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Android example source code file (HorizontalFocusSearch.java)

This example Android source code file (HorizontalFocusSearch.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

activity, android, button, content, horizontalfocussearch, linearlayout, mybutton, os, override, string, textview, ui, view, widget

The HorizontalFocusSearch.java Android example source code

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.widget.focus;

import android.app.Activity;
import android.widget.LinearLayout;
import android.widget.Button;
import android.widget.TextView;
import android.os.Bundle;
import android.view.ViewGroup;
import android.content.Context;

public class HorizontalFocusSearch extends Activity {

    private LinearLayout mLayout;

    private Button mLeftTall;
    private Button mMidShort1Top;
    private Button mMidShort2Bottom;
    private Button mRightTall;


    public LinearLayout getLayout() {
        return mLayout;
    }

    public Button getLeftTall() {
        return mLeftTall;
    }

    public Button getMidShort1Top() {
        return mMidShort1Top;
    }

    public Button getMidShort2Bottom() {
        return mMidShort2Bottom;
    }

    public Button getRightTall() {
        return mRightTall;
    }

    @Override
    protected void onCreate(Bundle icicle) {
        super.onCreate(icicle);

        mLayout = new LinearLayout(this);
        mLayout.setOrientation(LinearLayout.HORIZONTAL);
        mLayout.setLayoutParams(new ViewGroup.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.MATCH_PARENT));

        mLeftTall = makeTall("left tall");
        mLayout.addView(mLeftTall);

        mMidShort1Top = addShort(mLayout, "mid(1) top", false);
        mMidShort2Bottom = addShort(mLayout, "mid(2) bottom", true);

        mRightTall = makeTall("right tall");
        mLayout.addView(mRightTall);

        setContentView(mLayout);
    }

    // just to get toString non-sucky
    private static class MyButton extends Button {

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


        @Override
        public String toString() {
            return getText().toString();
        }
    }

    private Button makeTall(String label) {
        Button button = new MyButton(this);
        button.setText(label);
        button.setLayoutParams(new LinearLayout.LayoutParams(
                ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.MATCH_PARENT));
        return button;
    }

    private Button addShort(LinearLayout root, String label, boolean atBottom) {
        Button button = new MyButton(this);
        button.setText(label);
        button.setLayoutParams(new LinearLayout.LayoutParams(
                ViewGroup.LayoutParams.WRAP_CONTENT,
                0, // height
                490));

        TextView filler = new TextView(this);
        filler.setText("filler");
        filler.setLayoutParams(new LinearLayout.LayoutParams(
                ViewGroup.LayoutParams.WRAP_CONTENT,
                0, // height
                510));

        LinearLayout ll = new LinearLayout(this);
        ll.setOrientation(LinearLayout.VERTICAL);
        ll.setLayoutParams(new LinearLayout.LayoutParams(
            ViewGroup.LayoutParams.WRAP_CONTENT,
            ViewGroup.LayoutParams.MATCH_PARENT));

        if (atBottom) {
            ll.addView(filler);
            ll.addView(button);
            root.addView(ll);
        } else {
            ll.addView(button);
            ll.addView(filler);
            root.addView(ll);
        }
        return button;
    }
}

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