codigo 1

/ this block goes on a click event

int colorCode = 0xFF00FF00;
new ColorPickerDialog(MainActivity.this, new UpdateColor(), colorCode).show();


cod 2

// this blocks stays in this MoreBlock

}

public class UpdateColor implements ColorPickerDialog.OnColorChangedListener { public void colorChanged(int color) {

string = ("#"+String.format("%08x", color));
}
}

public static class ColorPickerDialog extends Dialog { 
public interface OnColorChangedListener { 
void colorChanged(int color); }
private OnColorChangedListener mListener; 
private int mInitialColor; 
private static class ColorPickerView extends View { 
private Paint mPaint; 
private Paint mCenterPaint; 
private final int[] mColors; 
private OnColorChangedListener mListener; 
ColorPickerView(Context c, OnColorChangedListener l, int color) { super(c); 
mListener = l; 
mColors = new int[] { 
0xFFFF00FF, 0xFF0000FF, 0xFF00FFFF, 0xFF00FF00, 0xFFFFFF00, 0xFFFF0000,
0xFFFF00FF}; 
Shader s = new SweepGradient(0, 0, mColors, null); 
mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); mPaint.setShader(s); mPaint.setStyle(Paint.Style.STROKE); mPaint.setStrokeWidth(dpToPx(64)); mCenterPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 
mCenterPaint.setColor(color); 
mCenterPaint.setStrokeWidth(5); } 
private boolean mTrackingCenter; 
private boolean mHighlightCenter; 

@Override protected void onDraw(Canvas canvas) { 
float r = CENTER_X - mPaint.getStrokeWidth()*0.5f; canvas.translate(CENTER_X, CENTER_X); 
canvas.drawOval(new RectF(-r, -r, r, r), mPaint); 
canvas.drawCircle(0, 0, CENTER_RADIUS, mCenterPaint); 
if (mTrackingCenter) { 
int c = mCenterPaint.getColor();
mCenterPaint.setStyle(Paint.Style.STROKE); 
if (mHighlightCenter) { mCenterPaint.setAlpha(0xFF); } 
else
{ mCenterPaint.setAlpha(0x80); } 
canvas.drawCircle(0, 0, CENTER_RADIUS + mCenterPaint.getStrokeWidth(), 
mCenterPaint);
mCenterPaint.setStyle(Paint.Style.FILL); 
mCenterPaint.setColor(c); } } 
@Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 
setMeasuredDimension(CENTER_X*2, CENTER_Y*2); } 
private int CENTER_X = dpToPx(132); 
private int CENTER_Y = dpToPx(132); 
private int CENTER_RADIUS = dpToPx(40); 
private int floatToByte(float x) { 
int n = java.lang.Math.round(x); return n; } 
private int pinToByte(int n) { 
if (n < 0) { n = 0; } 
else 
if (n > 255) { n = 255; } return n; }
private int dpToPx(int dp) { 
DisplayMetrics displayMetrics = getContext().getResources().getDisplayMetrics(); 
return Math.round(dp * (displayMetrics.xdpi / DisplayMetrics.DENSITY_DEFAULT)); } 
private int ave(int s, int d, float p) { 
return s + java.lang.Math.round(p * (d - s)); } 
private int interpColor(int colors[], float unit) { 
if (unit <= 0) { return colors[0]; } 
if (unit >= 1) { return colors[colors.length - 1]; } 
float p = unit * (colors.length - 1); 
int i = (int)p; p -= i; 
int c0 = colors[i]; 
int c1 = colors[i+1]; 
int a = ave(Color.alpha(c0), Color.alpha(c1), p); 
int r = ave(Color.red(c0), Color.red(c1), p); 
int g = ave(Color.green(c0), Color.green(c1), p); 
int b = ave(Color.blue(c0), Color.blue(c1), p); 
return Color.argb(a, r, g, b); } 
private int rotateColor(int color, float rad) { 
float deg = rad * 180 / 3.1415927f; int r = Color.red(color); 
int g = Color.green(color); 
int b = Color.blue(color); 
ColorMatrix cm = new ColorMatrix();
ColorMatrix tmp = new ColorMatrix(); 
cm.setRGB2YUV(); 
tmp.setRotate(0, deg); 
cm.postConcat(tmp); 
tmp.setYUV2RGB(); 
cm.postConcat(tmp); 
final float[] a = cm.getArray(); 
int ir = floatToByte(a[0] * r + a[1] * g + a[2] * b); 
int ig = floatToByte(a[5] * r + a[6] * g + a[7] * b); 
int ib = floatToByte(a[10] * r + a[11] * g + a[12] * b); 
return Color.argb(Color.alpha(color), pinToByte(ir), pinToByte(ig), pinToByte(ib)); } 
private static final float PI = 3.1415926f; 

@Override public boolean onTouchEvent(MotionEvent event) { 
float x = event.getX() - CENTER_X; 
float y = event.getY() - CENTER_Y; 
boolean inCenter = java.lang.Math.hypot(x, y) <= CENTER_RADIUS; 
switch (event.getAction()) { 
case MotionEvent.ACTION_DOWN: 
mTrackingCenter = inCenter; 
if (inCenter) { mHighlightCenter = true; 
invalidate(); 
break; } 
case MotionEvent.ACTION_MOVE: 
if (mTrackingCenter) { 
if (mHighlightCenter != inCenter) { mHighlightCenter = inCenter;
invalidate(); } } 
else { float angle = (float)java.lang.Math.atan2(y, x); 

float unit = angle/(2*PI);
if (unit < 0) { unit += 1; } 
mCenterPaint.setColor(interpColor(mColors, unit)); 
invalidate(); } 
break; 
case MotionEvent.ACTION_UP: 
if (mTrackingCenter) { 
if (inCenter) { 
mListener.colorChanged(mCenterPaint.getColor()); } 
mTrackingCenter = false; invalidate(); } break; } return true; } } 

public ColorPickerDialog(Context context, 
OnColorChangedListener listener, int initialColor) { super(context); 
mListener = listener; mInitialColor = initialColor; }

@Override protected void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
OnColorChangedListener l = new OnColorChangedListener() { 
public void colorChanged(int color) { 
mListener.colorChanged(color); dismiss(); } }; 

setContentView(new ColorPickerView(getContext(), l, mInitialColor)); 
} }

{