本文实例讲述了android编程之图片颜色处理方法。分享给大家供大家参考，具体如下：
你想做到跟美图秀秀一样可以处理自己的照片，美化自己的照片吗？其实你也可以自己做一个这样的软件，废话不多说了，直接上图，上代码了！
效果图如下：
没处理前：
处理之后：
mainactivity.java的代码如下：
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package net.loonggg.test;
import android.app.activity;
import android.graphics.bitmap;
import android.graphics.bitmapfactory;
import android.graphics.canvas;
import android.graphics.color;
import android.graphics.colormatrix;
import android.graphics.colormatrixcolorfilter;
import android.graphics.matrix;
import android.graphics.paint;
import android.os.bundle;
import android.widget.imageview;
import android.widget.seekbar;
import android.widget.seekbar.onseekbarchangelistener;
public class mainactivity extends activity {
private seekbar sb1, sb2, sb3, sb4, sb5;
private imageview iv;
private bitmap bitmap, updatebitmap;
private canvas canvas;
private paint paint;
@override
protected void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.activity_main);
iv = (imageview) findviewbyid(r.id.iv);
sb1 = (seekbar) findviewbyid(r.id.sb1);
sb2 = (seekbar) findviewbyid(r.id.sb2);
sb3 = (seekbar) findviewbyid(r.id.sb3);
sb4 = (seekbar) findviewbyid(r.id.sb4);
sb5 = (seekbar) findviewbyid(r.id.sb5);
bitmap = bitmapfactory.decoderesource(getresources(), r.drawable.b);
updatebitmap = bitmap.createbitmap(bitmap.getwidth(),
bitmap.getheight(), bitmap.getconfig());
canvas = new canvas(updatebitmap);
paint = new paint();
final colormatrix cm = new colormatrix();
paint.setcolorfilter(new colormatrixcolorfilter(cm));
paint.setcolor(color.black);
paint.setantialias(true);
final matrix matrix = new matrix();
canvas.drawbitmap(bitmap, matrix, paint);
iv.setimagebitmap(updatebitmap);
/**
* rgb三原色 红色值的设置
*/
sb1.setonseekbarchangelistener(new onseekbarchangelistener() {
@override
public void onstoptrackingtouch(seekbar seekbar) {
int progress = seekbar.getprogress();
cm.set(new float[] { progress / 128f, 0, 0, 0, 0,// 红色值
0, 1, 0, 0, 0,// 绿色值
0, 0, 1, 0, 0,// 蓝色值
0, 0, 0, 1, 0 // 透明度
});
paint.setcolorfilter(new colormatrixcolorfilter(cm));
canvas.drawbitmap(bitmap, matrix, paint);
iv.setimagebitmap(updatebitmap);
}
@override
public void onstarttrackingtouch(seekbar seekbar) {
}
@override
public void onprogresschanged(seekbar seekbar, int progress,
boolean fromuser) {
}
});
/**
* rgb三原色 绿色值的设置
*/
sb2.setonseekbarchangelistener(new onseekbarchangelistener() {
@override
public void onstoptrackingtouch(seekbar seekbar) {
int progress = seekbar.getprogress();
cm.set(new float[] { 1, 0, 0, 0, 0,// 红色值
0, progress / 128f, 0, 0, 0,// 绿色值
0, 0, 1, 0, 0,// 蓝色值
0, 0, 0, 1, 0 // 透明度
});
paint.setcolorfilter(new colormatrixcolorfilter(cm));
canvas.drawbitmap(bitmap, matrix, paint);
iv.setimagebitmap(updatebitmap);
}
@override
public void onstarttrackingtouch(seekbar seekbar) {
}
@override
public void onprogresschanged(seekbar seekbar, int progress,
boolean fromuser) {
}
});
/**
* rgb三原色 蓝色值的设置
*/
sb3.setonseekbarchangelistener(new onseekbarchangelistener() {
@override
public void onstoptrackingtouch(seekbar seekbar) {
int progress = seekbar.getprogress();
cm.set(new float[] { 1, 0, 0, 0, 0,// 红色值
0, 1, 0, 0, 0,// 绿色值
0, 0, progress / 128f, 0, 0,// 蓝色值
0, 0, 0, 1, 0 // 透明度
});
paint.setcolorfilter(new colormatrixcolorfilter(cm));
canvas.drawbitmap(bitmap, matrix, paint);
iv.setimagebitmap(updatebitmap);
}
@override
public void onstarttrackingtouch(seekbar seekbar) {
}
@override
public void onprogresschanged(seekbar seekbar, int progress,
