[Android] Select a local image (open the media library and select an image)

In this survey, I want to achieve the following: Click the Pictures button to obtain all the pictures in the mobile phone, select an image, and display it in the imageview.

Application Scope: select an image when uploading an image, similar to "browsing ".

Effect:

All images are listed, including directories.

In Activity
Action contains a "action_get_content" String constant, which allows users to select data of a specific type and return the URI of the data. we can use this constant and set the type to "image/*" to obtain all images in the Android mobile phone.

 

 

Main. xml:

<? XML version = "1.0" encoding = "UTF-8"?> <Br/> <linearlayout xmlns: Android = "http://schemas.android.com/apk/res/android" <br/> Android: Orientation = "vertical" <br/> Android: layout_width = "fill_parent" <br/> Android: layout_height = "fill_parent" <br/> <textview <br/> Android: layout_width = "fill_parent" <br/> Android: layout_height = "wrap_content" <br/> Android: TEXT = "@ string/Hello" <br/> <button <br/> Android: id = "@ + ID/B01" <br/> Android: layout_width = "fill_parent" <br/> Android: layout_height = "wrap_content" <br/> <imageview <br/> Android: Id = "@ + ID/iv01" <br/> Android: layout_width = "fill_parent" <br/> Android: layout_height = "wrap_content" <br/> </linearlayout> <br/> 

 

Lesson_01_pic.java:

 

Package COM. yfz; <br/> Import Java. io. filenotfoundexception; <br/> Import android. app. activity; <br/> Import android. content. contentresolver; <br/> Import android. content. intent; <br/> Import android. graphics. bitmap; <br/> Import android. graphics. bitmapfactory; <br/> Import android.net. uri; <br/> Import android. OS. bundle; <br/> Import android. util. log; <br/> Import android. view. view; <br/> Import android. widget. button; <br/> Import android. widget. imageview; <br/> public class lesson_01_pic extends activity {<br/>/** called when the activity is first created. */<br/> @ override <br/> Public void oncreate (bundle savedinstancestate) {<br/> super. oncreate (savedinstancestate); <br/> setcontentview (R. layout. main); </P> <p> button = (button) findviewbyid (R. id. b01); <br/> button. settext ("select image"); <br/> button. setonclicklistener (New button. onclicklistener () {<br/> @ override <br/> Public void onclick (view v) {<br/> intent = new intent (); <br/>/* enable pictures image type to set to image */<br/> intent. settype ("image/*"); <br/>/* use intent. action_get_content: Action */<br/> intent. setaction (intent. action_get_content); <br/>/* returns the current image after obtaining the photo */<br/> startactivityforresult (intent, 1 ); <br/>}</P> <p >}); <br/>}</P> <p> @ override <br/> protected void onactivityresult (INT requestcode, int resultcode, intent data) {<br/> If (resultcode = result_ OK) {<br/> URI uri = data. getdata (); <br/> log. E ("Uri", Uri. tostring (); <br/> contentresolver Cr = This. getcontentresolver (); <br/> try {<br/> Bitmap bitmap = bitmapfactory. decodestream (Cr. openinputstream (URI); <br/> imageview = (imageview) findviewbyid (R. id. iv01); <br/>/* Set bitmap to imageview */<br/> imageview. setimagebitmap (Bitmap); <br/>} catch (filenotfoundexception e) {<br/> log. E ("exception", E. getmessage (), e); <br/>}< br/> super. onactivityresult (requestcode, resultcode, data); <br/>}< br/>} 

 

Okay, that's all.