Question

在我的应用程序中，我想计算从北方的具体位置（纬度和长度）的角度。有任何方法来计算这个。实际上我发现把手机的方向，但我想得到从北方的位置角度。这是我的代码。请提出任何相关的解决方案。谢谢

   myAzimuth=Math.round(event.values[0]);
            myPitch=Math.round(event.values[1]);
            myRoll=Math.round(event.values[2]);
         Toast.makeText(this, "Value"+myAzimuth, Toast.LENGTH_SHORT).show();        
        if(myAzimuth<22){
        Toast.makeText(this, "North Direction", Toast.LENGTH_SHORT).show();     
        }

          else if (myAzimuth >= 22 && myAzimuth < 67)
              Toast.makeText(this, "North East", Toast.LENGTH_SHORT).show();        
          else if (myAzimuth >= 67 && myAzimuth < 112)
              Toast.makeText(this, "East Direction", Toast.LENGTH_SHORT).show();        
          else if (myAzimuth >= 112 && myAzimuth < 157)
              Toast.makeText(this, "South east Direction", Toast.LENGTH_SHORT).show();      
          else if (myAzimuth >= 157 && myAzimuth < 202)
              Toast.makeText(this, "South Direction", Toast.LENGTH_SHORT).show();       
          else if (myAzimuth >= 202 && myAzimuth < 247)
              Toast.makeText(this, "South west Direction", Toast.LENGTH_SHORT).show();      
          else if (myAzimuth >= 247 && myAzimuth < 292)
              Toast.makeText(this, "west Direction", Toast.LENGTH_SHORT).show();        
          else if (myAzimuth >= 292 && myAzimuth < 337)
              Toast.makeText(this, "North west Direction", Toast.LENGTH_SHORT).show();      
          else if (myAzimuth >= 337)
              Toast.makeText(this, "North Direction", Toast.LENGTH_SHORT).show();

Answer 1

根据“北方位置角”的含义，有几种可能的解决方案。一个是这个：

final float[] results= new float[3];
// The computed distance in meters is stored in results[0].
// If results has length 2 or greater, the initial bearing is stored in results[1].
// If results has length 3 or greater, the final bearing is stored in results[2].
Location.distanceBetween(refLat, refLong, 90.0f, 0.0f, results);
final float bearing = results[1];

您可以从参考位置到北极获得路线轴承。在沿着最短距离航线的路线上，轴承/航向会发生变化。

甚至更好，如Konstantin Pribluda所建议的那样（见下面的评论）

final float bearing = 0.0f;

如何在Android中获取北方任何地理位置的角度？

1 个答案: