search).setOnEditorActionListener{v,actionId,event-> return@setOnEditorActionListenerwhen(actionId){ EditorInfo.IME_ACTION_SEND->{ sendMessage() true } else->false } } Java EditTexteditText=(EditText)findViewById(R.id.search); editText.setOnEditorActionListener(newOnEditorActionListener(){ @Override publicbooleanonEditorAction(TextViewv,intactionId,KeyEventevent){ booleanhandled=false; if(actionId==EditorInfo.IME_ACTION_SEND){ sendMessage(); handled=true; } returnhandled; } }); Provideauto-completesuggestions Ifyouwanttoprovidesuggestionstousersastheytype,youcanusea subclassofEditTextcalledAutoCompleteTextView.Toimplementauto-complete,youmust specifyanAdapterthatprovidesthetextsuggestions. Thereareseveralkindsofadaptersavailable,dependingonwherethedatais comingfrom,suchasfromadatabaseoranarray. Figure5.ExampleofAutoCompleteTextViewwithtextsuggestions. ThefollowingproceduredescribeshowtosetupanAutoCompleteTextViewthatprovidessuggestionsfromanarray, usingArrayAdapter: AddtheAutoCompleteTextViewtoyourlayout.Here's alayoutwithonlythetextfield: Definethearraythatcontainsalltextsuggestions.Forexample,here's anarrayofcountrynamesthat'sdefinedinanXMLresourcefile (res/values/strings.xml): Afghanistan Albania Algeria AmericanSamoa Andorra Angola Anguilla Antarctica ... InyourActivityorFragment,use thefollowingcodetospecifytheadapterthatsuppliesthesuggestions: Kotlin //GetareferencetotheAutoCompleteTextViewinthelayout valtextView=findViewById(R.id.autocomplete_country)asAutoCompleteTextView //Getthestringarray valcountries:Array=resources.getStringArray(R.array.countries_array) //CreatetheadapterandsetittotheAutoCompleteTextView ArrayAdapter(this,android.R.layout.simple_list_item_1,countries).also{adapter-> textView.setAdapter(adapter) } Java //GetareferencetotheAutoCompleteTextViewinthelayout AutoCompleteTextViewtextView=(AutoCompleteTextView)findViewById(R.id.autocomplete_country); //Getthestringarray String[]countries=getResources().getStringArray(R.array.countries_array); //CreatetheadapterandsetittotheAutoCompleteTextView ArrayAdapteradapter= newArrayAdapter(this,android.R.layout.simple_list_item_1,countries); textView.setAdapter(adapter); Here,anewArrayAdapterisinitializedtobindeach iteminthecountries_arraystringarraytoaTextViewthatexistsinthesimple_list_item_1 layout(thisisalayoutprovidedbyAndroidthatprovidesastandard appearancefortextinalist). AssigntheadaptertotheAutoCompleteTextViewby callingsetAdapter(). Next Handlinginputmethodvisibility arrow_forward ContentandcodesamplesonthispagearesubjecttothelicensesdescribedintheContentLicense.JavaisaregisteredtrademarkofOracleand/oritsaffiliates. Lastupdated2021-10-27UTC. 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