Android 获取手机手机验证码倒计时通用接口设计

最新推荐文章于 2024-02-05 13:54:24 发布

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#Android #倒计时

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本文介绍如何在Android应用中实现一个通用的验证码倒计时接口，方便多个模块调用，通过抽离出倒计时类MyCountdown，简化了代码结构并提高了复用性。实现了按钮状态的切换，包括启用和禁用，并通过MyApplication类进行全局Context的获取。

在最近的项目开发中，由于多个模块都涉及到获取手机验证码，在获取验证码的过程中有个60s的倒计时，于是将这个倒计时的方法抽成一个通用的接口，方便各个模块调用。

运行效果

编码实现

1. 项目结构

2. 定义全局Context的获取类MyApplication

public class MyApplication extends Application {


	private static MyApplication sInstance;

	@Override
	public void onCreate() {
		sInstance = this;
	}

	public static MyApplication getInstance() {
		return sInstance;
	}
}

2. 定义倒计时类MyCountdown

public class MyCountdown extends CountDownTimer {
	
	private Button mButton;
	
	/**
	 * 构造函数
	 * @param button：按钮
	 * @param millisInFuture:：倒计时总时间
	 * @param countDownInterval：倒计时时间间隔
	 */
	public MyCountdown(Button button, long millisInFuture, long countDownInterval) {
		super(millisInFuture, countDownInterval);
		
		mButton = button;
	}

	@Override
	public void onFinish() {
		// 获取验证码按钮可点击
		setButtonEnable();
	}

	@Override
	public void onTick(long millisUntilFinished) {
		// 获取验证码按钮不可点击,倒计时开始
		setButtonUnEnable(millisUntilFinished);
	}
	
	@SuppressWarnings("deprecation")
	public void setButtonEnable() {
		mButton.setEnabled(true);
		mButton.setText("重新获取");
		mButton.setBackgroundDrawable(MyApplication.getInstance().
				getResources().getDrawable(R.drawable.shape_button_red));
	}

	@SuppressWarnings("deprecation")
	public void setButtonUnEnable(long millisUntilFinished) {
		mButton.setEnabled(false);
		mButton.setText("重新获取(" + millisUntilFinished / 1000 + ")秒");
		mButton.setBackgroundDrawable(MyApplication.getInstance().
				getResources().getDrawable(R.drawable.shape_button_gray));
	}
}

3. 主布局文件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"
    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=".MainActivity" >

    <Button
        android:id="@+id/btn_get_code"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/shape_button_red"
        android:text="获取验证码"
        android:textColor="@color/light_gray" />

</RelativeLayout>

shape_button_red.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >

    <corners android:radius="6.0dip" />

    <solid android:color="@color/red" />

</shape>

shape_button_gray.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >

    <corners android:radius="6.0dip" />

    <solid android:color="@color/gray" />

</shape>

4. MainActivity.java

public class MainActivity extends Activity {

	private Button mGetCodeBtn;
	private MyCountdown mCounter;

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

		mGetCodeBtn = (Button) findViewById(R.id.btn_get_code);
		mGetCodeBtn.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				mCounter = new MyCountdown(mGetCodeBtn, 60 * 1000, 1000);
				mCounter.start();
			}
		});
	}

}

源码下载