How to add a hint to Spinner in Android

activity_main.xml
 <RelativeLayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:id="@+id/rl"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:padding="10dp"     tools:context=".MainActivity"     android:background="#60c4ff"     >     <Spinner         android:id="@+id/spinner"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         /> </RelativeLayout> 
spinner_item.xml
 <?xml version="1.0" encoding="utf-8"?> <TextView     xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:padding="10dp"     android:textStyle="italic"     android:fontFamily="sans-serif-medium"     /> 
MainActivity.java
 package com.cfsuman.me.androidcodesnippets;  import android.graphics.Color; import android.os.Bundle; import android.app.Activity; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Spinner; import android.widget.TextView; import android.widget.Toast;  import java.util.ArrayList; import java.util.Arrays; import java.util.List;   public class MainActivity extends Activity {      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          // Get reference of widgets from XML layout         jawaban Spinner spinner = (Spinner) findViewById(R.id.spinner);          // Initializing a String Array         String[] plants = new String[]{                 "Select an item...",                 "California sycamore",                 "Mountain mahogany",                 "Butterfly weed",                 "Carrot weed"         };          jawaban List<String> plantsList = new ArrayList<>(Arrays.asList(plants));          // Initializing an ArrayAdapter         jawaban ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(                 this,R.layout.spinner_item,plantsList){             @Override             public boolean isEnabled(int position){                 if(position == 0)                 {                     // Disable the first item from Spinner                     // First item will be use for hint                     return false;                 }                 else                 {                     return true;                 }             }             @Override             public View getDropDownView(int position, View convertView,                                         ViewGroup parent) {                 View view = super.getDropDownView(position, convertView, parent);                 TextView tv = (TextView) view;                 if(position == 0){                     // Set the hint text color gray                     tv.setTextColor(Color.GRAY);                 }                 else {                     tv.setTextColor(Color.BLACK);                 }                 return view;             }         };         spinnerArrayAdapter.setDropDownViewResource(R.layout.spinner_item);         spinner.setAdapter(spinnerArrayAdapter);          spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {             @Override             public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {                 String selectedItemText = (String) parent.getItemAtPosition(position);                 // If user change the default selection                 // First item is disable and it is used for hint                 if(position > 0){                     // Notify the selected item text                     Toast.makeText                             (getApplicationContext(), "Selected : " + selectedItemText, Toast.LENGTH_SHORT)                             .show();                 }             }              @Override             public void onNothingSelected(AdapterView<?> parent) {              }         });    } } 


More android examples

Komentar