本Android源码演示Proximity Alert接近某区域触发警报的示例源代码，程序中将定义接近某区域的大致经度、纬度、定义接近某区域的半径(5公里)、定义接近某区域后触发的PendingIntent，添加接近警告等。-Sample source code, the program will be defined the Android source code demo Proximity Alert alarm is triggered close to an area close to an area roughly longitude, latitude, defined radius (5 km) close to a region, defined nearly triggered a regional PendingIntent to add close to the warnings.