控件：photoView单点/多点触摸来进行图片缩放

GitHub - chrisbanes/PhotoView: Implementation of ImageView for Android that supports zooming, by various touch gestures. https://github.com/chrisbanes/PhotoView

添加依赖

 repositories {
        maven { url "https://jitpack.io" }
    }

我的是compile 'com.android.support:appcompat-v7:26.+'但PhotoView自身包含的appcompat-v7与我的版本不一致。

compile ('com.github.chrisbanes:PhotoView:2.1.4'){
        exclude group: 'com.android.support', module: 'appcompat-v7'
    }

xml布局

activity

 PhotoViewAttacher mAttacher = new PhotoViewAttacher(photoView);
        mAttacher.setMaximumScale((float)6.0);