package net.hnjdzy.imagecolor;
import android.os.Bundle;
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.view.Menu;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
public class MainActivity extends Activity {
private ImageView iv;
private SeekBar sb1,sb2,sb3;
private Canvas canvas;
private Paint paint;
private ColorMatrix cm;
private Matrix matrix;
private Bitmap b1,b2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
iv = (ImageView) findViewById(R.id.imageView1);
sb1 = (SeekBar) findViewById(R.id.seekBar1);
sb2 = (SeekBar) findViewById(R.id.seekBar2);
sb3 = (SeekBar) findViewById(R.id.seekBar3)；
b1 = BitmapFactory.decodeResource(getResources(), R.drawable.fq);
b2 = Bitmap.createBitmap(b1.getWidth(), b1.getHeight(), b1.getConfig());
canvas = new Canvas(b2);
paint = new Paint();
paint.setColor(Color.BLACK);
matrix = new Matrix();
paint.setAntiAlias(true);
//颜色矩阵
cm = new ColorMatrix();
paint.setColorFilter(new ColorMatrixColorFilter(cm));
canvas.drawBitmap(b1, matrix, paint);
iv.setImageBitmap(b2);
//改变RGB中R的值
sb1.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
int progress = seekBar.getProgress();
cm.set(new float[]{
progress/128.0f,0,0,0,0,
0,1,0,0,0,
0,0,1,0,0,
0,0,0,1,0
});
paint.setColorFilter(new ColorMatrixColorFilter(cm));
canvas.drawBitmap(b1, matrix, paint);
iv.setImageBitmap(b2);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// TODO Auto-generated method stub
}
});
//改变RGB中G的值
sb2.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
int progress = seekBar.getProgress();
cm.set(new float[]{
1,0,0,0,0,
0,progress/128.0f,0,0,0,
0,0,1,0,0,
0,0,0,1,0
});
paint.setColorFilter(new ColorMatrixColorFilter(cm));
canvas.drawBitmap(b1, matrix, paint);
iv.setImageBitmap(b2);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// TODO Auto-generated method stub
}
});
//改变RGB中B的值
sb3.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
int progress = seekBar.getProgress();
cm.set(new float[]{
1,0,0,0,0,
0,1,0,0,0,
0,0,progress/128.0f,0,0,
0,0,0,1,0
});
paint.setColorFilter(new ColorMatrixColorFilter(cm));
canvas.drawBitmap(b1, matrix, paint);
iv.setImageBitmap(b2);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// TODO Auto-generated method stub
}
});
}
}
执行效果图如下：
