First Android App: Simple SpeedHud (Hilfe)

1import java.util.List;
2
3import android.app.Activity;
4import android.content.Context;
5import android.content.Intent;
6import android.location.Criteria;
7import android.location.Location;
8import android.location.LocationListener;
9import android.location.LocationManager;
10import android.location.LocationProvider;
11import android.os.Bundle;
12import android.os.PowerManager;
13import android.provider.Settings;
14import android.util.Log;
15import android.view.Menu;
16import android.view.View;
17import android.widget.TextView;
18
19public class MainActivity extends Activity {
20
21 private static final String TAG = MainActivity.class.getSimpleName();
22 private TextView speed;
23 private LocationManager manager;
24 private LocationListener listener;
25 protected PowerManager.WakeLock mWakeLock;
26
27 @Override
28 public void onCreate(Bundle savedInstanceState) {
29 super.onCreate(savedInstanceState);
30 setContentView(R.layout.activity_main);
31
32 final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
33 this.mWakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK, "My Tag");
34 this.mWakeLock.acquire();
35
36 speed = (TextView) findViewById(R.id.textView1);
37
38 manager = (LocationManager) getSystemService(LOCATION_SERVICE);
39
40 List<String> providers = manager.getAllProviders();
41 for (String name : providers) {
42 LocationProvider lp = manager.getProvider(name);
43 Log.d(TAG,
44 lp.getName() + " --- isProviderEnabled(): "
45 + manager.isProviderEnabled(name));
46 Log.d(TAG, "requiresCell(): " + lp.requiresCell());
47 Log.d(TAG, "requiresNetwork(): " + lp.requiresNetwork());
48 Log.d(TAG, "requiresSatellite(): " + lp.requiresSatellite());
49
50 }
51 Criteria criteria = new Criteria();
52 criteria.setAccuracy(Criteria.ACCURACY_FINE);
53 criteria.setPowerRequirement(Criteria.POWER_HIGH);
54 String name = manager.getBestProvider(criteria, true);
55 Log.d(TAG, name);
56 listener = new LocationListener() {
57
58 public void onLocationChanged(Location location) {
59 // TODO Auto-generated method stub
60 Log.d(TAG, "onLocationChanged()");
61 if (location != null) {
62 speed.setText(String.format("%2.0f",
63 (location.getSpeed() * 3.6)));
64 if (location.getSpeed() <= 0) {
65 speed.setText("000");
66 }
67 }
68 }
69
70 public void onProviderDisabled(String provider) {
71 // TODO Auto-generated method stub
72 Log.d(TAG, "onProviderDisabled()");
73 if (LocationManager.GPS_PROVIDER != null) {
74 speed.setText("GPS OFF");
75 speed.setTextSize(100);
76 }
77 }
78
79 public void onProviderEnabled(String provider) {
80 // TODO Auto-generated method stub
81 Log.d(TAG, "onProviderEnabled()");
82 }
83
84 public void onStatusChanged(String provider, int status,
85 Bundle extras) {
86 // TODO Auto-generated method stub
87 Log.d(TAG, "onStatusChanged()");
88 }
89
90 };
91
92 }
93
94 @Override
95 public boolean onCreateOptionsMenu(Menu menu) {
96 getMenuInflater().inflate(R.menu.activity_main, menu);
97 return true;
98 }
99
100 @Override
101 protected void onStart() {
102 super.onStart();
103 Log.d(TAG, "onStart()");
104 manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0,
105 listener);
106 }
107
108 @Override
109 protected void onPause() {
110 super.onPause();
111 Log.d(TAG, "onPause()");
112 manager.removeUpdates(listener);
113 }
114
115 public void hud(View view) {
116 Intent intent = new Intent(this, HudActivity.class);
117 startActivity(intent);
118 }
119
120 public void gps(View view) {
121 Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
122 startActivity(intent);
123 }
124
125 @Override
126 protected void onDestroy() {
127 // TODO Auto-generated method stub
128 this.mWakeLock.release();
129 super.onDestroy();
130 }
131}

1import java.util.List;
2
3import android.location.Criteria;
4import android.location.Location;
5import android.location.LocationListener;
6import android.location.LocationManager;
7import android.location.LocationProvider;
8import android.os.Bundle;
9import android.os.PowerManager;
10import android.app.Activity;
11import android.content.Context;
12import android.content.Intent;
13import android.util.Log;
14import android.view.Menu;
15import android.view.View;
16import android.widget.TextView;
17
18public class HudActivity extends Activity {
19
20 private static final String TAG = MainActivity.class.getSimpleName();
21 private TextView hudSpeed;
22 private LocationManager manager;
23 private LocationListener listener;
24 protected PowerManager.WakeLock mWakeLock;
25
26 @Override
27 public void onCreate(Bundle savedInstanceState) {
28 super.onCreate(savedInstanceState);
29 setContentView(R.layout.activity_hud);
30
31 final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
32 this.mWakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK, "My Tag");
33 this.mWakeLock.acquire();
34
35 hudSpeed = (TextView) findViewById(R.id.textView1);
36
37 manager = (LocationManager) getSystemService(LOCATION_SERVICE);
38
39 List<String> providers = manager.getAllProviders();
40 for (String name : providers) {
41 LocationProvider lp = manager.getProvider(name);
42 Log.d(TAG,
43 lp.getName() + " --- isProviderEnabled(): "
44 + manager.isProviderEnabled(name));
45 Log.d(TAG, "requiresCell(): " + lp.requiresCell());
46 Log.d(TAG, "requiresNetwork(): " + lp.requiresNetwork());
47 Log.d(TAG, "requiresSatellite(): " + lp.requiresSatellite());
48
49 }
50 Criteria criteria = new Criteria();
51 criteria.setAccuracy(Criteria.ACCURACY_FINE);
52 criteria.setPowerRequirement(Criteria.POWER_HIGH);
53 String name = manager.getBestProvider(criteria, true);
54 Log.d(TAG, name);
55 listener = new LocationListener() {
56
57 public void onLocationChanged(Location location) {
58 // TODO Auto-generated method stub
59 Log.d(TAG, "onLocationChanged()");
60 if (location != null) {
61 hudSpeed.setText(String.format("%2.0f",
62 (location.getSpeed() * 3.6)));
63 if (location.getSpeed() <= 0) {
64 hudSpeed.setText("000");
65 }
66 }
67 }
68
69 public void onProviderDisabled(String provider) {
70 // TODO Auto-generated method stub
71 Log.d(TAG, "onProviderDisabled()");
72 if (LocationManager.GPS_PROVIDER != null) {
73 hudSpeed.setText("---");
74 }
75 }
76
77 public void onProviderEnabled(String provider) {
78 // TODO Auto-generated method stub
79 Log.d(TAG, "onProviderEnabled()");
80 }
81
82 public void onStatusChanged(String provider, int status,
83 Bundle extras) {
84 // TODO Auto-generated method stub
85 Log.d(TAG, "onStatusChanged()");
86 }
87
88 };
89 }
90
91 @Override
92 public boolean onCreateOptionsMenu(Menu menu) {
93 getMenuInflater().inflate(R.menu.activity_hud, menu);
94 return true;
95 }
96
97 @Override
98 protected void onStart() {
99 super.onStart();
100 Log.d(TAG, "onStart()");
101 manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0,
102 listener);
103 }
104
105 @Override
106 protected void onPause() {
107 super.onPause();
108 Log.d(TAG, "onPause()");
109 manager.removeUpdates(listener);
110 }
111
112 public void back(View view) {
113 Intent intent = new Intent(this, MainActivity.class);
114 startActivity(intent);
115 }
116
117 @Override
118 protected void onDestroy() {
119 // TODO Auto-generated method stub
120 this.mWakeLock.release();
121 super.onDestroy();
122 }
123}