<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Boiling_cola的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/Boiling_cola</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; Boiling_cola]]></copyright><item><title><![CDATA[版本升级Installation error: INSTALL_FAILED_VERSION_DOWNGRADE问题解决]]></title><link>https://blog.youkuaiyun.com/Boiling_cola/article/details/77099601</link><guid>https://blog.youkuaiyun.com/Boiling_cola/article/details/77099601</guid><author>Boiling_cola</author><pubDate>Fri, 11 Aug 2017 16:21:09 +0800</pubDate><description><![CDATA[问题：在测试安装应用时，adb install报错： 
Installation error: INSTALL_FAILED_VERSION_DOWNGRADE原因：已经安装的应用的版本比想在要安装的版本高。解决办法：1 卸载原来的应用，重新安装；2 修改AndroidManifest.xml 的versionCode。versionCode越大版本越高。]]></description><category></category></item><item><title><![CDATA[关于虚拟机关机/重启后自动还原的问题解决方案]]></title><link>https://blog.youkuaiyun.com/Boiling_cola/article/details/76451555</link><guid>https://blog.youkuaiyun.com/Boiling_cola/article/details/76451555</guid><author>Boiling_cola</author><pubDate>Mon, 31 Jul 2017 16:55:49 +0800</pubDate><description><![CDATA[关于虚拟机关机/重启后自动还原的问题解决方案问题：最近新装的虚拟机ubuntu系统，在关闭虚拟机再次启动的时候发现传输的文件和安装的软件全部消失了，对ubuntu系统所做的更改全部丢失了，系统恢复到了刚安装的状态。解决办法：1. 虚拟机设置——选项——快照网上搜罗了一圈，大部分人的解释是虚拟机设置——选项——快照：选择了“恢复到快照（R）”: 
 
