Android引用第三方类库的方法实例

package com.eassol.component; //Download by http://www.codefans.net import java.io.InputStream; import android.content.Context; import android.content.res.AssetManager; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.widget.LinearLayout; public class Component extends LinearLayout { private static String tag = "Base"; protected Context context; public Component(Context context, AttributeSet attrs) { super(context, attrs); this.context = context; init(); } public Component(Context context) { super(context); this.context = context; init(); } private void init() { try { //获取图片转换为Bitmap AssetManager localAssetManager = this.getResources().getAssets(); String str = "home_pressed.png"; InputStream localInputStream = localAssetManager.open(str); Bitmap localBitmap = BitmapFactory.decodeStream(localInputStream); localInputStream.close(); //把Bitmap图像转换为Drawable Drawable drawable = new BitmapDrawable(localBitmap); //设置背景 if(localBitmap != null){ setBackgroundDrawable(drawable); } } catch (Exception e) { e.printStackTrace(); } } }