[Android] 按鈕(Button)的點擊及長按

Button點擊(click)和長按(long press)的用法
主要差別在OnClickListener()及OnLongClickListener二個方法

MainActivity.java

package com.example.btn;

import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  // 點擊寫法
  Button Btn1 = (Button) findViewById(R.id.button1);
  Btn1.setOnClickListener(new View.OnClickListener() {
   public void onClick(View v) {
    // 要做的事寫在這裡
    Toast.makeText(getApplicationContext(), "點擊", Toast.LENGTH_LONG)
      .show();

   }

  });

  // 長按寫法
  Btn1.setOnLongClickListener(new View.OnLongClickListener() {
   @Override
   public boolean onLongClick(View v) {
    // 要做的事寫在這裡
    Toast.makeText(getApplicationContext(), "長按", Toast.LENGTH_LONG)
      .show();

    return true;
   }
  });

 }
}

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="@string/hello_world" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/textView1"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="39dp"
        android:text="Button" />

</RelativeLayout>

結果: