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) { } }); } }
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