[Problem] ImageView.setImageResource verändert Text Gravity der Buttons

1public class MainActivity extends Activity implements OnClickListener{
2
3 ImageView imageView1;
4
5 Button button_1;
6 Button button_2;
7 Button button_3;
8 Button button_4;
9
10 @Override
11 public void onCreate(Bundle savedInstanceState) {
12 super.onCreate(savedInstanceState);
13 setContentView(R.layout.activity_main);
14
15 imageView1 = (ImageView)findViewById(R.id.imageView_1);
16
17 button_1 = (Button)findViewById(R.id.button_1);
18 button_2 = (Button)findViewById(R.id.button_2);
19 button_3 = (Button)findViewById(R.id.button_3);
20 button_4 = (Button)findViewById(R.id.button_4);
21
22 button_1.setOnClickListener(this);
23 button_2.setOnClickListener(this);
24 button_3.setOnClickListener(this);
25 button_4.setOnClickListener(this);
26
27 }
28
29 public void onClick(View v) {
30 new ImageChange().execute(v);
31 }
32
33 class ImageChange extends AsyncTask<View, Void, String> {
34
35 @Override
36 protected String doInBackground(View... v) {
37 switch (v[0].getId()){
38 case R.id.button_1:
39 return "SAP";
40 case R.id.button_2:
41 return "SAP";
42 case R.id.button_3:
43 return "Google";
44 case R.id.button_4:
45 return "Google";
46 default:
47 return null;
48 }
49 }
50
51 @Override
52 protected void onPostExecute(String result) {
53 if (result == "SAP")
54 imageView1.setImageResource(R.drawable.sap);
55 if (result == "Google")
56 imageView1.setImageResource(R.drawable.google_logo);
57
58
59 super.onPostExecute(result);
60 }
61 }
62}

1<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
2 xmlns:tools="http://schemas.android.com/tools"
3 xmlns:app="http://schemas.android.com/apk/res/com.example.testapp"
4 android:id="@+id/RelativeLayout_Main"
5 android:layout_width="match_parent"
6 android:layout_height="match_parent"
7 android:gravity="top"
8 android:orientation="vertical" >
9
10 <TableLayout
11 android:id="@+id/TableLayout1"
12 android:layout_width="match_parent"
13 android:layout_height="wrap_content"
14 android:layout_alignParentBottom="true"
15 android:layout_centerHorizontal="true"
16 android:orientation="horizontal" >
17
18 <TableRow
19 android:id="@+id/tableRow1"
20 android:layout_width="wrap_content"
21 android:layout_height="wrap_content" >
22
23
24 <Button
25 android:id="@+id/button_1"
26 android:layout_width="wrap_content"
27 android:layout_weight="0.5"
28 android:gravity="center_vertical|center_horizontal"
29 android:text="@string/button_1" />
30
31 <Button
32 android:id="@+id/button_2"
33 android:layout_width="wrap_content"
34 android:layout_weight="0.5"
35 android:text="@string/button_2" />
36 </TableRow>
37
38 <TableRow
39 android:id="@+id/tableRow2"
40 android:layout_width="wrap_content"
41 android:layout_height="wrap_content" >
42
43 <Button
44 android:id="@+id/button_3"
45 android:layout_weight="0.5"
46 android:text="@string/button_3" />
47
48 <Button
49 android:id="@+id/button_4"
50 android:layout_weight="0.5"
51 android:text="@string/button_4" />
52 </TableRow>
53 </TableLayout>
54
55 <RelativeLayout
56 android:layout_width="match_parent"
57 android:layout_height="match_parent"
58 android:layout_above="@+id/TableLayout1"
59 android:layout_alignParentLeft="true"
60 android:layout_alignParentRight="true"
61 android:layout_alignParentTop="true"
62 android:background="#000000" >
63
64 <ImageView
65 android:id="@+id/imageView_1"
66 android:layout_width="match_parent"
67 android:layout_height="match_parent"
68 android:contentDescription="@string/imageView_description"
69 android:padding="10dp"
70 android:src="@drawable/sap" />
71 </RelativeLayout>
72
73</RelativeLayout>

1<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
2 xmlns:tools="http://schemas.android.com/tools"
3 xmlns:app="http://schemas.android.com/apk/res/com.example.testapp"
4 android:id="@+id/LinearLayout1"
5 android:layout_width="fill_parent"
6 android:layout_height="fill_parent"
7 android:orientation="vertical" >
8
9
10 <TableLayout
11 android:id="@+id/TableLayout1"
12 android:layout_width="match_parent"
13 android:layout_height="100dip"
14 android:layout_gravity="top"
15 android:orientation="horizontal" >
16
17 <TableRow
18 android:id="@+id/tableRow1"
19 android:layout_width="wrap_content"
20 android:layout_height="wrap_content" >
21
22 <Button
23 android:id="@+id/button_1"
24 android:layout_column="0"
25 android:layout_weight="0.5"
26 android:gravity="center_vertical|center_horizontal"
27 android:text="@string/button_1" />
28
29 <Button
30 android:id="@+id/button_2"
31 android:layout_column="1"
32 android:layout_weight="0.5"
33 android:gravity="center_vertical|center_horizontal"
34 android:text="@string/button_2" />
35 </TableRow>
36
37 <TableRow
38 android:id="@+id/tableRow2"
39 android:layout_width="wrap_content"
40 android:layout_height="wrap_content" >
41
42 <Button
43 android:id="@+id/button_3"
44 android:layout_weight="0.5"
45 android:gravity="center_vertical|center_horizontal"
46 android:text="@string/button_3" />
47
48 <Button
49 android:id="@+id/button_4"
50 android:layout_weight="0.5"
51 android:gravity="center_vertical|center_horizontal"
52 android:text="@string/button_4" />
53 </TableRow>
54 </TableLayout>
55
56 <RelativeLayout
57 android:id="@+id/relativLayoutMain"
58 android:layout_width="match_parent"
59 android:layout_height="fill_parent"
60 android:layout_below="@id/TableLayout1" >
61
62 <ImageView
63 android:id="@+id/imageView_1"
64 android:layout_width="match_parent"
65 android:layout_height="match_parent"
66 android:contentDescription="@string/imageView_description"
67 android:padding="10dp"
68 android:src="@drawable/sap" />
69 </RelativeLayout>
70
71</LinearLayout>