检查了一下发现我的设置并没有这么选择，这个方法不适]]></description><category></category></item><item><title><![CDATA[打开和关闭HDMI输出方法]]></title><link>https://blog.youkuaiyun.com/Boiling_cola/article/details/76233909</link><guid>https://blog.youkuaiyun.com/Boiling_cola/article/details/76233909</guid><author>Boiling_cola</author><pubDate>Fri, 28 Jul 2017 11:02:59 +0800</pubDate><description><![CDATA[打开和关闭HDMI输出方法方法：echo r c 10c8 > /sys/class/amlogic/debug  // get VALUE执行后会有如下打印：[ 1344.943992@0] CBUS[0x10c8]=0xc005043d//关闭echo w 0 c 10c8 > /sys/class/amlogic/debug 
echo hpd_lock1 > /sys/class/amhdm]]></description><category></category></item><item><title><![CDATA[AlarmManager的Constant值]]></title><link>https://blog.youkuaiyun.com/Boiling_cola/article/details/76222262</link><guid>https://blog.youkuaiyun.com/Boiling_cola/article/details/76222262</guid><author>Boiling_cola</author><pubDate>Thu, 27 Jul 2017 21:48:55 +0800</pubDate><description><![CDATA[Constants 
ACTION_NEXT_ALARM_CLOCK_CHANGED 
added in API level 21String ACTION_NEXT_ALARM_CLOCK_CHANGEDBroadcast Action: Sent after the value returned by getNextAlarmClock() has changed.This is a prote]]></description><category></category></item><item><title><![CDATA[获取版本信息（名称+版本号等）]]></title><link>https://blog.youkuaiyun.com/Boiling_cola/article/details/76147232</link><guid>https://blog.youkuaiyun.com/Boiling_cola/article/details/76147232</guid><author>Boiling_cola</author><pubDate>Wed, 26 Jul 2017 15:09:10 +0800</pubDate><description><![CDATA[public static String getversionApk(Context context,String path)
    {
         String archiveFilePath = path + File.separator + "apkname.apk";
        PackageManager pm = context.getPackageManager();]]></description><category></category></item><item><title><![CDATA[判断当前应用是否启动/是否在前台]]></title><link>https://blog.youkuaiyun.com/Boiling_cola/article/details/76147108</link><guid>https://blog.youkuaiyun.com/Boiling_cola/article/details/76147108</guid><author>Boiling_cola</author><pubDate>Wed, 26 Jul 2017 15:02:05 +0800</pubDate><description><![CDATA[/**
     *判断当前应用程序处于前台还是后台
     */
    public synchronized static boolean isAppInFront(final Context context) {
        ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_]]></description><category></category></item><item><title><![CDATA[利用MIME类型根据apk路径自动安装apk之application/vnd.android.package-archive]]></title><link>https://blog.youkuaiyun.com/Boiling_cola/article/details/75277202</link><guid>https://blog.youkuaiyun.com/Boiling_cola/article/details/75277202</guid><author>Boiling_cola</author><pubDate>Tue, 18 Jul 2017 10:30:33 +0800</pubDate><description><![CDATA[根据apk路径自动安装apk    application/vnd.android.package-archive 
什么是MIME类型]]></description><category></category></item><item><title><![CDATA[Java math.ceil 函数用法]]></title><link>https://blog.youkuaiyun.com/Boiling_cola/article/details/75098304</link><guid>https://blog.youkuaiyun.com/Boiling_cola/article/details/75098304</guid><author>Boiling_cola</author><pubDate>Fri, 14 Jul 2017 10:36:06 +0800</pubDate><description><![CDATA[Java math.ceil 函数用法    /**
     * Returns the double conversion of the most negative (closest to negative
     * infinity) integer value greater than or equal to the argument.
     * <p>
     * Special]]></description><category></category></item><item><title><![CDATA[windows下SDL使用ndk-build编译失败问题]]></title><link>https://blog.youkuaiyun.com/Boiling_cola/article/details/72874904</link><guid>https://blog.youkuaiyun.com/Boiling_cola/article/details/72874904</guid><author>Boiling_cola</author><pubDate>Tue, 06 Jun 2017 09:40:58 +0800</pubDate><description><![CDATA[错误代码：make: * [obj/local/armeabi/objs/SDL2/src/audio/SDL_wave.o] Error 70解决方案： 
在jni目录下的Application.mk中添加一行：NDK_TOOLCHAIN_VERSION=4.9(GCC版本)。]]></description><category></category></item><item><title><![CDATA[Android访问网页的两种方式]]></title><link>https://blog.youkuaiyun.com/Boiling_cola/article/details/72771661</link><guid>https://blog.youkuaiyun.com/Boiling_cola/article/details/72771661</guid><author>Boiling_cola</author><pubDate>Fri, 26 May 2017 16:54:02 +0800</pubDate><description><![CDATA[访问网页是APP最常用的功能，正如大家所知，加载和显示网页通常都是由浏览器来完成的，所以打开网页的最简单的方法就是调用手机系统浏览器。然而大部分时候用户的需求里明确指出，不允许打开系统浏览器。Android考虑到这种需求，提供了一个WebView控件，省去了重新编写一个浏览器的麻烦。]]></description><category></category></item><item><title><![CDATA[关于Android模拟器获取root权限的解决办法]]></title><link>https://blog.youkuaiyun.com/Boiling_cola/article/details/71656934</link><guid>https://blog.youkuaiyun.com/Boiling_cola/article/details/71656934</guid><author>Boiling_cola</author><pubDate>Thu, 11 May 2017 18:02:34 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[PendingIntent]]></title><link>https://blog.youkuaiyun.com/Boiling_cola/article/details/71601515</link><guid>https://blog.youkuaiyun.com/Boiling_cola/article/details/71601515</guid><author>Boiling_cola</author><pubDate>Thu, 11 May 2017 10:42:09 +0800</pubDate><description><![CDATA[PendingIntent跟Intent类似，字面意思可以看作“意图”，从功能上看基本相同，他们都可以用来启动活动、服务以及发送广播等；不同点在于，Intent倾向于及时执行某个动作，而PendingIntent比Intent多了个等待的过程，它更倾向于在某个合适的实际实行指定的动作，因此可以将它简单理解成延迟执行的Intent。
根据google的API:

A description o]]></description><category></category></item><item><title><![CDATA[SystemClock.sleep()方法与Thread.sleep()方法的区别]]></title><link>https://blog.youkuaiyun.com/Boiling_cola/article/details/69568996</link><guid>https://blog.youkuaiyun.com/Boiling_cola/article/details/69568996</guid><author>Boiling_cola</author><pubDate>Fri, 07 Apr 2017 16:40:17 +0800</pubDate><description><![CDATA[最近在学习一个项目代码的过程中发现了一个许多延时的地方使用了sleep()方法，不禁感到奇怪，之前因为Thread.sleep()方法导致假死崩溃的情况让我吸取了教训，前辈是不会犯这种小错误的，心想难道SystemClock.sleep()有什么特殊之处？于是自己去翻看了下API。

sleep

added in API level 1

void sleep (long ms)]]></description><category></category></item></channel></rss>