小编Hen*_*ang的帖子

我正在为android创建一个gps应用程序!现在我偶然发现了一个问题.应用程序根本没有启动...有关如何解决此问题的任何想法？

04-05 12:54:50.877: D/dalvikvm(540): Not late-enabling CheckJNI (already on)
04-05 12:54:51.018: I/dalvikvm(540): Turning on JNI app bug workarounds for target SDK version 5...
04-05 12:54:51.417: I/dalvikvm(540): Could not find method org.acra.ACRA.init, referenced from method com.kulplex.gaia.GaiaApp.onCreate
04-05 12:54:51.417: W/dalvikvm(540): VFY: unable to resolve static method 652: Lorg/acra/ACRA;.init (Landroid/app/Application;)V
04-05 12:54:51.417: D/dalvikvm(540): VFY: replacing opcode 0x71 at 0x0000
04-05 12:54:51.457: D/AndroidRuntime(540): Shutting down VM
04-05 12:54:51.457: W/dalvikvm(540): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
04-05 12:54:51.477: E/AndroidRuntime(540): FATAL EXCEPTION: main
04-05 12:54:51.477: …

我正在使用以下sql代码找出最接近设定坐标的'ALL'poi,但我想找出特定的poi而不是所有的poi.当我尝试使用where子句时,我得到一个错误,它不起作用,这是我目前卡住的地方,因为我只使用一个表用于所有poi的所有坐标.

SET @orig_lat=55.4058;  
SET @orig_lon=13.7907; 
SET @dist=10;
SELECT 
    *, 
    3956 * 2 * ASIN(SQRT(POWER(SIN((@orig_lat -abs(latitude)) * pi()/180 / 2), 2) 
    + COS(@orig_lat * pi()/180 ) * COS(abs(latitude) * pi()/180) 
    * POWER(SIN((@orig_lon - longitude) * pi()/180 / 2), 2) )) as distance 
FROM geo_kulplex.sweden_bobo
HAVING distance < @dist 
ORDER BY distance limit 10;