boolean fromuser) {
}
});
/**
* rgb三原色 三个值都改变为设置饱和度（亮度）
*/
sb4.setonseekbarchangelistener(new onseekbarchangelistener() {
@override
public void onstoptrackingtouch(seekbar seekbar) {
int progress = seekbar.getprogress();
cm.set(new float[] { progress / 128f, 0, 0, 0, 0,// 红色值
0, progress / 128f, 0, 0, 0,// 绿色值
0, 0, progress / 128f, 0, 0,// 蓝色值
0, 0, 0, 1, 0 // 透明度
});
paint.setcolorfilter(new colormatrixcolorfilter(cm));
canvas.drawbitmap(bitmap, matrix, paint);
iv.setimagebitmap(updatebitmap);
}
@override
public void onstarttrackingtouch(seekbar seekbar) {
}
@override
public void onprogresschanged(seekbar seekbar, int progress,
boolean fromuser) {
}
});
/**
* rgb三原色 设置透明度
*/
sb5.setonseekbarchangelistener(new onseekbarchangelistener() {
@override
public void onstoptrackingtouch(seekbar seekbar) {
int progress = seekbar.getprogress();
cm.set(new float[] { 1, 0, 0, 0, 0,// 红色值
0, 1, 0, 0, 0,// 绿色值
0, 0, 1, 0, 0,// 蓝色值
0, 0, 0, progress / 128f, 0 // 透明度
});
paint.setcolorfilter(new colormatrixcolorfilter(cm));
canvas.drawbitmap(bitmap, matrix, paint);
iv.setimagebitmap(updatebitmap);
}
@override
public void onstarttrackingtouch(seekbar seekbar) {
}
@override
public void onprogresschanged(seekbar seekbar, int progress,
boolean fromuser) {
}
});
}
}
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布局文件代码如下：
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<linearlayout xmlns: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:background="#cdcdcd"
android:orientation="vertical"
tools:context=".mainactivity" >
<imageview
android:id="@+id/iv"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<linearlayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal"
android:padding="10dp" >
<textview
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="红色:"
android:textcolor="#ff0000"
android:textsize="24sp" />
<seekbar
android:id="@+id/sb1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="256"
android:progress="128" />
</linearlayout>
<linearlayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal"
android:padding="10dp" >
<textview
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="绿色:"
android:textcolor="#00ff00"
android:textsize="24sp" />
<seekbar
android:id="@+id/sb2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="256"
android:progress="128" />
</linearlayout>
<linearlayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal"
android:padding="10dp" >
<textview
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="蓝色:"
android:textcolor="#0000ff"
android:textsize="24sp" />
<seekbar
android:id="@+id/sb3"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="256"
android:progress="128" />
</linearlayout>
<linearlayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal"
android:padding="10dp" >
<textview
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="饱和度:"
android:textcolor="#000000"
android:textsize="16.5sp" />
<seekbar
android:id="@+id/sb4"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="256"
android:progress="128" />
</linearlayout>
<linearlayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal"
android:padding="10dp" >
<textview
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="透明度:"
android:textcolor="#000000"
android:textsize="16.5sp" />
<seekbar
android:id="@+id/sb5"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="256"
android:progress="128" />
</linearlayout>
</linearlayout>
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到这里就完了，看明白了吗？
希望本文所述对大家android程序设计有所帮助。