Bei mehreren Activities nur eine zurück über Hardwaretaste Return

1@Override
2 public void onClick(View v) {
3 finish();
4 }

1public class MainActivity extends Activity implements OnClickListener{
2
3 private ImageButton nextBtn1;
4 private ImageButton nextBtn2;
5 private ImageButton nextBtn3;
6
7 @Override
8 protected void onCreate(Bundle savedInstanceState) {
9 super.onCreate(savedInstanceState);
10 setContentView(R.layout.activity_main);
11
12 nextBtn1 = (ImageButton) findViewById(R.id.buttontheorie);
13 nextBtn1.setOnClickListener(this);
14
15 nextBtn2 = (ImageButton) findViewById(R.id.buttonteacher);
16 nextBtn2.setOnClickListener(this);
17
18 nextBtn3 = (ImageButton) findViewById(R.id.buttonmap);
19 nextBtn3.setOnClickListener(this);
20 }
21
22
23 @Override
24 public void onClick(View v)
25 {
26
27 Intent intent = new Intent();
28
29 switch (v.getId())
30 {
31
32 case R.id.buttontheorie:
33 intent.setClass(MainActivity.this, theorie.class);
34 startActivity(intent);
35 break;
36
37 case R.id.buttonteacher:
38 intent.setClass(MainActivity.this, teacher.class);
39 startActivity(intent);
40 break;
41
42 case R.id.buttonmap:
43 intent.setClass(MainActivity.this, map.class);
44 startActivity(intent);
45 break;
46 }
47
48 }

1public class map extends Activity implements OnClickListener {
2
3 private ImageButton buro;
4 private ImageButton rothenbach;
5 private ImageButton johannis;
6 private ImageButton sudstadt;
7 private ImageButton gartenstadt;
8
9
10 @Override
11 protected void onCreate(Bundle savedInstanceState) {
12 super.onCreate(savedInstanceState);
13 setContentView(R.layout.map);
14
15 final Activity teacherActivity = this;
16 teacherActivity.setTitle(R.string.titelmap);
17
18 buro = (ImageButton) findViewById(R.id.buttonbuero);
19 buro.setOnClickListener(this);
20
21 rothenbach= (ImageButton) findViewById(R.id.buttonroethenbach);
22 rothenbach.setOnClickListener(this);
23
24 johannis = (ImageButton) findViewById(R.id.buttonjohannis);
25 johannis.setOnClickListener(this);
26
27 sudstadt = (ImageButton) findViewById(R.id.buttonsudstadt);
28 sudstadt.setOnClickListener(this);
29
30 gartenstadt = (ImageButton) findViewById(R.id.buttongartenstadt);
31 gartenstadt.setOnClickListener(this);
32
33
34 }
35
36 @Override
37 public void onClick(View v)
38 {
39
40 Intent intent = new Intent();
41
42 switch (v.getId())
43 {
44
45 case R.id.buttonbuero:
46 intent.setClass(map.this, filialebuero.class);
47 startActivity(intent);
48 break;
49
50 case R.id.buttonroethenbach:
51 intent.setClass(map.this, filialeroethenbach.class);
52 startActivity(intent);
53 break;
54
55 case R.id.buttonjohannis:
56 intent.setClass(map.this, filialeschniegling.class);
57 startActivity(intent);
58 break;
59
60 case R.id.buttonsudstadt:
61 intent.setClass(map.this, filialesudstadt.class);
62 startActivity(intent);
63 break;
64
65 case R.id.buttongartenstadt:
66 intent.setClass(map.this, filialegartenstadt.class);
67 startActivity(intent);
68 break;
69
70
71 }
72
73 finish();
74 }
75
76}

1public class filialeschniegling extends map implements OnClickListener {
2
3 final Context context = this;
4 private Button phonebtn;
5
6 @Override
7 protected void onCreate(Bundle savedInstanceState) {
8 super.onCreate(savedInstanceState);
9 setContentView(R.layout.filialejohannis);
10
11 phonebtn = (Button) findViewById(R.id.callfilialeburo);
12
13 PhoneCallListener phoneCallListener = new PhoneCallListener();
14 TelephonyManager telManager = (TelephonyManager) this.getSystemService(Context.TELEPHONY_SERVICE);
15 telManager.listen(phoneCallListener, PhoneStateListener.LISTEN_CALL_STATE);
16
17 phonebtn.setOnClickListener(new OnClickListener() {
18
19 @Override
20 public void onClick(View view) {
21
22 Intent phoneCallIntent = new Intent(Intent.ACTION_CALL);
23 phoneCallIntent.setData(Uri.parse("tel:123456789"));
24 startActivity(phoneCallIntent);
25
26 }
27 });
28
29
30 }
31
32 @Override
33 public void onClick(View v) {
34 finish();
35 }
36
37 private class PhoneCallListener extends PhoneStateListener {
38
39 String TAG = "LOGGING PHONE CALL";
40 private boolean phoneCalling = false;
41
42 @Override
43 public void onCallStateChanged(int state, String incomingNumber) {
44
45 if (TelephonyManager.CALL_STATE_RINGING == state) {
46
47 Log.i(TAG, "RINGING, number: " + incomingNumber);
48 }
49
50 if (TelephonyManager.CALL_STATE_OFFHOOK == state) {
51
52 Log.i(TAG, "OFFHOOK");
53
54 phoneCalling = true;
55 }
56
57 if (TelephonyManager.CALL_STATE_IDLE == state) {
58 Log.i(TAG, "IDLE");
59 if (phoneCalling) {
60 Log.i(TAG, "restart app");
61
62 Intent i = getBaseContext().getPackageManager()
63 .getLaunchIntentForPackage(
64 getBaseContext().getPackageName());
65
66 i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
67 startActivity(i);
68
69 phoneCalling = false;
70 }
71 }
72 }
73 }
74
75}