大家
我的项目有问题
这是我的search.java代码
import java.util.ArrayList;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;
public class Search extends Activity {
TextView error,br2;
Spinner namjal2;
String i,returnString2,jln;
String[] jalan = {"A.Yani", "Ambengan", "Anjasmoro","Baliwerti","Basuki Rahmat","Bintoro","Ciliwung","Citarum","Citandui","Darmo Daya","Darmokali","Dharmawangsa","Dinoyo","Embong Kemiri","Embong Malang"};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.search);
br2=(TextView)findViewById(R.id.berita2);
namjal2=(Spinner)findViewById(R.id.namjalSearch);
ArrayAdapter<String> aa = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, jalan);
aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
namjal2.setAdapter(aa);
}
public void clickHandler(View view){
Intent a = null;
switch (view.getId()){
case R.id.find:
jln = jalan[namjal2.getSelectedItemPosition()];
ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>();
postParameters.add(new BasicNameValuePair("nama_jalan", jln));
/* String valid = "1";*/
String response = null;
try {
response = CustomHttpClient.executeHttpPost("http://192.168.1.3/android/searchInfo.php", postParameters);
String result = response.toString();
//parse json data
try{
returnString2 = "";
JSONArray jArray = new JSONArray(result);
for(int i=0;i<jArray.length();i++){
JSONObject json_data = jArray.getJSONObject(i);
Log.i("log_tag","id_kepadatan: "+json_data.getInt("id_kepadatan")+
", username: "+json_data.getString("username")+
", nama_jalan: "+json_data.getString("nama_jalan")+
", status: "+json_data.getString("status")+
", tanggal: "+json_data.getString("tanggal")+
", waktu: "+json_data.getString("waktu")+
", keterangan: "+json_data.getString("keterangan")
);
if(result.equals(null)){
//Get an output to the screen
returnString2 += "Data tidak ada";
}
else{
returnString2 += "\n" + json_data.getString("nama_jalan") + " mengalami "+ json_data.getString("status")+ " pada "+ json_data.getString("tanggal")+ " waktu "+ json_data.getString("waktu")+ " karena "+ json_data.getString("keterangan");
}
}
}
catch(JSONException e){
Log.e("log_tag", "Error parsing data "+e.toString());
}
try{
br2.setText(returnString2);
}
catch(Exception e){
Log.e("log_tag","Error in Display!" + e.toString());;
}
}
catch (Exception e) {
Log.e("log_tag","Error in http connection!!" + e.toString());
}
break;
case R.id.back:
a = new Intent(this, Menu.class);
startActivity(a);
break;
}
}
}
这是我的search.xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ffffff"
>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="10dip"
>
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#372c24"
android:text="PENCARIAN BERITA TERBARU"/>
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#372c24"
android:text="Masukkan Nama Jalan"/>
<Spinner
android:id="@+id/namjalSearch"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dip"
android:layout_marginBottom="20dip"
android:singleLine="true"/>
<Button android:id="@+id/find"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="250dip"
android:text="Find"
android:onClick="clickHandler"/>
<TextView
android:id="@+id/berita2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#372c24"
/>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:id="@+id/textBack"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="25dip"
android:layout_marginTop="130dip"
android:layout_marginLeft="190dip"
android:textColor="#372c24"
android:text="BACK"/>
<ImageButton
android:id="@+id/back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="125dip"
android:layout_marginLeft="258dip"
android:src="@drawable/back"
android:background="@null"
android:onClick="clickHandler"/>
<Button android:id="@+id/cariPeta"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="125dip"
android:text="Cari Peta"
android:onClick="clickHandler"/>
</RelativeLayout>
</LinearLayout>
</RelativeLayout>
</ScrollView>
我的目标是当我单击“ cariPeta”按钮时，它将显示从选择的街道开始的地图
例如，如果微调器指向街道的一个名称（例如：“ A.Yani”街道）...然后，当我单击“ cariPeta”按钮时，它将在Google中显示“ A.Yani”街道的地图。地图
我的问题是，我不知道我应该写什么代码。...你能告诉我吗？我会非常感激，因为这个项目对我来说非常重要
谢谢.....
最佳答案
好吧，我来指导你。
您需要编写按钮的点击事件。
单击该按钮时，微调框的getSelectedIndex（在微调框obj中有一个现成的方法）。
收到索引值后，从字符串数组中获取文本。
然后地图将出现在图片中。但是要处理地图，您需要一对经/纬度。
使用纬度/经度，您可以在地图上显示任何点。