android自定义view混淆,Android自定义View之倒计时分秒
项目中可能会需要倒计时的效果，今天给大家带来一个自定义倒计时：时分秒，分秒，秒三种效果：
1，上代码：
package com.gyq.countdown.view;
import android.content.Context;
import android.util.AttributeSet;
import android.widget.Chronometer;
import java.text.SimpleDateFormat;
/**
* 倒计时分秒
* author: gyq
* create at 2017/2/15 11:04
*/
public class CountDownView extends Chronometer{
private long mTime;
private long mNextTime;
private OnTimeCompleteListener mListener;
private SimpleDateFormat mTimeFormat;
public CountDownView(Context context) {
super(context);
}
public CountDownView(Context context, AttributeSet attrs) {
super(context, attrs);
mTimeFormat = new SimpleDateFormat("hh:mm:ss");
this.setOnChronometerTickListener(listener);
}
//重新启动计时
public void reStart(long _time_s)
{
if (_time_s == -1)
{
mNextTime = mTime;
}
else
{
mTime = mNextTime = _time_s;
}
this.start();
}
public void reStart()
{
reStart(-1);
}
//不建议方法名用onResume()或onPause()，容易和activity生命周期混淆
//继续计时
public void onResume()
{
this.start();
}
//暂停计时
public void onPause()
{
this.stop();
}
/**
* 设置时间格式
*
*@param pattern 计时格式
*/
public void setTimeFormat(String pattern)
{
mTimeFormat = new SimpleDateFormat(pattern);
}
public void setOnTimeCompleteListener(OnTimeCompleteListener l)
{
mListener = l;
}
OnChronometerTickListener listener = new OnChronometerTickListener()
{
@Override
public void onChronometerTick(Chronometer chronometer)
{
if (mNextTime <= 0)
{
if (mNextTime == 0)
{
CountDownView.this.stop();
if (null != mListener)
mListener.onTimeComplete();
}
mNextTime = 0;
updateTimeText();
return;
}
mNextTime--;
updateTimeText();
}
};
//初始化时间(秒)
public void initTime(long _time_s)
{
mTime = mNextTime = _time_s;
updateTimeText();
}
//初始化时间(分秒)
public void initTime(long _time_h,long _time_m,long _time_s) {
initTime(_time_h*3600+_time_m * 60 + _time_s);
}
private void updateTimeText()
{
this.setText(FormatMiss(mNextTime));
}
// 将秒转化成小时分钟秒
public String FormatMiss(long miss){
String hh=miss/3600>9?miss/3600+"":"0"+miss/3600;
String mm=(miss % 3600)/60>9?(miss % 3600)/60+"":"0"+(miss % 3600)/60;
String ss=(miss % 3600) % 60>9?(miss % 3600) % 60+"":"0"+(miss % 3600) % 60;
return hh+":"+mm+":"+ss;
}
public interface OnTimeCompleteListener
{
void onTimeComplete();
}
}
修改FormatMiss方法的返回值，就可以改变显示效果。
2，使用：
首先布局：
android:id="@+id/countdown_timer_hour"
android:layout_marginTop="10dp"
android:layout_width="wrap_content"
android:textColor="#88000000"
android:layout_gravity="center_horizontal"
android:layout_height="wrap_content"
android:textSize="16sp"/>
android:id="@+id/btn_start_hour"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:background="@color/colorPrimary"
android:gravity="center_horizontal"
android:padding="10dp"
android:text="小时倒计时"
android:textSize="16sp"/>
package com.gyq.countdown;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import com.gyq.countdown.view.CountDownView;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private CountDownView mTimerHour,mTimerMin,mTimerS;
private Button mStart_h,mStart_m,mStart_s;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
initListener();
mTimerHour.initTime(1,30,0);
mTimerMin.initTime(0,20,0);
mTimerS.initTime(30);
}
private void initView() {
mTimerHour = (CountDownView)findViewById(R.id.countdown_timer_hour);
mTimerMin = (CountDownView)findViewById(R.id.countdown_timer_min);
mTimerS = (CountDownView)findViewById(R.id.countdown_timer_s);
mStart_h = (Button)findViewById(R.id.btn_start_hour);
mStart_m = (Button)findViewById(R.id.btn_start_min);
mStart_s = (Button)findViewById(R.id.btn_start_s);
}
private void initListener() {
mStart_h.setOnClickListener(this);
mStart_m.setOnClickListener(this);
mStart_s.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_start_hour :
mTimerHour.start();
mTimerHour.setOnTimeCompleteListener(new CountDownView.OnTimeCompleteListener() {
@Override
public void onTimeComplete() {
Toast.makeText(MainActivity.this, "计时完成!", Toast.LENGTH_LONG).show();
}
});
break;
case R.id.btn_start_min :
mTimerMin.start();
mTimerMin.setOnTimeCompleteListener(new CountDownView.OnTimeCompleteListener() {
@Override
public void onTimeComplete() {
Toast.makeText(MainActivity.this, "计时完成!", Toast.LENGTH_LONG).show();
}
});
break;
case R.id.btn_start_s :
mTimerS.start();
mTimerS.setOnTimeCompleteListener(new CountDownView.OnTimeCompleteListener() {
@Override
public void onTimeComplete() {
Toast.makeText(MainActivity.this, "计时完成!", Toast.LENGTH_LONG).show();
}
});
break;
}
}
}