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私はJavaとAndroidにはいくらか新しく、クラスやアクティビティに問題があります。コードを整理してMainActivityから別のクラスに移動しましたが、クラスの代わりに新しいアクティビティを作成するだけでアプリを稼働させることができました。私がメインビューに滞在し、ちょうど主な活動のボタンから アクティビティをクラスに変更する - Android
- 、カウントダウンした後、LocationActivityを呼び出します。
- LocationActivityはGPS座標を見つけて、それらをSendActivityに送信します。
これは、私がちょうどlocationListenerを起動する必要があったので、これを動作させる唯一の方法です。したがって、onCreateセクションで開始しました。
MainActivity.java
public class MainActivity extends Activity {
Button mCloseButton;
Button mOpenButton;
MultiDirectionSlidingDrawer mDrawer;
private Button send_button;
Button sendButton;
EditText msgTextField;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main);
send_button = (Button)findViewById(R.id.button2);
mDrawer.open();
mCloseButton.setOnClickListener(new OnClickListener() {
public void onClick(View v)
{
mDrawer.animateClose();
}
});
mOpenButton.setOnClickListener(new OnClickListener() {
public void onClick(View v)
{
if(!mDrawer.isOpened())
mDrawer.animateOpen();
}
});
final SharedPreferences shared = getSharedPreferences("PEOPLE_PREFERENCES", MODE_PRIVATE);
final String first = shared.getString("FIRSTNAME", "");
final String last = shared.getString("LASTNAME", "0");
///////Profile Button////////////////
Button profile = (Button) findViewById(R.id.button1);
profile.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
startActivity(new Intent(MainActivity.this, PreferencesActivity.class));
}
});
///////////////////////////////////
//////Generate ID//////////////////
if (usr_id == null) {
char[] chars = "abcdefghijklmnopqrstuvwxyzABSDEFGHIJKLMNOPQRSTUVWXYZ1234567890".toCharArray();
Random r = new Random(System.currentTimeMillis());
char[] id = new char[8];
for (int i = 0; i < 8; i++) {
id[i] = chars[r.nextInt(chars.length)];
}
usr_id = new String(id);
Editor editor = shared.edit();
editor.putString("USR_ID", usr_id);
editor.commit();
}
//////////////////////////////////
////////Send Alert////////////////
///////Begin Timer///////////////
send_button.setOnClickListener(new OnClickListener() {
private boolean running = false;
private CountDownTimer timer;
public void onClick(View v) {
if(!running)
{
running = true;
timer = new CountDownTimer(4000, 1000) {
@Override
public void onFinish() {
send_button.setText("SENT");
startActivity(new Intent(MainActivity.this, LocationActivity.class));
SendUserActivity.sendId(usr_id1, first, last);
}
@Override
public void onTick(long sec) {
send_button.setText("CANCEL (" + sec/1000 + ")");
}
}.start();
}
else
{
timer.cancel();
send_button.setText("Send!");
running = false;
}
}
});
}
///////////////////////////////////
@Override
public void onContentChanged()
{
super.onContentChanged();
mCloseButton = (Button) findViewById(R.id.button_open);
mOpenButton = (Button) findViewById(R.id.button_open);
mDrawer = (MultiDirectionSlidingDrawer) findViewById(R.id.drawer);
}
}
LocationActivity.java
package com.alex.www;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
import android.widget.Button;
public class LocationActivity extends Activity {
private LocationManager locManager;
private LocationListener locListener;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
startLocation();
}
void startLocation()
{
SharedPreferences shared = getSharedPreferences("PEOPLE_PREFERENCES", MODE_PRIVATE);
final String usr_id2 = shared.getString("USR_ID", "none");
//get a reference to the LocationManager
locManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
//checked to receive updates from the position
locListener = new LocationListener() {
public void onLocationChanged(Location location) {
SendActivity.send(location, usr_id2);
}
public void onProviderDisabled(String provider){
//labelState.setText("Provider OFF");
}
public void onProviderEnabled(String provider){
//labelState.setText("Provider ON ");
}
public void onStatusChanged(String provider, int status, Bundle extras){
Log.i("", "Provider Status: " + status);
}
};
locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locListener);
}
}
SendActivity.java
package com.alex.www;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import android.app.Activity;
import android.content.SharedPreferences;
import android.location.Location;
import android.os.Bundle;
import android.util.Log;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class SendActivity extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
public static void send(Location loc, String usr_id2)
{
Log.i("", String.valueOf(loc.getLatitude() + " - " + String.valueOf(loc.getLongitude())));
String lat = String.valueOf(loc.getLatitude());
String lon = String.valueOf(loc.getLongitude());
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://example.com/test/example.php");
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("lat", lat));
nameValuePairs.add(new BasicNameValuePair("lon", lon));
nameValuePairs.add(new BasicNameValuePair("id", usr_id2));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
httpclient.execute(httppost);
}
catch (ClientProtocolException e) {
// TODO Auto-generated catch block
}
catch (IOException e) {
// TODO Auto-generated catch block
}
}
}
すべての点を尊重して、Androidを同時に学習する負担なしにJavaを学びましょう。私はあなたがそのアドバイスを感謝しないだろうと確信していますが、Javaをしっかり理解すれば、それがあなたにとって最良の行動コースであると理解できます。 – mah