今天給大家?guī)硪粋€(gè)新的控件——驗(yàn)證碼倒計(jì)時(shí),先看下效果圖
1 效果演示

2 使用方式
<com.landptf.view.CountDownM android:id="@+id/cdm_identifying_code" android:layout_width="wrap_content" android:layout_height="50dp" android:layout_alignParentRight="true" android:text="獲取驗(yàn)證碼" landptf:backColor="@color/colorPrimary" landptf:countDownSeconds="10"/>CountDownM cdmIdentifyingCode = (CountDownM) findViewById(R.id.cdm_identifying_code);if (cdmIdentifyingCode != null) { cdmIdentifyingCode.setOnClickListener(new CountDownM.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(CountDownMTestActivity.this, "驗(yàn)證碼發(fā)送成功", Toast.LENGTH_SHORT).show(); } });}以上幾行代碼即可實(shí)現(xiàn)倒計(jì)時(shí)的功能,這里面我們可以設(shè)置背景色以及倒計(jì)時(shí)的總時(shí)長。
3 實(shí)現(xiàn)方法
/** * Created by landptf on 2017/03/15. * 獲取驗(yàn)證碼倒計(jì)時(shí)控件 */public class CountDownM extends ButtonM { private OnClickListener onClickListener = null; private CountDownTimer countDownTimer; /** * 倒計(jì)時(shí)總時(shí)長 */ private int countDownSeconds = 60; /** * 按鈕的背景色 */ private int backColor = 0; public interface OnClickListener{ void onClick(View v); } public CountDownM(Context context) { this(context, null); } public CountDownM(Context context, AttributeSet attrs) { this(context, attrs, 0); } public CountDownM(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.countDownM, defStyle, 0); if (a != null) { //設(shè)置背景色 ColorStateList colorList = a.getColorStateList(R.styleable.countDownM_backColor); if (colorList != null) { backColor = colorList.getColorForState(getDrawableState(), 0); if (backColor != 0) { setBackColor(backColor); } } else { setBackColor(getResources().getColor(R.color.mainColor)); } //獲取倒計(jì)時(shí)總時(shí)長 int countDownSeconds = a.getInteger(R.styleable.countDownM_countDownSeconds, 60); setCountDownSeconds(countDownSeconds); a.recycle(); } //設(shè)置文字顏色 setTextColor(getResources().getColor(android.R.color.white)); //設(shè)置位置相關(guān)屬性 setGravity(Gravity.CENTER); setPadding(ConvertM.dp2px(context, 8), 0, ConvertM.dp2px(context, 8), 0); setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (onClickListener != null) { onClickListener.onClick(v); } //點(diǎn)擊后開始計(jì)時(shí) start(); } }); } /** * 設(shè)置倒計(jì)時(shí)總時(shí)長 * @param countDownSeconds */ public void setCountDownSeconds(int countDownSeconds){ this.countDownSeconds = countDownSeconds; } /** * 設(shè)置背景色 * @param backColor */ @Override public void setBackColor(int backColor) { this.backColor = backColor; super.setBackColor(backColor); } /** * 停止倒計(jì)時(shí) */ public void stop(){ countDownTimer.cancel(); resetButton(); } public void setOnClickListener(OnClickListener l){ this.onClickListener = l; } private void start(){ setEnabled(false);//設(shè)置不能點(diǎn)擊 countDownTimer = new CountDownTimer(countDownSeconds * 1000, 1000) { @Override public void onTick(long millisUntilFinished) { setText(millisUntilFinished / 1000 + getResources().getString(R.string.count_down_m_recapture_after));//設(shè)置倒計(jì)時(shí)時(shí)間 //設(shè)置按鈕為灰色,這時(shí)是不能點(diǎn)擊的 CountDownM.super.setBackColor(Color.GRAY); Spannable span = new SpannableString(getText().toString());//獲取按鈕的文字 span.setSpan(new ForegroundColorSpan(Color.RED), 0, 2, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);//講倒計(jì)時(shí)時(shí)間顯示為紅色 setText(span); } @Override public void onFinish() { resetButton(); } }; countDownTimer.start(); } private void resetButton(){ setText(getResources().getString(R.string.count_down_m_recapture)); setEnabled(true);//重新獲得點(diǎn)擊 if (backColor != 0) { setBackColor(backColor);//還原背景色 } else { setBackColor(getResources().getColor(R.color.mainColor));//還原背景色 } }} 代碼比較短,這里面繼承了ButtonM,有不了解的可以看一下我之前的博客
Android自定義控件系列(一)—Button七十二變
全部代碼已托管到開源中國的碼云上,歡迎下載,地址:https://git.oschina.net/landptf/landptf.git
以上就是本文的全部內(nèi)容,希望對(duì)大家的學(xué)習(xí)有所幫助,也希望大家多多支持VEVB武林網(wǎng)。
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