Android animation 示例-优快云博客

本文详细介绍了如何在应用中添加并管理多种动画效果，包括alpha、rotate、translate和scale动画，以及如何根据位置参数启动相应的动画序列。

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private void addAnimation(String name) {
		array.add(name);
		if (name.equals("alpha")) {
			anim = new AlphaAnimation(0f, 1.0f);
			anim.setDuration(time);
			anim.setFillAfter(true);
			anims.add(anim);

			anim = new AlphaAnimation(1f, 0f);
			anim.setDuration(time);
			anim.setFillAfter(false);
			exit_anims.add(anim);

		} else if (name.equals("rotate")) {
			anim = new RotateAnimation(0.0f, 360.0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
			anim.setDuration(time);
			anim.setFillAfter(true);
			anims.add(anim);

			anim = new RotateAnimation(0.0f, -360.0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
			anim.setDuration(time);
			anim.setFillAfter(false);
			exit_anims.add(anim);
		} else if (name.equals("translate")) {
			anim = new TranslateAnimation(width, 0f, 0, 0);
			anim.setDuration(time);
			anim.setFillAfter(true);
			anims.add(anim);

			anim = new TranslateAnimation(0, -width, 0, 0);
			anim.setDuration(time);
			anim.setFillAfter(false);
			exit_anims.add(anim);
		} else if (name.equals("scale")) {
			anim = new ScaleAnimation(0.0f, 1.0f, 1f, 1f, Animation.RELATIVE_TO_PARENT, 0.5f,
					Animation.RELATIVE_TO_PARENT, 0.5f);
			anim.setDuration(time);
			anim.setFillAfter(true);
			anim.setStartOffset(200);
			anims.add(anim);

			anim = new ScaleAnimation(1.0f, 0.0f, 1f, 1f, Animation.RELATIVE_TO_PARENT, 0.5f,
					Animation.RELATIVE_TO_PARENT, 0.5f);
			anim.setDuration(time);
			anim.setFillAfter(false);
			anim.setStartOffset(200);
			exit_anims.add(anim);
		} else {
			myView1.setBackgroundResource(R.drawable.widget_animate);
			frameAnimation = (AnimationDrawable) myView1.getBackground();
		}
	}

	private void startAnimation(int pos) {
		position = pos;

		if (position >= 4) {
			myView1.setVisibility(View.VISIBLE);
			frameAnimation.start();
		} else {
			myView.setVisibility(View.VISIBLE);
			myView.startAnimation(anims.get(pos));
		}
	}