Android Seekbar混合两种颜色的rgb代码

Question

使用搜索栏混合两种颜色的最佳方法是什么？我的seekBar从中间开始，混合颜色显示在imageview（red1，green1blue1，red2green2，blue2的平均值）当搜索栏向左移动时，它应该向颜色移动（red1，green1，blue1，）然后如果向右移动它应该更多的颜色（red2，green2blue2）。这是我的代码希望我解释得很好。

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.bignerdranch.android.colormixer.MixedColorScreen"
tools:showIn="@layout/activity_mixed_color_screen">




<SurfaceView
    android:layout_width="match_parent"
    android:layout_height="278dp"
    android:background="#000000"
    android:id="@+id/surfaceView3"></SurfaceView>

<SeekBar
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/seekBar"
    android:layout_below="@+id/surfaceView3"
    android:layout_marginTop="57dp"
    android:indeterminate="false"
    android:progress="255"
    android:max="510" />

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:text="Your Color"
    android:id="@+id/textView3"
    android:layout_below="@+id/seekBar"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="62dp" />

package com.bignerdranch.android.colormixer;

import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.SurfaceView;
import android.widget.SeekBar;
import android.widget.TextView;

public class MixedColorScreen extends AppCompatActivity {
private SeekBar mySeekBar;
private TextView seekText;
SurfaceView img;
private static final String TAG = "MYTAG";
private int red1,red2,green1,green2,blue1,blue2,
                        newRed,newGreen,newBlue;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_mixed_color_screen);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    mySeekBar = (SeekBar) findViewById(R.id.seekBar);
    seekText = (TextView) findViewById(R.id.textView3);


    Intent i = getIntent();

    red1 = i.getIntExtra("red1",150);
    green1 = i.getIntExtra("green1",150);
    blue1 =i.getIntExtra("blue1",150);
    red2 = i.getIntExtra("red2",150);
    green2 = i.getIntExtra("green2",150);;
    blue2 = i.getIntExtra("blue2",150);



    Log.i(TAG,"LOGING COLORS RED =" + red1 + red2 + "GREEN = " +
            green1 + green2 + "BLUE = " + blue1 + blue2);
    img = (SurfaceView) findViewById(R.id.surfaceView3);
    newRed = (red1+red2)/2;
    newGreen = (green1 +green2)/2;
    newBlue = (blue1+blue2)/2;
    Log.i(TAG,"RGB =  " + newRed +"  " + newGreen + "  " + newBlue);

    img.setBackgroundColor(Color.rgb(newRed, newGreen, newBlue));

    mySeekBar.setOnSeekBarChangeListener(new   SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            Log.i(TAG,"ONPROGRESSCHANGES");
            seekText.setText("SHOWING VALS- myprogres = " + mySeekBar.getProgress() + "/Max = " + mySeekBar.getMax() + "METHOD PROGRES = " + progress);
            //red1,green1,blue1 ;
            //red2,green2,blue2;

        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            Log.i(TAG,"ONSTARTTRACHINGTOUCH");
        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            Log.i(TAG,"ONSTOPTRACKING");
        }
    });

}

}