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1. 验证码输入框和获取验证码按钮布局

xml代码：

        <LinearLayout

            android:layout_width="match_parent"

            android:layout_height="50dp"

            android:background="@color/white"

            android:orientation="horizontal" >

            <EditText

                android:id="@+id/phonetext"

                android:layout_width="0dp"

                android:layout_height="match_parent"

                android:layout_weight="1"

                android:layout_marginLeft="15dp"

                android:layout_gravity="center_vertical"

                android:inputType="number"

                android:hint="请输入短信验证码"

                android:background="@null"/>

            <Button

                android:id="@+id/timebutton"

                android:layout_width="wrap_content"

                android:layout_height="30dp"

                android:layout_marginRight="15dp"

                android:layout_marginTop="10dp"

                android:textSize="16dp"

                android:background="@drawable/tv_timemessage_bg"

                android:text="获取"

                />

        </LinearLayout>

效果如下：

2. 根据id设置Button点击事件触发倒计时

JAVA代码：

/**

 * Created by fby on 2017/9/11.

 */

public class ChargepsdActivity extends Activity {

    private Button timeButton;

    @Override

    protected void onCreate(@Nullable Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_chargepsd);

        timeButton = (Button) findViewById(R.id.timebutton);

        //new倒计时对象,总共的时间,每隔多少秒更新一次时间

        final MyCountDownTimer myCountDownTimer = new MyCountDownTimer(60000,1000);

        //设置Button点击事件触发倒计时

        timeButton.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                myCountDownTimer.start();

            }

        });

    }

3. 倒计时函数

    //倒计时函数

    private class MyCountDownTimer extends CountDownTimer {

        public MyCountDownTimer(long millisInFuture, long countDownInterval) {

            super(millisInFuture, countDownInterval);

        }

        //计时过程

        @Override

        public void onTick(long l) {

            //防止计时过程中重复点击

            timeButton.setClickable(false);

            timeButton.setText(l/1000+"秒");

        }

        //计时完毕的方法

        @Override

        public void onFinish() {

            //重新给Button设置文字

            timeButton.setText("重新获取");

            //设置可点击

            timeButton.setClickable(true);

        }

    }

}

4. 清除倒计时函数，解决验证码输入正确后停止计时

private void clearTimer() {

        if (task != null) {

            task.cancel();

            task = null;

        }

        if (timer != null) {

            timer.cancel();

            timer = null;

        }

    }