如何让SeekBar改变不同位置的颜色？

Question

我需要让SeekBar有3个位置，这些位置会改变每个位置的颜色，绿色，黄色和红色。现在我还在开始代码

<SeekBar
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:layout_marginRight="10dp"
    android:max="3"/>

seekbar [颜色]

Answer 1

好的，我认为它应该对你有所帮助。我在colors.xml中创建了：

<resources>
<color name="colorPrimary">#3F51B5</color>
<color name="colorPrimaryDark">#303F9F</color>
<color name="colorAccent">#FF4081</color>
<color name="colorGreen">#32CD32</color>
<color name="colorYellow">#D9D919</color>
<color name="colorRed">#cc0000</color>

并在MainActivity.java我做了：

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

    seekBar = findViewById(R.id.seekBar);
    seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            if(progress == 2) seekBar.setProgressDrawable(getDrawable(R.color.colorYellow));
            if(progress == 3) seekBar.setProgressDrawable(getDrawable(R.color.colorRed));


        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {

        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {

        }
    });
}