Android Image changes

For the time being do not need to study the detailed how to implement the process, directly using the existing methods can be, the code is as follows

package com.yuanlp.testimage;import android.graphics.bitmap;import  Android.graphics.bitmapfactory;import android.graphics.canvas;import android.graphics.color;import  android.graphics.Matrix;import android.graphics.Paint;import android.os.Bundle;import  android.support.v7.app.appcompatactivity;import android.view.view;import android.widget.imageview; Public class mainactivity extends appcompatactivity {    private  ImageView iv;     @Override     protected void  OnCreate (bundle savedinstancestate)  {        super.oncreate ( Savedinstancestate);         setcontentview (R.layout.activity_main);         iv =  (ImageView)  findviewbyid (R.ID.IV);     }    public Void turnbig (View view) {        bitmap bitmap =  bitmapfactory.decoderesource (Getresources (),  R.DRAWABLE.MEINV);         matrix matrix=new matrix ();         Matrix.setscale (2,2);   //magnification four times times, horizontal twice times, vertical direction twice times         //buy a piece of paper         bitmap bitmap1 = bitmap.createbitmap ( Bitmap.getwidth ()  * 2, bitmap.getheight ()  * 2, bitmap.getconfig ());         //buy an artboard         canvas canvas  = new canvas (BITMAP1);         //Copy Session          paint paint = new paint ();         paint.setcolor (Color.Black);        canvas.drawbitmap (Bitmap,matrix,paint);         //Incoming new paper         iv.setimagebitmap (BITMAP1) ;     }    public void turnsmall (View view) {         bitmap bitmap = bitmapfactory.decoderesource (GetResources () ,  R.DRAWABLE.MEINV);         matrix matrix=new matrix ();         matrix.setscale (0.5f,0.5f);         //Buy a paper         Bitmap bitmap1 =  Bitmap.createbitmap (Bitmap.getwidth ()  / 2, bitmap.getheight ()  / 2,  Bitmap.getconfig ())         //buy an artboard          Canvas canvas=new Canvas (BITMAP1);         paint paint=new paint ();         paint.setcolor (Color.Black);         canvas.drawbitmap (bitmap,matrix,paint);         iv.setimagebitmap (bitmap1);     }}

This article is from the "Yuangushi" blog, make sure to keep this source http://cm0425.blog.51cto.com/10819451/1943888

Android Image changes