velocimeter-view android的测速仪效果的进度条 ，自定义VelocimeterView 的一个圆形进度条，

设置 app:inside_progress_color， app:external_progress_color，app:progress_blur_color， app:bottom_velocimeter_color， app:internal_velocimeter_color等几层view叠加实现的。

 

运行效果：

源码：

package com.github.glomadrian.velocimeter;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;import android.widget.SeekBar;import com.github.glomadrian.velocimeterlibrary.VelocimeterView;

public class MainActivity extends AppCompatActivity {

  private SeekBar seek;

  private VelocimeterView velocimeter;  private VelocimeterView velocimeter2;

  @Override protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    seek = (SeekBar) findViewById(R.id.seek);    seek.setOnSeekBarChangeListener(new SeekListener());    velocimeter = (VelocimeterView) findViewById(R.id.velocimeter);    velocimeter2 = (VelocimeterView) findViewById(R.id.velocimeter2);  }

  private class SeekListener implements SeekBar.OnSeekBarChangeListener {

    @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {

      velocimeter.setValue(progress, true);      velocimeter2.setValue(progress, true);    }

    @Override public void onStartTrackingTouch(SeekBar seekBar) {

      //Empty    }

    @Override public void onStopTrackingTouch(SeekBar seekBar) {

      //Empty    }  }}

 

项目完整源码：