android 图片叠加效果

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. */@Overridepublic 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。

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