/** * Created by Xia_焱 on 2017/5/7. */public class CountDownTimerUtils extends CountDownTimer {  private TextView mTextView;  /**   * @param millisInFuture  The number of millis in the future from the call   *             to {@link #start()} until the countdown is done and {@link #onFinish()}   *             is called.   * @param countDownInterval The interval along the way to receive   *             {@link #onTick(long)} callbacks.   */  public CountDownTimerUtils(TextView textView, long millisInFuture, long countDownInterval) {    super(millisInFuture, countDownInterval);    this.mTextView = textView;  }  @Override  public void onTick(long millisUntilFinished) {    mTextView.setClickable(false); //設置不可點擊    mTextView.setText(millisUntilFinished / 1000 + "秒后可重新發送"); //設置倒計時時間    mTextView.setBackgroundResource(R.drawable.bg_identify_code_press); //設置按鈕為灰    SpannableString spannableString = new SpannableString(mTextView.getText().toString());    ForegroundColorSpan span = new ForegroundColorSpan(Color.RED);    spannableString.setSpan(span, 0, 2, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);    mTextView.setText(spannableString);  }  @Override  public void onFinish() {    mTextView.setText("重新獲取驗證碼");    mTextView.setClickable(true);//重新獲得點擊    mTextView.setBackgroundResource(R.drawable.bg_identify_code_normal);  }}

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android">  <solid android:color="#C0C0C0" /> <!--填充色 透明-->  <corners android:radius="7dp" /> <!-- 圓角 --></shape>

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android">  <solid android:color="#2BAF2B" /> <!--填充色 透明-->  <corners android:radius="7dp" /> <!-- 圓角 --></shape>

 <TextView    android:id="@+id/tv_yzm"    android:layout_width="match_parent"    android:layout_marginTop="50dp"    android:layout_height="45dp"    android:background="@drawable/bg_identify_code_normal"    android:gravity="center"    android:text="點擊獲取驗證碼"    android:textColor="#FFF"    android:textSize="15dp" />

 private void initView() {    tv_yzm = (TextView) findViewById(R.id.tv_yzm);    tv_yzm.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View v) {        CountDownTimerUtils mCountDownTimerUtils = new CountDownTimerUtils(tv_yzm, 60000, 1000);        mCountDownTimerUtils.start();      }    });  }