Android Open Source - links Expandable Height Grid View

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License

The source code is released under:

MIT License

Java Source Code

package org.iiitb.se.links.custom;
//from  w w w  .  j a v a 2s  . co m
import android.content.Context;
import android.util.AttributeSet;
import android.view.ViewGroup;
import android.widget.GridView;

public class ExpandableHeightGridView extends GridView {
  boolean expanded = false;

  public ExpandableHeightGridView(Context context) {
    super(context);
  }

  public ExpandableHeightGridView(Context context, AttributeSet attrs) {
    super(context, attrs);
  }

  public ExpandableHeightGridView(Context context, AttributeSet attrs,
      int defStyle) {
    super(context, attrs, defStyle);
  }

  public boolean isExpanded() {
    return expanded;
  }

  @Override
  public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    // HACK! TAKE THAT ANDROID!
    if (isExpanded()) {
      // Calculate entire height by providing a very large height hint.
      // View.MEASURED_SIZE_MASK represents the largest height possible.
      int expandSpec = MeasureSpec.makeMeasureSpec(MEASURED_SIZE_MASK,
          MeasureSpec.AT_MOST);
      super.onMeasure(widthMeasureSpec, expandSpec);

      ViewGroup.LayoutParams params = getLayoutParams();
      params.height = getMeasuredHeight();
    } else {
      super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
  }

  public void setExpanded(boolean expanded) {
    this.expanded = expanded;
  }
}

Java Source Code List

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