kape123 kape123 - 5 months ago 30
Android Question

Android - LinearLayout Horizontal with wrapping children

Is there a property to set for Android's LinearLayout that will enable it to properly wrap child controls?

Meaning - I have changeable number of children and would like to lay out them horizontally like:


Example: Control1, Control2, Control3, ...


I do that by setting:


ll.setOrientation(LinearLayout.HORIZONTAL);
foreach (Child c in children)
ll.addView(c);


However, if I have large number of children, last one gets cuts off, instead of going to next line.

Any idea how this can be fixed?

Answer

For anyone who needs this kind of behaviour:

private void populateLinks(LinearLayout ll, ArrayList<Sample> collection, String header) {

    Display display = getWindowManager().getDefaultDisplay();
    int maxWidth = display.getWidth() - 10;

    if (collection.size() > 0) {
        LinearLayout llAlso = new LinearLayout(this);
        llAlso.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
                LayoutParams.WRAP_CONTENT));
        llAlso.setOrientation(LinearLayout.HORIZONTAL);

        TextView txtSample = new TextView(this);
        txtSample.setText(header);

        llAlso.addView(txtSample);
        txtSample.measure(0, 0);

        int widthSoFar = txtSample.getMeasuredWidth();
        for (Sample samItem : collection) {
            TextView txtSamItem = new TextView(this, null,
                    android.R.attr.textColorLink);
            txtSamItem.setText(samItem.Sample);
            txtSamItem.setPadding(10, 0, 0, 0);
            txtSamItem.setTag(samItem);
            txtSamItem.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    TextView self = (TextView) v;
                    Sample ds = (Sample) self.getTag();

                    Intent myIntent = new Intent();
                    myIntent.putExtra("link_info", ds.Sample);
                    setResult("link_clicked", myIntent);
                    finish();
                }
            });

            txtSamItem.measure(0, 0);
            widthSoFar += txtSamItem.getMeasuredWidth();

            if (widthSoFar >= maxWidth) {
                ll.addView(llAlso);

                llAlso = new LinearLayout(this);
                llAlso.setLayoutParams(new LayoutParams(
                        LayoutParams.FILL_PARENT,
                        LayoutParams.WRAP_CONTENT));
                llAlso.setOrientation(LinearLayout.HORIZONTAL);

                llAlso.addView(txtSamItem);
                widthSoFar = txtSamItem.getMeasuredWidth();
            } else {
                llAlso.addView(txtSamItem);
            }
        }

        ll.addView(llAlso);
    }
}