activity_main.xml
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<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:orientation="vertical" tools:context=".MainActivity"> <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Button1" /> <Button android:id="@+id/button2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Button2" /> </LinearLayout> |
MainActivity.java
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package com.phaisarn.myapplication; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.Toast; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Button button1 = findViewById(R.id.button1); button1.setOnClickListener(myTouchMethod); Button button2 = findViewById(R.id.button2); button2.setOnClickListener(myTouchMethod); } View.OnClickListener myTouchMethod = new View.OnClickListener() { @Override public void onClick(View view) { Toast.makeText(getApplicationContext(), "Hello World!", Toast.LENGTH_SHORT).show(); } }; } |
บรรทัดที่ 17,20 : เรียกใช้ myTouchMethod