Android 自定义imageview实现图片缩放实例详解

觉得这个自定义的imageview很好用 性能不错 所以拿出来分享给大家 因为不会做gif图 所以项目效果 就不好贴出来了 把代码贴出来

1.项目结构图

2.Compat.class

package com.suo.image; import android.os.Build.VERSION; import android.os.Build.VERSION_CODES; import android.view.View; public class Compat { private static final int SIXTY_FPS_INTERVAL = 1000 / 60; public static void postOnAnimation(View view, Runnable runnable) { if (VERSION.SDK_INT >= VERSION_CODES.JELLY_BEAN) { SDK16.postOnAnimation(view, runnable); } else { view.postDelayed(runnable, SIXTY_FPS_INTERVAL); } } }

3.HackyViewPager.class

package com.suo.image; import android.content.Context; import android.support.v4.view.ViewPager; import android.util.AttributeSet; import android.view.MotionEvent; /** * Hacky fix for Issue #4 and * http://code.google.com/p/android/issues/detail?id=18990 * * ScaleGestureDetector seems to mess up the touch events, which means that * ViewGroups which make use of onInterceptTouchEvent throw a lot of * IllegalArgumentException: pointerIndex out of range. * * There's not much I can do in my code for now, but we can mask the result by * just catching the problem and ignoring it. * * @author Chris Banes */ public class HackyViewPager extends ViewPager { public HackyViewPager(Context context) { super(context); } public HackyViewPager(Context context, AttributeSet attrs) { super(context, attrs); // TODO Auto-generated constructor stub } @Override public boolean onInterceptTouchEvent(MotionEvent ev) { try { return super.onInterceptTouchEvent(ev); } catch (IllegalArgumentException e) { e.printStackTrace(); return false; } } }

4.IScaleView.class

/******************************************************************************* * Copyright 2011, 2012 Chris Banes. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://.suo.image.ScaleView android:layout_width="match_parent" android:layout_height="match_parent" android:src="@drawable/a"/> </RelativeLayout>

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