Drawable示例

        继上 ,完善几个Drawable示例.

 

• 状态背景(selector)

  • <?xml version="1.0" encoding="utf-8"?> 
    <selector xmlns:android="http://schemas.android.com/apk/res/android"> 
        <item 
        	android:state_focused="true" 
        	android:state_pressed="true" 
        	android:color="@android:color/black" /> 
        <item 
        	android:state_focused="true" 
        	android:state_pressed="false" 
        	android:color="@android:color/black" />    	
    	<item 
        	android:state_focused="false" 
        	android:state_pressed="true" 
        	android:color="@android:color/black" /> 
        <item 
        	android:color="@android:color/white" /> 
    </selector> 

     
• 拉伸(重复)背景(bitmap)
  
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  • <?xml version="1.0" encoding="utf-8"?>
        <bitmap xmlns:android="http://schemas.android.com/apk/res/android"
            android:src="@drawable/bg_toolbar"
            android:tileMode="repeat" />

     
• 椭圆背景(shape)
• 渐变背景
  • 

  • <shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    
                        <corners android:bottomRightRadius="10dip" 
                            android:bottomLeftRadius="0.1dip" 
                            android:topLeftRadius="10dip" 
                            android:topRightRadius="0.1dip" />
      					<gradient
    					  android:startColor="#356bc2"
    					  android:endColor="#a0c7ff"
    					  android:angle="270" />
     
     
     
     </shape> 

     
• NinePatchDrawable
  • Step1: 制作原始图片素材
  • Step2: 在原始的图片外层加一象素黑色边框
  • Step3: 擦除四周角落的那一黑色象素(就是让那一象素透明)
  • Step4: 用draw9patch来确定要延伸重复的部分和需要固定显示的部分
  • Step5: 设定需要需要渲染的主体
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• 关于setColorFilter
  
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  • Drawable highLightImg = getResources().getDrawable(R.drawable.ic_menu_formore24x24);
        highLightImg.setColorFilter(0xff4fbcef, Mode.MULTIPLY);