Android Seekbar Thumb

Question

我有一个搜索栏，我需要在我的搜索栏的拇指上应用 getTemperatureColor函数，以便在搜索栏上选择拇指时从线性渐变中获取颜色，但我没有得到任何颜色这样做的想法。任何帮助都将受到高度赞赏。

我有点想到它会是这样的

seekbar.getThumb（＆＃34;我在这里需要帮助来应用getTemperatureColor（）＆＃34;）;

MainActivity

public class MainActivity extends AppCompatActivity {

private SeekBar seekBar = null;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    seekBar = (SeekBar)findViewById(R.id.seekBar);

    final LinearGradient test = new LinearGradient(0.f, 0.f, 200.f, 380.f, new int[] { 0xFF0000FF, 0xFF00FF00, 0xFFFF0000},
            null, Shader.TileMode.CLAMP);

    RoundRectShape roundRectShape = new RoundRectShape(new float []{30f,30f,30f,30f,30f,30f,30f,30f},null,null);
    shape = new ShapeDrawable(roundRectShape);
    shape.getPaint().setShader(test);

    seekBar.setProgressDrawable((Drawable) shape);

   }

private int getTemperatureColor(float temperature) {
        //Color range from 0 - 40 degC
        float clipped = Math.max(0f, Math.min(40f, temperature));

        float scaled = ((40f - clipped) / 40f) * 255f;
        int blue = Math.round(scaled);
        int red = 255 - blue;

        return Color.rgb(red, 0, blue);
    }
}

Answer 1

有任何帮助吗？

 seekBar.getThumb().setColorFilter(getTemperatureColor(30), PorterDuff.Mode.ADD);