Android--open local image and show path

Background

Code

First on the layout file:

<LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"android:orientation= "vertical"Tools:context=". Mainactivity " >    <ButtonAndroid:id= "@+id/button"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"android:layout_gravity= "Center"Android:text= "@string/hello_world"/>    <ImageViewAndroid:id= "@+id/pic"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"android:layout_gravity= "Center"android:contentdescription= "@string/app_name"/></LinearLayout>

There is no textview here, I finally output the path in System.out.println mode.

Initialization

button =(Button) Findviewbyid (R.id.button); Pic=(ImageView) Findviewbyid (r.id.pic); Button.setonclicklistener (NewView.onclicklistener () {@Override Public voidOnClick (View v) {//TODO Auto-generated method stubsSystem.out.println ("OnClick"); Intent Intent=NewIntent (); Intent.settype ("Image/*");                Intent.setaction (intent.action_get_content); Startactivityforresult (Intent,1); }        });

To overwrite the callback function for Startactivityforresult:

@Overrideprotected voidOnactivityresult (intRequestcode,intResultCode, Intent data) {        //TODO Auto-generated method stubsSystem.out.println (requestcode+ ""); if(requestcode==1)        {            //get the URI of the pictureUri uri =Data.getdata (); //the data provided by the external program Access ContentProvider can be accessed via the Contentresolver interfaceContentresolver CR = This. Getcontentresolver ();            Bitmap Bitmap; //Bitmap BM; //This is a way to read pictures             Try             {                //BM = MediaStore.Images.Media.getBitmap (CR, URI); //Pic.setimagebitmap (BM);Bitmap =Bitmapfactory.decodestream (Cr.openinputstream (URI));                Pic.setimagebitmap (bitmap); System.out.println ("Good");

  //the first way to read a path   // string[] proj = {                MediaStore.Images.Media.DATA};  //seems to be an Android Multimedia database encapsulation interface, specific look at the android document cursor cursor =                 Managedquery (URI, proj, NULL, NULL, NULL);              According to my own understanding, this is the index value of the image that gets the user's choice int column_index = Cursor.getcolumnindexorthrow (MediaStore.Images.Media.DATA);                Move the cursor to the beginning, this is very important, careless can easily cause the crossing cursor.movetofirst ();                Finally get the picture path according to the index value String path = cursor.getstring (Column_index);                   SYSTEM.OUT.PRINTLN (path);  */ 

 //second way to read path cursor cursor                = This. Getcontentresolver (). Query (URI,NULL,NULL,NULL,NULL); intColumn_index =Cursor.getcolumnindexorthrow (MediaStore.Images.Media.DATA);                Cursor.movetofirst (); String Path=cursor.getstring (Column_index);                            SYSTEM.OUT.PRINTLN (path); }             Catch(Exception e) {//TODO Auto-generated catch blockE.printstacktrace (); System.out.println ("Bad"); }                    }        Super. Onactivityresult (Requestcode, ResultCode, data); }

The last path is the path.

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Source code: HTTP://PAN.BAIDU.COM/S/1DD1QX01

Openpic.zip

Reprint Please specify source: http://www.cnblogs.com/yydcdut/p/3720594.html