1 /*
2  * Copyright (C) 2007 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.example.android.apis.view;
18 
19 //Need the following import to get access to the app resources, since this
20 //class is in a sub-package.
21 import com.example.android.apis.R;
22 
23 import android.app.Activity;
24 import android.os.Bundle;
25 import android.view.Menu;
26 import android.view.Gravity;
27 import android.view.MenuItem;
28 import android.widget.LinearLayout;
29 
30 
31 /**
32  * Demonstrates horizontal and vertical gravity
33  */
34 public class LinearLayout8 extends Activity {
35 
36     private LinearLayout mLinearLayout;
37 
38     // Menu item Ids
39     public static final int VERTICAL_ID = Menu.FIRST;
40     public static final int HORIZONTAL_ID = Menu.FIRST + 1;
41 
42     public static final int TOP_ID = Menu.FIRST + 2;
43     public static final int MIDDLE_ID = Menu.FIRST + 3;
44     public static final int BOTTOM_ID = Menu.FIRST + 4;
45 
46     public static final int LEFT_ID = Menu.FIRST + 5;
47     public static final int CENTER_ID = Menu.FIRST + 6;
48     public static final int RIGHT_ID = Menu.FIRST + 7;
49 
50     @Override
onCreate(Bundle savedInstanceState)51     protected void onCreate(Bundle savedInstanceState) {
52         super.onCreate(savedInstanceState);
53         setContentView(R.layout.linear_layout_8);
54         mLinearLayout = (LinearLayout)findViewById(R.id.layout);
55     }
56 
57     @Override
onCreateOptionsMenu(Menu menu)58     public boolean onCreateOptionsMenu(Menu menu) {
59         super.onCreateOptionsMenu(menu);
60         menu.add(0, VERTICAL_ID, 0, R.string.linear_layout_8_vertical);
61         menu.add(0, HORIZONTAL_ID, 0, R.string.linear_layout_8_horizontal);
62         menu.add(0, TOP_ID, 0, R.string.linear_layout_8_top);
63         menu.add(0, MIDDLE_ID, 0, R.string.linear_layout_8_middle);
64         menu.add(0, BOTTOM_ID, 0, R.string.linear_layout_8_bottom);
65         menu.add(0, LEFT_ID, 0, R.string.linear_layout_8_left);
66         menu.add(0, CENTER_ID, 0, R.string.linear_layout_8_center);
67         menu.add(0, RIGHT_ID, 0, R.string.linear_layout_8_right);
68 
69         return true;
70     }
71 
72     @Override
onOptionsItemSelected(MenuItem item)73     public boolean onOptionsItemSelected(MenuItem item) {
74         switch (item.getItemId()) {
75 
76         case VERTICAL_ID:
77             mLinearLayout.setOrientation(LinearLayout.VERTICAL);
78             return true;
79         case HORIZONTAL_ID:
80             mLinearLayout.setOrientation(LinearLayout.HORIZONTAL);
81             return true;
82 
83         case TOP_ID:
84             mLinearLayout.setVerticalGravity(Gravity.TOP);
85             return true;
86         case MIDDLE_ID:
87             mLinearLayout.setVerticalGravity(Gravity.CENTER_VERTICAL);
88             return true;
89         case BOTTOM_ID:
90             mLinearLayout.setVerticalGravity(Gravity.BOTTOM);
91             return true;
92 
93         case LEFT_ID:
94             mLinearLayout.setHorizontalGravity(Gravity.LEFT);
95             return true;
96         case CENTER_ID:
97             mLinearLayout.setHorizontalGravity(Gravity.CENTER_HORIZONTAL);
98             return true;
99         case RIGHT_ID:
100             mLinearLayout.setHorizontalGravity(Gravity.RIGHT);
101             return true;
102 
103         }
104         return super.onOptionsItemSelected(item);
105     }
106 }
107