主要代码如下：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<android.jiang.com.progressview.ProgressView
android:id="@+id/ffff"
android:layout_width="match_parent"
android:layout_height="150dp"
android:background="@android:color/holo_red_dark"/>
<FrameLayout
android:id="@+id/id_content"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
package android.jiang.com.progressview;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.View;
import java.util.ArrayList;
import java.util.List;
/**
* Created by jiang on 16/2/24.
*/
public class ProgressView extends View {
/**
* 绘制的笔
*/
private Paint mPaint;
/**
* 控件的宽高
*/
private int mWidth;
private int mHeight;
/**
* 圆的半径
*/
private int circleRadius;
/**
* 圆弧的半径
*/
private int stokenRadius;
/**
* 圆弧的宽度
*/
private int stokenWidth;
/**
* 线与圆弧之间的距离
*/
private int linePadding;
/**
* 选中和没选中的颜色
*/
private int checkedColor = Color.WHITE;
private int uncheckedColor = Color.parseColor("#ECA6AD");
/**
* 文字的大小
*/
private int normaltextSize;
/**
* 文字距离顶部的距离
*/
private int textPaddingTop;
/**
* 个数
*/
private int circleCount = 0;
/**
* 文本的信息
*/
private Paint.FontMetricsInt fontMetricsInt;
/**
* 圆的y轴
*/
private int circlePointY;
/**
* 根据宽度算出平均分得的宽度
*/
private int everyWidth;
/**
* 数据
*/
private List<Model> mModels = new ArrayList<>();
/**
* 常量
*
* @param context
*/
public static final int CIRCLE_RADIUS = 4;
public static final int STOKEN_RADIUS = 9;
public static final int STOKEN_WIDTH = 2;
public static final int LINE_PADDING = 6;
public static final int TEXTPADDINGTOP = 10;
public static final int NORMALTEXTSIZE = 14;
public static final int AFTER = 144;
public static final int STARTING = 143;
public static final int BEFORE = 142;
public ProgressView(Context context) {
this(context, null);
}
public ProgressView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public ProgressView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
initValues();
initpaint();
}
/**
* 配置一些初始值
*/
private void initValues() {
circleRadius = Utils.dip2px(getContext(), CIRCLE_RADIUS);
stokenRadius = Utils.dip2px(getContext(), STOKEN_RADIUS);
stokenWidth = Utils.dip2px(getContext(), STOKEN_WIDTH);
linePadding = Utils.dip2px(getContext(), LINE_PADDING);
textPaddingTop = Utils.dip2px(getContext(), TEXTPADDINGTOP);
normaltextSize = Utils.sp2px(getContext(), NORMALTEXTSIZE);
}
/**
* 配置画笔
*/
private void initpaint() {
mPaint = new Paint();
mPaint.setStrokeWidth(stokenWidth);
mPaint.setTextSize(normaltextSize);
fontMetricsInt = mPaint.getFontMetricsInt();
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
configValues();
}
/**
* 配置需要用到的数据
*/
private void configValues() {
mWidth = getMeasuredWidth() - getPaddingLeft() - getPaddingRight();
mHeight = getMeasuredHeight() - getPaddingTop() - getPaddingBottom();
circlePointY = mHeight / 2;
everyWidth = mWidth / (circleCount + 1);
}
public void setData(List<Model> models) {
mModels = models;
fillInfo();
invalidate();
}
private void fillInfo() {
circleCount = mModels.size();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if (circleCount == 0)
return;
for (int i = 0; i < circleCount; i++) {
int color = getColor(i);
boolean needStoken = needStoken(i);
drawCircleWithParam(canvas, everyWidth * (i + 1), circlePointY, needStoken, color, mModels.get(i).name);
if (i == circleCount - 1)
return;
drawLine(canvas, everyWidth * (i + 1), everyWidth * (i + 2), getColor(i + 1));
}
}
private int getColor(int i) {
int color;
Model model = mModels.get(i);
if (model.state == BEFORE) {
color = checkedColor;
} else if (model.state == STARTING) {
color = checkedColor;
} else {
color = uncheckedColor;
}
return color;
}
private boolean needStoken(int i) {
boolean needStoken = false;
Model model = mModels.get(i);
if (model.state == ProgressView.STARTING) {
needStoken = true;
}
return needStoken;
}
/**
* 画线
*
* @param canvas
* @param circleStartX
* @param mayEndX
* @param color
*/
private void drawLine(Canvas canvas, int circleStartX, int mayEndX, int color) {
int startX = circleStartX + stokenRadius + stokenWidth + linePadding;
int endX = mayEndX - stokenWidth - stokenRadius - linePadding;
int startY = mHeight / 2;
mPaint.setStyle(Paint.Style.FILL);
mPaint.setColor(color);
canvas.drawLine(startX, startY, endX, startY, mPaint);
}
/**
* 画圆
*
* @param canvas
* @param circleX
* @param circleY
* @param needStoken
* @param color
* @param value
*/
private void drawCircleWithParam(Canvas canvas, int circleX, int circleY, boolean needStoken, int color, String value) {
mPaint.setStyle(Paint.Style.FILL);
mPaint.setColor(color);
canvas.drawCircle(circleX, circleY, circleRadius, mPaint);
int textWidth = (int) mPaint.measureText(value, 0, value.length());
int textStartX = circleX - textWidth / 2;
int textStartY = Math.abs(Math.abs(fontMetricsInt.bottom) + Math.abs(fontMetricsInt.top)) / 2 + circleY + textPaddingTop;
textStartY += stokenRadius + stokenWidth;
canvas.drawText(value, textStartX, textStartY, mPaint);
if (needStoken) {
mPaint.setStyle(Paint.Style.STROKE);
canvas.drawCircle(circleX, circleY, stokenRadius, mPaint);
}
}
static class Model {
String name;
public Model(String name, int state) {
this.name = name;
this.state = state;
}
int state; // BEFORE STARTING AFTER
}
}
package android.jiang.com.progressview;
import android.content.Context;
/**
* Created by jiang on 16/2/24.
*/
public class Utils {
/**
* dp2px
*/
public static int dip2px(Context context, float dpValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (dpValue * scale + 0.5f);
}
/**
* px2dp
*/
public static int px2dip(Context context, float pxValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (pxValue / scale + 0.5f);
}
/**
* 将px值转换为sp值，保证文字大小不变
*
* @return
*/
public static int px2sp(Context context, float pxValue) {
final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
return (int) (pxValue / fontScale + 0.5f);
}
/**
* 将sp值转换为px值，保证文字大小不变
*/
public static int sp2px(Context context, float spValue) {
final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
return (int) (spValue * fontScale + 0.5f);
}
}
package android.jiang.com.progressview;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
/**
* Created by jiang on 16/6/8.
*/
public class TestFragment extends Fragment {
public static TestFragment newInstance(int position, String name) {
Bundle args = new Bundle();
args.putInt("position", position);
args.putString("name", name);
TestFragment fragment = new TestFragment();
fragment.setArguments(args);
return fragment;
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
final int position = getArguments().getInt("position");
String name = getArguments().getString("name");
Button btn = new Button(container.getContext(), null);
btn.setGravity(Gravity.CENTER);
btn.setText("当前状态:" + name);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
((MainActivity) getActivity()).setPosition(position);
}
});
return btn;
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
}
}