Control and double finger zoom, single refers to drag the picture application programming source code, a good reference.

.classpath
.project
AndroidManifest.xml
assets
bin
...\classes.dex
...\resources.ap_
...\whu
...\...\iss
...\...\...\activity
...\...\...\........\ImageZoomView.class
...\...\...\........\main$1.class
...\...\...\........\main$2.class
...\...\...\........\main$3.class
...\...\...\........\main$4.class
...\...\...\........\main.class
...\...\...\........\R$attr.class
...\...\...\........\R$drawable.class
...\...\...\........\R$id.class
...\...\...\........\R$layout.class
...\...\...\........\R$string.class
...\...\...\........\R.class
...\...\...\........\SimpleZoomListener$ControlType.class
...\...\...\........\SimpleZoomListener.class
...\...\...\........\ZoomState.class
...\ZoomPage.apk
default.properties
gen
...\whu
...\...\iss
...\...\...\activity
...\...\...\........\R.java
proguard.cfg
res
...\drawable-hdpi
...\.............\earth.png
...\drawable-ldpi
...\.............\earth.png
...\drawable-mdpi
...\.............\earth.png
...\drawable-xhdpi
...\..............\earth.png
...\layout
...\......\activity_image.xml
...\values
...\......\strings.xml
src
...\whu
...\...\iss
...\...\...\activity
...\...\...\........\ImageZoomView.java
...\...\...\........\main.java
...\...\...\........\SimpleZoomListener.java
...\...\...\........\ZoomState.java

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