Android圆形进度显示控件的SectorProgressView的使用

一个圆形的进度显示控件，用圆中扇形的角度大小来表示进度信息

开源组件来自：http://p.codekk.com/detail/Android/timqi/SectorProgressView

直接拿取SectorProgressView.java类和attr.xml使用，复制到自己的项目中，

效果图：

进度百分比和起始角度都可以设置

在res/values 文件下定义一个attrs.xml 文件：

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="SectorProgressView">
        <attr name="bgColor" format="color"/>
        <attr name="fgColor" format="color"/>
        <attr name="percent" format="float"/>
        <attr name="startAngle" format="float"/>
    </declare-styleable>
</resources>

自定义SectorProgressView

package com.example.sectorprogressviewdemo;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.view.View;

public class SectorProgressView extends View {
    private int bgColor;
    private int fgColor;
    private float startAngleBg, lengthAngleBg, startAngleFg, lengthAngleFg;

    private Paint bgPaint;
    private Paint fgPaint;
    private RectF oval;

    public SectorProgressView(Context context, AttributeSet attrs) {
        super(context, attrs);
        TypedArray a = context.getTheme().obtainStyledAttributes(attrs,
                R.styleable.SectorProgressView,
                0,0);

        try {
            bgColor = a.getColor(R.styleable.SectorProgressView_bgColor, 0xffe5e5e5);
            fgColor = a.getColor(R.styleable.SectorProgressView_fgColor, 0xffff765c);
            percent = a.getFloat(R.styleable.SectorProgressView_percent, 0);
            startAngle = a.getFloat(R.styleable.SectorProgressView_startAngle, 0);
            computeArcArgs(startAngle, percent);

        } finally {
            a.recycle();
        }

        init();
    }

    private void computeArcArgs(float startAngle, float percent) {
        this.lengthAngleFg = percent*36/10;
        this.lengthAngleBg = 360-lengthAngleFg;
        this.startAngleFg = startAngle;
        this.startAngleBg = startAngleFg +lengthAngleFg;
    }

    private void init() {
        bgPaint = new Paint();
        bgPaint.setColor(bgColor);

        fgPaint = new Paint();
        fgPaint.setColor(fgColor);
    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);

        float xpad = (float)(getPaddingLeft()+getPaddingRight());
        float ypad = (float)(getPaddingBottom()+ getPaddingTop());

        float wwd = (float)w - xpad;
        float hhd = (float)h - ypad;

        oval = new RectF(getPaddingLeft(), getPaddingTop(), getPaddingLeft()+wwd, getPaddingTop()+hhd);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        canvas.drawArc(oval, startAngleBg, lengthAngleBg, true, bgPaint);
        canvas.drawArc(oval, startAngleFg, lengthAngleFg, true, fgPaint);
    }

    public int getBgColor() {
        return bgColor;
    }

    public void setBgColor(int bgColor) {
        this.bgColor = bgColor;
        refreshTheLayout();
    }

    public int getFgColor() {
        return fgColor;
    }

    public void setFgColor(int fgColor) {
        this.fgColor = fgColor;
        refreshTheLayout();
    }


    private void refreshTheLayout() {
        invalidate();
        requestLayout();
    }

    private float percent;

    public float getStartAngle() {
        return startAngle;
    }

    public void setStartAngle(float startAngle) {
        this.startAngle = startAngle;
        computeArcArgs(startAngle, percent);
        invalidate();
        requestLayout();
    }

    public float getPercent() {
        return percent;
    }

    public void setPercent(float percent) {
        this.percent = percent;
        computeArcArgs(startAngle, percent);
        invalidate();
        requestLayout();
    }

    private float startAngle;

}

布局：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    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">

    <com.example.sectorprogressviewdemo.SectorProgressView
        android:id="@+id/spv"
        android:layout_width="280dp"
        android:layout_height="280dp"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="20dp"
        app:bgColor="#e5e5e5"
        app:fgColor="#CD3700"
        app:percent="25"
        app:startAngle="0" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/llStartAngle"
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="20dp"
        android:gravity="center_vertical"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="startAngle: " />

        <SeekBar
            android:id="@+id/sbStartAngle"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1" />

    </LinearLayout>

    <LinearLayout
        android:id="@+id/llPercent"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_above="@id/llStartAngle"
        android:layout_marginBottom="20dp"
        android:gravity="center_vertical"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="     percent: " />

        <SeekBar
            android:id="@+id/sbPercent"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1" />

    </LinearLayout>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="30dp"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:id="@+id/tvTip"
        android:layout_below="@+id/spv"
        android:layout_centerHorizontal="true"/>


</RelativeLayout>

在main中使用：

package com.example.sectorprogressviewdemo;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;

public class MainActivity extends Activity implements OnSeekBarChangeListener {

	private TextView tvTip;
	private SectorProgressView spv;
	private SeekBar sbPercent;
	private int percent;
	private SeekBar sbStartAngle;
	private int startAngle;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		tvTip = (TextView) findViewById(R.id.tvTip);
		spv = (SectorProgressView) findViewById(R.id.spv);
		sbPercent = (SeekBar) findViewById(R.id.sbPercent);
		sbPercent.setMax(100);
		sbPercent.setProgress(25);//设置起始百分比
//		sbPercent.setBackgroundColor(0xffCD3700);//xml中和java代码都可以设置
		percent=25;

		sbStartAngle = (SeekBar) findViewById(R.id.sbStartAngle);
		sbStartAngle.setMax(360);
		sbStartAngle.setProgress(0);//设置起始角度
		startAngle = 0;

		sbPercent.setOnSeekBarChangeListener(this);
		sbStartAngle.setOnSeekBarChangeListener(this);
		showTip();
	}
	
	@Override
	public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
		// TODO Auto-generated method stub
		switch (seekBar.getId()) {
		case R.id.sbPercent:
			spv.setPercent(progress);
			percent=progress;
			break;
		case R.id.sbStartAngle:
			spv.setStartAngle(progress);
			startAngle=progress;
			break;
		default:
			break;
		}
		showTip();
	}

	@Override
	public void onStartTrackingTouch(SeekBar seekBar) {
		// TODO Auto-generated method stub
	}
	@Override
	public void onStopTrackingTouch(SeekBar seekBar) {
		// TODO Auto-generated method stub
		
	}
	protected void showTip() {
		// TODO Auto-generated method stub
		 tvTip.setText("percent: " + percent + ";  startAngle: " + startAngle);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}