计时器
2014-05-05 16:19
106 查看
这个简易计时器,实现了简单的计时,点击开始按钮开始计时,点击停止按钮就停止,屏幕现实开始到停止的时间差。在run()方法里已换算成时分秒。
参考博客:http://blog.csdn.net/ithomer/article/details/6903084、http://blog.csdn.net/m_changgong/article/details/6844441
代码仅供参考:
strings.xml
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<string
name="app_name">计时器</string>
<string
name="text_time">00:00</string>
<string
name="button_start">记录</string>
<string
name="button_stop">取消</string>
activity_main.xml
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<?xml
version="1.0"
encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF"
android:orientation="vertical"
>
<TextView
android:id="@+id/time"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:textSize="30sp"
android:text="@string/text_time"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_margin="20dp"
android:orientation="horizontal"
>
<Button
android:id="@+id/button_start"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_gravity="top|right"
android:text="@string/button_start"
/>
<Button
android:id="@+id/button_stop"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_gravity="top|right"
android:text="@string/button_stop"
/>
</RelativeLayout>
</RelativeLayout>
MainActivity.java
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import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
/**
* 计时器
*/
public class MainActivity
extends Activity implements OnClickListener {
private TextView timer_time;
private int count =
0;
private int s =
0;
private int m =
0;
private int h =
0;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
timer_time = (TextView) findViewById(R.id.time);
// handler.postDelayed(runnable, 1000);
this.findViewById(R.id.button_start).setOnClickListener(this);
this.findViewById(R.id.button_stop).setOnClickListener(this);
}
private Handler handler =
new Handler();
private Runnable runnable =
new Runnable() {
@Override
public void run() {
String time = "";
count++;
if (count <
60) { // 小于60s
if (count < 10) {
time = "00:0" + count;
} else {
time = "00:" + count;
}
} else {
// 大于等于60s
m = count / 60;
// 取整数,分钟
s = count % 60;
// 取余数,秒数
if (m < 10) {
// 小于10分钟
if (s <
10) {
time = "0" + m +
":0" + s;
} else {
time = "0" + m +
":" + s;
}
} else {
if (s <
10) {
time = m + ":0" + s;
} else {
time = m + ":" + s;
}
}
if (m >
60) {
h = m / 60;
time = h + ":" + m +
":" + s;
}
}
timer_time.setText(time);
handler.postDelayed(this,
1000);
}
};
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button_start:
handler.postDelayed(runnable, 1000);
break;
case R.id.button_stop:
count = 0;
handler.removeCallbacks(runnable);
break;
default:
break;
}
}
}
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<pre
class="java"
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snippet_file_name="blog_20140505_4_7564325"
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code_snippet_id="327584"></pre>
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参考博客:http://blog.csdn.net/ithomer/article/details/6903084、http://blog.csdn.net/m_changgong/article/details/6844441
代码仅供参考:
strings.xml
[html] view plaincopyprint?
<string
name="app_name">计时器</string>
<string
name="text_time">00:00</string>
<string
name="button_start">记录</string>
<string
name="button_stop">取消</string>
<string name="app_name">计时器</string> <string name="text_time">00:00</string> <string name="button_start">记录</string> <string name="button_stop">取消</string>
activity_main.xml
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<?xml
version="1.0"
encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF"
android:orientation="vertical"
>
<TextView
android:id="@+id/time"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:textSize="30sp"
android:text="@string/text_time"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_margin="20dp"
android:orientation="horizontal"
>
<Button
android:id="@+id/button_start"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_gravity="top|right"
android:text="@string/button_start"
/>
<Button
android:id="@+id/button_stop"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_gravity="top|right"
android:text="@string/button_stop"
/>
</RelativeLayout>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#FFFFFF" android:orientation="vertical" > <TextView android:id="@+id/time" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:textSize="30sp" android:text="@string/text_time" /> <RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_margin="20dp" android:orientation="horizontal" > <Button android:id="@+id/button_start" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_gravity="top|right" android:text="@string/button_start" /> <Button android:id="@+id/button_stop" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_gravity="top|right" android:text="@string/button_stop" /> </RelativeLayout> </RelativeLayout>
MainActivity.java
[java] view plaincopyprint?
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
/**
* 计时器
*/
public class MainActivity
extends Activity implements OnClickListener {
private TextView timer_time;
private int count =
0;
private int s =
0;
private int m =
0;
private int h =
0;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
timer_time = (TextView) findViewById(R.id.time);
// handler.postDelayed(runnable, 1000);
this.findViewById(R.id.button_start).setOnClickListener(this);
this.findViewById(R.id.button_stop).setOnClickListener(this);
}
private Handler handler =
new Handler();
private Runnable runnable =
new Runnable() {
@Override
public void run() {
String time = "";
count++;
if (count <
60) { // 小于60s
if (count < 10) {
time = "00:0" + count;
} else {
time = "00:" + count;
}
} else {
// 大于等于60s
m = count / 60;
// 取整数,分钟
s = count % 60;
// 取余数,秒数
if (m < 10) {
// 小于10分钟
if (s <
10) {
time = "0" + m +
":0" + s;
} else {
time = "0" + m +
":" + s;
}
} else {
if (s <
10) {
time = m + ":0" + s;
} else {
time = m + ":" + s;
}
}
if (m >
60) {
h = m / 60;
time = h + ":" + m +
":" + s;
}
}
timer_time.setText(time);
handler.postDelayed(this,
1000);
}
};
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button_start:
handler.postDelayed(runnable, 1000);
break;
case R.id.button_stop:
count = 0;
handler.removeCallbacks(runnable);
break;
default:
break;
}
}
}
import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.view.View; import android.view.View.OnClickListener; import android.widget.TextView; /** * 计时器 */ public class MainActivity extends Activity implements OnClickListener { private TextView timer_time; private int count = 0; private int s = 0; private int m = 0; private int h = 0; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); timer_time = (TextView) findViewById(R.id.time); // handler.postDelayed(runnable, 1000); this.findViewById(R.id.button_start).setOnClickListener(this); this.findViewById(R.id.button_stop).setOnClickListener(this); } private Handler handler = new Handler(); private Runnable runnable = new Runnable() { @Override public void run() { String time = ""; count++; if (count < 60) { // 小于60s if (count < 10) { time = "00:0" + count; } else { time = "00:" + count; } } else { // 大于等于60s m = count / 60; // 取整数,分钟 s = count % 60; // 取余数,秒数 if (m < 10) { // 小于10分钟 if (s < 10) { time = "0" + m + ":0" + s; } else { time = "0" + m + ":" + s; } } else { if (s < 10) { time = m + ":0" + s; } else { time = m + ":" + s; } } if (m > 60) { h = m / 60; time = h + ":" + m + ":" + s; } } timer_time.setText(time); handler.postDelayed(this, 1000); } }; @Override public void onClick(View v) { switch (v.getId()) { case R.id.button_start: handler.postDelayed(runnable, 1000); break; case R.id.button_stop: count = 0; handler.removeCallbacks(runnable); break; default: break; } } }
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<pre
class="java"
name="code"
snippet_file_name="blog_20140505_4_7564325"
code_snippet_id="327584"><pre
class="html"
name="code"
snippet_file_name="blog_20140505_4_7564325"
code_snippet_id="327584"><pre
snippet_file_name="blog_20140505_4_7564325"
code_snippet_id="327584"></pre>
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