小编use*_*907的帖子

嗨iam目前正在开发一个Android应用程序,它在主要活动中有两个列表视图.我想要的是禁用两个列表的滚动并允许整个页面只滚动,有什么办法可以帮助....我的代码包com.example.listviewdemo;

 import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
 import android.view.View;
 import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.ListView;
 import android.widget.Toast;

public class MainActivity extends Activity {

ListView list,list2;
String[] name={"Happy","always","try","hard","you will","get it!","Believe","in","God","everything","will","work well!","Believe","in","God","everything","will","work well!"};
String[] name2={"Believe","in","God","everything","will","work well!","Believe","in","God","everything","will","work well!"};
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    list = (ListView) findViewById(R.id.listview);
    list2 = (ListView) findViewById(R.id.listview2);
    list.setAdapter(new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_list_item_1,name));
  list2.setAdapter(new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_list_item_1,name2));



    list.setOnItemClickListener(new AdapterView.OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                long id) {
            // TODO Auto-generated method stub

            Toast.makeText(getBaseContext(), …

你好，我目前正在开发一个 Android 应用程序，该应用程序将商店的详细信息存储在 SQL 数据库中，用户使用该应用程序来搜索周围的商店。

我找到了一个称为半正矢的公式来查找具有纬度和经度值的两点之间的距离。

    SELECT id, ( 3959 * acos( cos( radians(37) ) * cos( radians( lat ) ) * cos( radians(         lng ) - radians(-122) ) + sin( radians(37) ) * sin( radians( lat ) ) ) ) AS distance FROM     markers HAVING distance < 25 ORDER BY distance LIMIT 0 , 20;

但我对此感到困惑，我不知道哪个 lat 和 lng 值指的是什么！如果有人可以重写上面的代码，使我的用户对店主拥有位置 lat1 和 lng1，那么它就是 lat2 和 lng2。你也能告诉我那是什么吗

  acos