libgdx学习记录7—

libgdx学习记录7——Ui

libgdx中的UI设计主要通过其对应的Style类进行实现，也可以通过skin实现。如果没有编辑好的skin文件，可以创建一个默认的skin，再添加已经设计好的style类即可，然后在需要使用的地方直接调用skin会更加方便。
本文主要简单介绍Label和TextButton这两种比较常见的UI组件，代码如下。
  1 package com.fxb.newtest;
  2 
  3 import com.badlogic.gdx.ApplicationListener;
  4 import com.badlogic.gdx.Gdx;
  5 import com.badlogic.gdx.graphics.Color;
  6 import com.badlogic.gdx.graphics.GL10;
  7 import com.badlogic.gdx.graphics.Pixmap;
  8 import com.badlogic.gdx.graphics.Pixmap.Format;
  9 import com.badlogic.gdx.graphics.Texture;
 10 import com.badlogic.gdx.graphics.g2d.BitmapFont;
 11 import com.badlogic.gdx.graphics.g2d.TextureRegion;
 12 import com.badlogic.gdx.scenes.scene2d.Stage;
 13 import com.badlogic.gdx.scenes.scene2d.ui.Button;
 14 import com.badlogic.gdx.scenes.scene2d.ui.Button.ButtonStyle;
 15 import com.badlogic.gdx.scenes.scene2d.ui.Label;
 16 import com.badlogic.gdx.scenes.scene2d.ui.Label.LabelStyle;
 17 import com.badlogic.gdx.scenes.scene2d.ui.Skin;
 18 import com.badlogic.gdx.scenes.scene2d.ui.TextButton;
 19 import com.badlogic.gdx.scenes.scene2d.ui.TextButton.TextButtonStyle;
 20 import com.badlogic.gdx.scenes.scene2d.utils.Align;
 21 import com.badlogic.gdx.scenes.scene2d.utils.Drawable;
 22 import com.badlogic.gdx.scenes.scene2d.utils.TextureRegionDrawable;
 23 
 24 public class Lib002_Ui implements ApplicationListener{
 25 
 26     Stage stage;
 27     LabelStyle labelStyle;
 28     Label label, label2;
 29     BitmapFont font;
 30     ButtonStyle buttonStyle;
 31     TextButtonStyle textbuttonStyle;
 32     Button button;
 33     TextButton textbutton, textbutton2;
 34         
 35     Skin skin;
 36         
 37     @Override
 38     public void create() {
 39         // TODO Auto-generated method stub
 40         
 41         stage = new Stage();
 42         skin = new Skin();
 43         
 44         Pixmap pixmap = new Pixmap( 1, 1, Format.RGBA8888 );
 45         pixmap.setColor( Color.DARK_GRAY );
 46         pixmap.fill();
 47         Texture texture = new Texture( pixmap );
 48         Drawable draw1 = new TextureRegionDrawable( new TextureRegion( texture ) );
 49         
 50         pixmap.setColor( Color.GRAY );
 51         pixmap.fill();
 52         texture = new Texture( pixmap );
 53         Drawable draw2 = new TextureRegionDrawable( new TextureRegion( texture ) );
 54         
 55         font = new BitmapFont();
 56         labelStyle = new LabelStyle( font, Color.GREEN );
 57         labelStyle.background = draw1;
 58         
 59         label = new Label( "Very Good!", labelStyle );
 60         label.setAlignment( Align.right );
 61         //label.setSize( 100, 50 );
 62         label.setBounds( 10, 0, 100, 50 );
 63         
 64         skin.add( "gray", texture, Texture.class );
 65         skin.add( "gray", labelStyle, LabelStyle.class );
 66         
 67         label2 = new Label( "Label2", skin, "gray" );
 68         label2.setSize( 100, 50 );
 69         label2.setPosition( 120, 0 );
 70         
 71         buttonStyle = new ButtonStyle( draw1, draw2, null );
 72         textbuttonStyle = new TextButtonStyle( draw1, draw2, null, font );
 73         textbuttonStyle.fontColor = Color.CYAN;
 74         
 75         textbutton = new TextButton( "TextButton", textbuttonStyle );
 76         textbutton.setBounds( 0, 100, 100, 50 );
 77         
 78         skin.add( "gray", textbuttonStyle, TextButtonStyle.class );
 79         textbutton2 = new TextButton( "TextButton2", skin, "gray" );
 80         textbutton2.setBounds( 150, 100, 100, 50 );
 81                 
 82         stage.addActor( label );
 83         stage.addActor( label2 );
 84         stage.addActor( textbutton );
 85         stage.addActor( textbutton2 );
 86         Gdx.input.setInputProcessor( stage );
 87     }
 88 
 89     @Override
 90     public void resize(int width, int height) {
 91         // TODO Auto-generated method stub
 92         
 93     }
 94 
 95     @Override
 96     public void render() {
 97         // TODO Auto-generated method stub    
 98         Gdx.gl.glClearColor( 1, 1, 1, 1 );
 99         Gdx.gl.glClear( GL10.GL_COLOR_BUFFER_BIT );
100         
101         stage.act();
102         stage.draw();        
103     }
104 
105     @Override
106     public void pause() {
107         // TODO Auto-generated method stub
108         
109     }
110 
111     @Override
112     public void resume() {
113         // TODO Auto-generated method stub
114         
115     }
116 
117     @Override
118     public void dispose() {
119         // TODO Auto-generated method stub
120         stage.dispose();
121         skin.dispose();
122     }
123 
124 }
运行效果：