20170117 Spinner功能練習 (訂票系統_下拉式選單)
//Spinner功能練習(訂票系統_下拉式選單)
//20170117 劉彥廷
MainActivity.java
package com.example.user.myapplication23;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Spinner;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
private TextView txv;
private Spinner cinema;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 取得TextView物件 取得Spinner物件
txv = (TextView)findViewById(R.id.txv);
cinema = (Spinner)findViewById(R.id.cinema);
}
public void order(View v){
//取得串字資源
String[] cinemas =getResources().
getStringArray(R.array.cinemas);
//取得Spinner中被選取項目的位置
int index=cinema.getSelectedItemPosition();
//顯示被取項目
txv.setText("訂"+cinemas[index]+"的票");
}
}
//20170117 劉彥廷
MainActivity.java
package com.example.user.myapplication23;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Spinner;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
private TextView txv;
private Spinner cinema;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 取得TextView物件 取得Spinner物件
txv = (TextView)findViewById(R.id.txv);
cinema = (Spinner)findViewById(R.id.cinema);
}
public void order(View v){
//取得串字資源
String[] cinemas =getResources().
getStringArray(R.array.cinemas);
//取得Spinner中被選取項目的位置
int index=cinema.getSelectedItemPosition();
//顯示被取項目
txv.setText("訂"+cinemas[index]+"的票");
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.user.myapplication23.MainActivity"
android:background="#FFFFFF">
<Spinner
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:id="@+id/cinema"
android:entries="@array/cinemas" />
<Button
android:text="@string/Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="85dp"
android:id="@+id/button"
android:onClick="order" />
<TextView
android:text="@string/TextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/button"
android:layout_centerHorizontal="true"
android:layout_marginTop="23dp"
android:id="@+id/txv"
android:shadowColor="#205CEA"
android:textSize="24sp"
android:textColor="#EA2029" />
</RelativeLayout>
strings.xml
<resources>
<string name="app_name">訂票系統(No23)</string>
<string name="Button">訂票</string>
<string name="TextView">未訂票</string>
<string-array name="cinemas">
<item>台北影城</item>
<item>桃園影城</item>
<item>台中影城</item>
<item>高雄影城</item>
</string-array>
</resources>
YnanlaWurga Chris Swindle https://wakelet.com/wake/zqmInY0puIolKaWKp5W0N
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