2013.12.04 （7）——— android SlidingMenu之CustomAnimation

2013.12.04 （7）——— android SlidingMenu之CustomAnimation

这个有3个例子，主要是介绍侧边栏显示时候的动画

public class CustomScaleAnimation extends CustomAnimation {

	public CustomScaleAnimation() {
		super(R.string.anim_scale, new CanvasTransformer() {
			@Override
			public void transformCanvas(Canvas canvas, float percentOpen) {
				canvas.scale(percentOpen, 1, 0, 0);
			}			
		});
	}

}

package com.jeremyfeinstein.slidingmenu.example.anim;

import android.graphics.Canvas;
import android.view.animation.Interpolator;

import com.jeremyfeinstein.slidingmenu.example.R;
import com.jeremyfeinstein.slidingmenu.example.R.string;
import com.jeremyfeinstein.slidingmenu.lib.SlidingMenu.CanvasTransformer;

public class CustomSlideAnimation extends CustomAnimation {
	
	private static Interpolator interp = new Interpolator() {
		@Override
		public float getInterpolation(float t) {
			t -= 1.0f;
			return t * t * t + 1.0f;
		}		
	};

	public CustomSlideAnimation() {
		// see the class CustomAnimation for how to attach 
		// the CanvasTransformer to the SlidingMenu
		super(R.string.anim_slide, new CanvasTransformer() {
			@Override
			public void transformCanvas(Canvas canvas, float percentOpen) {
				System.out.println(canvas.getHeight()*(1-interp.getInterpolation(percentOpen)));
				canvas.translate(0, canvas.getHeight()*(1-interp.getInterpolation(percentOpen)));
			}			
		});
	}

}

package com.jeremyfeinstein.slidingmenu.example.anim;

import android.graphics.Canvas;

import com.jeremyfeinstein.slidingmenu.example.R;
import com.jeremyfeinstein.slidingmenu.example.R.string;
import com.jeremyfeinstein.slidingmenu.lib.SlidingMenu.CanvasTransformer;

public class CustomZoomAnimation extends CustomAnimation {

	public CustomZoomAnimation() {
		// see the class CustomAnimation for how to attach 
		// the CanvasTransformer to the SlidingMenu
		super(R.string.anim_zoom, new CanvasTransformer() {
			@Override
			public void transformCanvas(Canvas canvas, float percentOpen) {
				float scale = (float) (percentOpen*0.25 + 0.75);
				canvas.scale(scale, scale, canvas.getWidth()/2, canvas.getHeight()/2);
			}
		});
	}

}

通过调用

sm.setBehindCanvasTransformer(mTransformer);

就可以显示自定义的动画了