In this blog we are selecting multiple images.Here I have created the custom view components and activity used to get the selected images.
1. Custom ViewComponet
< RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent">
< ImageView android:id="@+id/thumbImage" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:layout_centerInParent="true" />
< CheckBox android:id="@+id/itemCheckBox" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:layout_alignParentRight="true"
android:layout_alignParentTop="true" />
< /RelativeLayout>
2. SampleActivity
1. Create a ImageAdapter
public class ImageAdapter extends BaseAdapter {
}
2. Inflate the View
mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = mInflater.inflate(R.layout.mygallert, null);
3. find the required View
imageview = (ImageView) convertView.findViewById(R.id.thumbImage);
checkbox = (CheckBox) convertView.findViewById(R.id.itemCheckBox);
4. Control the image selection
imageview.setBackgroundResource(R.drawable.icon);
checkbox.setId(position);
checkbox.setChecked(false);
checkbox.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
CheckBox cb = (CheckBox) v;
if (cb.isChecked()) {
cb.setChecked(true);
selectedImage.add(v.getId());
} else {
cb.setChecked(false);
selectedImage.remove(v.getId());
}
}
});
4. Track the image selection
selectedImage.add(v.getId());
selectedImage.remove(v.getId());
5. displays the selected Image Position
Toast.makeText(SampleActivity.this,"" + SampleActivity.this.selectedImage, 10).show();
Sample
public class SampleActivity extends Activity {
private ImageAdapter imageAdapter;
private Set selectedImage = new HashSet();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
GridView imagegrid = (GridView) findViewById(R.id.PhoneImageGrid);
Button selectedImage = (Button) findViewById(R.id.selectBtn);
imageAdapter = new ImageAdapter();
imagegrid.setAdapter(imageAdapter);
selectedImage.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Toast.makeText(SampleActivity.this,
"" + SampleActivity.this.selectedImage, 10).show();
}
});
}
public class ImageAdapter extends BaseAdapter {
private LayoutInflater mInflater;
public ImageAdapter() {
mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageview;
CheckBox checkbox;
convertView = mInflater.inflate(R.layout.mygallert, null);
imageview = (ImageView) convertView.findViewById(R.id.thumbImage);
checkbox = (CheckBox) convertView.findViewById(R.id.itemCheckBox);
imageview.setBackgroundResource(R.drawable.icon);
checkbox.setId(position);
checkbox.setChecked(false);
checkbox.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
CheckBox cb = (CheckBox) v;
if (cb.isChecked()) {
cb.setChecked(true);
selectedImage.add(v.getId());
} else {
cb.setChecked(false);
selectedImage.remove(v.getId());
}
}
});
return convertView;
}
public int getCount() {
return 5;
}
}
}
Required XML
main.xml
< ?xml version="1.0" encoding="utf-8"?>
< RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent">
< Button android:id="@+id/selectBtn" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:text="Select"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" android:minWidth="200px" />
< GridView android:id="@+id/PhoneImageGrid"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:numColumns="auto_fit" android:verticalSpacing="10dp"
android:horizontalSpacing="10dp" android:columnWidth="90dp"
android:stretchMode="columnWidth" android:gravity="center"
android:layout_above="@id/selectBtn" />
< /RelativeLayout>
mygallery.xml
< ?xml version="1.0" encoding="utf-8"?>
< RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent">
< ImageView android:id="@+id/thumbImage" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:layout_centerInParent="true" />
< CheckBox android:id="@+id/itemCheckBox" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:layout_alignParentRight="true"
android:layout_alignParentTop="true" />
< /RelativeLayout>
