Apps change number of grids in gridview

[Thayar]

How to change the number of grids in the grid view when i change from portrait to landscape ?

 

[Thayar]

Any one please reply?

 

[steve]

For this you will need to use a onConfigurationChanged listener. Here is a simple usage:
[HIGH]
@Override
public void onConfigurationChanged(Configuration myConfig) {
super.onConfigurationChanged(myConfig);

int orientation = getResources().getConfiguration().orientation;

switch(orientation)
{
case Configuration.ORIENTATION_LANDSCAPE:
....your grid code here...
break;

case Configuration.ORIENTATION_PORTRAIT:
....your grid code here...
break;
}
}
[/HIGH]

Let me know if you need any more help.

 

[Thayar]

Thanks, I already tried this code.
But the no. of rows do not change when i change from portrait to landscape and from landscape to portrait.

 

[steve]

Thanks, I already tried this code.
But the no. of rows do not change when i change from portrait to landscape and from landscape to portrait.

Post your code so we can help. Also the manifest code for this activity.

 

[Thayar]

This is my MainActivity.java page

1. public class MainActivity extends Activity {
2. GridView gridView;
3. @Override
4. protected void onCreate(Bundle savedInstanceState) {
5. super.onCreate(savedInstanceState);
6. setContentView(R.layout.activity_main);
7. gridView=(GridView) findViewById(R.id.gridView1);
8. gridView.setAdapter(new adapclass());
10. }
11. public class adapclass extends BaseAdapter
12. {
13. @Override
14. public int getCount() {
15. // TODO Auto-generated method stub
16. return 6;
17. }
18. @Override
19. public Object getItem(int arg0) {
20. // TODO Auto-generated method stub
21. return null;
22. }
23. @Override
24. public long getItemId(int arg0) {
25. // TODO Auto-generated method stub
26. return 0;
27. }
28. @Override
29. public View getView(int arg0, View arg1, ViewGroup arg2) {
30. // TODO Auto-generated method stub
31. ViewHolder viewHolder;
32. if(arg1==null)
33. {
34. LayoutInflater inflater=(LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
35. arg1=inflater.inflate(R.layout.sample_image, null);
36. viewHolder=new ViewHolder();
37. viewHolder.imageView=(ImageView) arg1.findViewById(R.id.imageView1);
38. arg1.setTag(viewHolder);
39. }
40. else
41. {
42. viewHolder=(ViewHolder) arg1.getTag();
43. }
44. viewHolder.imageView.setImageResource(R.drawable.ic_launcher);
45. return arg1;
48. }
50. }
52. static class ViewHolder
53. {
54. ImageView imageView;
55. }
56. @Override
57. public boolean onCreateOptionsMenu(Menu menu) {
58. // Inflate the menu; this adds items to the action bar if it is present.
59. getMenuInflater().inflate(R.menu.main, menu);
60. return true;
61. }
63. @Override
64. public void onConfigurationChanged(Configuration newConfig) {
65. // TODO Auto-generated method stub
66. super.onConfigurationChanged(newConfig);
69. int orientation=getResources().getConfiguration().orientation;
70. switch (orientation) {
71. case Configuration.ORIENTATION_LANDSCAPE:
72. gridView.setNumColumns(4);
73. break;
74. case Configuration.ORIENTATION_PORTRAIT:
75. gridView.setNumColumns(3);
76. break;
77. default:
78. break;
79. }
81. }
83. }

Below is my androidmanifest file


<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.sample"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="8" />

<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.sample.MainActivity"
android:label="@string/app_name"
android:configChanges="orientation"
>
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

</manifest>


I don't know where I made a mistake?

Please check my code.