android 图片叠加效果

最新推荐文章于 2024-06-07 22:08:44 发布

tangweiye

最新推荐文章于 2024-06-07 22:08:44 发布

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分类专栏： android学习文章标签：移动开发

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本文探讨了如何使用Android编程实现两张图片叠加效果，并详细解释了setLayerInset()方法的作用及应用实例，旨在解决图片间重叠问题，提升用户体验。

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要实现两张图片叠加效果通过查找资料发现可以用setLayerInset() 实现

package com.twy.test;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.os.Bundle;
import android.view.ViewGroup.MarginLayoutParams;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;

public class testDemo extends Activity {
	private LinearLayout lay;

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		
		lay = (LinearLayout) findViewById(R.id.linearLayout1);

		firstLay();
	
	}

	private void firstLay() {
		Bitmap mbitmap_c = BitmapFactory.decodeResource(getResources(),
				R.drawable.cc);
		Bitmap mbitmap_b = BitmapFactory.decodeResource(getResources(),
				R.drawable.bb);
		Bitmap mbitmap_e = BitmapFactory.decodeResource(getResources(),
				R.drawable.ee);
		Bitmap mbitmap_f = BitmapFactory.decodeResource(getResources(),
				R.drawable.ff);
		
		Drawable[] array = new Drawable[4];
		array[0] = new BitmapDrawable(mbitmap_b);
		array[1] = new BitmapDrawable(mbitmap_c);
		array[2] = new BitmapDrawable(mbitmap_e);
		array[3] = new BitmapDrawable(mbitmap_f);
		
		LayerDrawable la = new LayerDrawable(array);
		la.setLayerInset(0, 0, 0, 0, 0);
		la.setLayerInset(1, 80, 0, 0, 0);
		la.setLayerInset(2, 160, 0, 0, 0);
		la.setLayerInset(3, 240, 0, 0, 0);
		
		ImageView img = new ImageView(this);
		img.setImageDrawable(la);
		
		lay.addView(img);
		
	}
}

本来想实现图片间两两有一部分重叠但这种实现效果是一张图片覆盖在另一张上。