View (views)--autocompletetextview, Spinner

Autocompletetextview

I. Automatic prompt text input box and case-insensitive

Two. Adapter Arrayadapter

1. Data source is string[] or collection, save the text you want to prompt

2.layout file

Three. Completionthreshold

1. Set the minimum number of characters required to prompt

2. Default is 2

1<?xml version= "1.0" encoding= "Utf-8"?>2<linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"3Xmlns:tools= "Http://schemas.android.com/tools"4Android:layout_width= "Match_parent"5android:layout_height= "Match_parent"6android:paddingbottom= "@dimen/activity_vertical_margin"7android:paddingleft= "@dimen/activity_horizontal_margin"8android:paddingright= "@dimen/activity_horizontal_margin"9android:paddingtop= "@dimen/activity_vertical_margin"Tentools:context= "Com.hanqi.testapp2.TestActivity11" Oneandroid:orientation= "Vertical" > A  -<Autocompletetextview -Android:layout_width= "Match_parent" theandroid:layout_height= "Wrap_content" -Android:hint= "Please enter ..." -Android:id= "@+id/at_1" -android:completionthreshold= "1"/> +</LinearLayout>

. XML

1  Packagecom.hanqi.testapp2;2 3 Importandroid.app.Notification;4 ImportAndroid.app.NotificationManager;5 Importandroid.app.PendingIntent;6 Importandroid.content.Intent;7 ImportAndroid.os.Bundle;8 Importandroid.support.v7.app.AppCompatActivity;9 ImportAndroid.view.View;Ten ImportAndroid.widget.AdapterView; One ImportAndroid.widget.ArrayAdapter; A ImportAndroid.widget.AutoCompleteTextView; - ImportAndroid.widget.Spinner; - ImportAndroid.widget.Toast; the  -  Public classTestActivity11extendsappcompatactivity { -  - Autocompletetextview at_1; + @Override -     protected voidonCreate (Bundle savedinstancestate) { +         Super. OnCreate (savedinstancestate); A Setcontentview (r.layout.activity_test11); at  -at_1=(Autocompletetextview) Findviewbyid (r.id.at_1); - //preparing the data source -string[]strings={"abc", "and", "Bea", "Car", "ABCDE", "aaaaaa", "anddd"}; -  -         //preparing the adapter inArrayadapter<string> aa=NewArrayadapter<string> ( This, r.layout.array_adapter,strings); -  to         //building an adapter for a component + at_1.setadapter (AA); -  } the}

. Java

Spinner

I. Concept: drop-down list box

Two. Adapter Arrayadapter

1. Data source is string[] or collection, save the text you want to prompt

2.layout file

Three. Listener Adapterview.onitemselectedlistener ()

1.void onitemselected (adapterview<?> parent, view view, int position, long ID)

2.void onnothingselected (adapterview<?> parent)

1<?xml version= "1.0" encoding= "Utf-8"?>2<linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"3Xmlns:tools= "Http://schemas.android.com/tools"4Android:layout_width= "Match_parent"5android:layout_height= "Match_parent"6android:paddingbottom= "@dimen/activity_vertical_margin"7android:paddingleft= "@dimen/activity_horizontal_margin"8android:paddingright= "@dimen/activity_horizontal_margin"9android:paddingtop= "@dimen/activity_vertical_margin"Tentools:context= "Com.hanqi.testapp2.TestActivity11" Oneandroid:orientation= "Vertical" > A<LinearLayout -Android:layout_width= "Match_parent" -android:layout_height= "Wrap_content" > the<TextView -Android:layout_width= "Wrap_content" -android:layout_height= "Wrap_content" -Android:text= "Education:"/> +<Spinner -Android:layout_width= "0DP" +android:layout_weight= "1" Aandroid:layout_height= "Wrap_content" atAndroid:id= "@+id/sp_1" ></Spinner> -</LinearLayout> -</LinearLayout>

. XML

1  Packagecom.hanqi.testapp2;2 3 Importandroid.app.Notification;4 ImportAndroid.app.NotificationManager;5 Importandroid.app.PendingIntent;6 Importandroid.content.Intent;7 ImportAndroid.os.Bundle;8 Importandroid.support.v7.app.AppCompatActivity;9 ImportAndroid.view.View;Ten ImportAndroid.widget.AdapterView; One ImportAndroid.widget.ArrayAdapter; A ImportAndroid.widget.AutoCompleteTextView; - ImportAndroid.widget.Spinner; - ImportAndroid.widget.Toast; the  -  Public classTestActivity11extendsappcompatactivity { -  - Spinner sp_1; + @Override -     protected voidonCreate (Bundle savedinstancestate) { +         Super. OnCreate (savedinstancestate); A Setcontentview (r.layout.activity_test11); at  -sp_1=(Spinner) Findviewbyid (r.id.sp_1); - //Drop- down list -         FinalString[] xl={"High School", "specialty", "undergraduate", "Master", "PhD"}; -  -Arrayadapter<string> sp=NewArrayadapter<string> ( This, R.LAYOUT.ARRAY_ADAPTER,XL); in  - Sp_1.setadapter (SP); to  +         //Monitor -Sp_1.setonitemselectedlistener (NewAdapterview.onitemselectedlistener () { the @Override *              Public voidOnitemselected (adapterview<?> Parent, view view,intPositionLongID) { $ Panax NotoginsengToast.maketext (TestActivity11. This, "Selected item is" +Xl[position], toast.length_short). Show (); -             } the  + @Override A              Public voidOnnothingselected (adapterview<?>parent) { the  +Toast.maketext (TestActivity11. This, "No choice", Toast.length_short). Show (); -  $             } $         }); -  -     } the}

. Java

View (views)--autocompletetextview, Spinner