Android example source code file (LinearLayout8.java)

This example Android source code file (LinearLayout8.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, app, application, bottom_id, center_id, horizontal_id, left_id, linearlayout, linearlayout8, middle_id, os, override, right_id, top_id, ui, vertical_id, view

The LinearLayout8.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 com.example.android.apis.view;

//Need the following import to get access to the app resources, since this
//class is in a sub-package.
import com.example.android.apis.R;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.Gravity;
import android.view.MenuItem;
import android.widget.LinearLayout;


/**
 * Demonstrates horizontal and vertical gravity
 */
public class LinearLayout8 extends Activity {

    private LinearLayout mLinearLayout;

    // Menu item Ids
    public static final int VERTICAL_ID = Menu.FIRST;
    public static final int HORIZONTAL_ID = Menu.FIRST + 1;

    public static final int TOP_ID = Menu.FIRST + 2;
    public static final int MIDDLE_ID = Menu.FIRST + 3;
    public static final int BOTTOM_ID = Menu.FIRST + 4;

    public static final int LEFT_ID = Menu.FIRST + 5;
    public static final int CENTER_ID = Menu.FIRST + 6;
    public static final int RIGHT_ID = Menu.FIRST + 7;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.linear_layout_8);
        mLinearLayout = (LinearLayout)findViewById(R.id.layout);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        menu.add(0, VERTICAL_ID, 0, R.string.linear_layout_8_vertical);
        menu.add(0, HORIZONTAL_ID, 0, R.string.linear_layout_8_horizontal);
        menu.add(0, TOP_ID, 0, R.string.linear_layout_8_top);
        menu.add(0, MIDDLE_ID, 0, R.string.linear_layout_8_middle);
        menu.add(0, BOTTOM_ID, 0, R.string.linear_layout_8_bottom);
        menu.add(0, LEFT_ID, 0, R.string.linear_layout_8_left);
        menu.add(0, CENTER_ID, 0, R.string.linear_layout_8_center);
        menu.add(0, RIGHT_ID, 0, R.string.linear_layout_8_right);

        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {

        case VERTICAL_ID:
            mLinearLayout.setOrientation(LinearLayout.VERTICAL);
            return true;
        case HORIZONTAL_ID:
            mLinearLayout.setOrientation(LinearLayout.HORIZONTAL);
            return true;

        case TOP_ID:
            mLinearLayout.setVerticalGravity(Gravity.TOP);
            return true;
        case MIDDLE_ID:
            mLinearLayout.setVerticalGravity(Gravity.CENTER_VERTICAL);
            return true;
        case BOTTOM_ID:
            mLinearLayout.setVerticalGravity(Gravity.BOTTOM);
            return true;

        case LEFT_ID:
            mLinearLayout.setHorizontalGravity(Gravity.LEFT);
            return true;
        case CENTER_ID:
            mLinearLayout.setHorizontalGravity(Gravity.CENTER_HORIZONTAL);
            return true;
        case RIGHT_ID:
            mLinearLayout.setHorizontalGravity(Gravity.RIGHT);
            return true;

        }
        return super.onOptionsItemSelected(item);
    }
}