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如何在Android應(yīng)用中利用節(jié)點(diǎn)實(shí)現(xiàn)一個(gè)進(jìn)度條?針對(duì)這個(gè)問題,這篇文章詳細(xì)介紹了相對(duì)應(yīng)的分析和解答,希望可以幫助更多想解決這個(gè)問題的小伙伴找到更簡(jiǎn)單易行的方法。
main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/rl_parent" xmlns:tools="http://schemas.android.com/tools" 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" android:background="#ffffff" tools:context=".MainActivity" xmlns:app="http://schemas.android.com/apk/res/com.demo.demomutiprogress"> <com.demo.demomutiprogress.MutiProgress android:id="@+id/mp_1" android:layout_width="match_parent" android:layout_height="100dp" app:nodesNum="4" app:currNodeState="1" app:currNodeNO="2" app:nodeRadius="10dp" app:processingLineColor="#7B68EE" app:unprogressingDrawable="@drawable/ic_round_ddd" app:progressingDrawable="@drawable/ic_completed" app:progresFailDrawable="@drawable/ic_error" app:progresSuccDrawable="@drawable/ic_checked"/> <com.demo.demomutiprogress.MutiProgress android:id="@+id/mp_2" android:layout_below="@+id/mp_1" android:layout_marginTop="20dp" android:layout_width="match_parent" android:layout_height="30dp" app:nodesNum="10" app:currNodeState="1" app:currNodeNO="6" app:nodeRadius="6dp" app:processingLineColor="#7B68EE" app:progressingDrawable="@drawable/ic_completed" app:unprogressingDrawable="@drawable/ic_round_ddd" app:progresFailDrawable="@drawable/ic_error" app:progresSuccDrawable="@drawable/ic_checked"/> <com.demo.demomutiprogress.MutiProgress android:id="@+id/mp_3" android:layout_below="@+id/mp_2" android:layout_marginTop="20dp" android:layout_width="match_parent" android:layout_height="50dp" app:nodesNum="15" app:currNodeState="0" app:currNodeNO="10" app:nodeRadius="4dp" app:processingLineColor="#FF00FF" app:progressingDrawable="@drawable/ic_completed" app:unprogressingDrawable="@drawable/ic_round_ddd" app:progresFailDrawable="@drawable/ic_error" app:progresSuccDrawable="@drawable/ic_checked"/> </RelativeLayout>
attrs.xml
<?xml version="1.0" encoding="utf-8"?> <resources> <declare-styleable name="MutiProgress"> <attr name="nodesNum" format="integer"/> <!-- 節(jié)點(diǎn)數(shù)量 --> <attr name="nodeRadius" format="dimension"/> <attr name="progressingDrawable" format="reference"></attr> <attr name="unprogressingDrawable" format="reference" /> <!-- 未完成的節(jié)點(diǎn)圖標(biāo) --> <attr name="progresFailDrawable" format="reference" /> <attr name="progresSuccDrawable" format="reference" /> <attr name="processingLineColor" format="color"></attr> <attr name="currNodeNO" format="integer"></attr> <!-- 當(dāng)前所到達(dá)的節(jié)點(diǎn)編號(hào) 0開始計(jì)算--> <attr name="currNodeState" format="integer"></attr> <!-- 當(dāng)前所到達(dá)的節(jié)點(diǎn)狀態(tài),0:失敗 1:成功 --> </declare-styleable> </resources>
MutiProgress.java
package com.demo.demomutiprogress; import java.util.ArrayList; import android.content.Context; import android.content.res.TypedArray; import android.graphics.Bitmap; import android.graphics.Bitmap.Config; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Point; import android.graphics.Rect; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.util.Log; import android.view.View; /** * 多節(jié)點(diǎn)進(jìn)度條自定義視圖 * @author huqiang * */ public class MutiProgress extends View{ private int nodesNum ; //節(jié)點(diǎn)數(shù)量 private Drawable progressingDrawable; //進(jìn)行中的圖標(biāo) private Drawable unprogressingDrawable; private Drawable progresFailDrawable; //失敗的節(jié)點(diǎn) private Drawable progresSuccDrawable; //成功的節(jié)點(diǎn) private int nodeRadius; //節(jié)點(diǎn)的半徑 private int processingLineColor; //進(jìn)度條的顏色 // private int progressLineHeight; //進(jìn)度條的高度 private int currNodeNO; //當(dāng)前進(jìn)行到的節(jié)點(diǎn)編號(hào)。從0開始計(jì)算 private int currNodeState; //當(dāng)前進(jìn)行到的節(jié)點(diǎn)編號(hào)所對(duì)應(yīng)的狀態(tài) 0:失敗 1:成功 // private int textSize; //字體大小 Context mContext; int mWidth,mHeight; private Paint mPaint; private Canvas mCanvas; private Bitmap mBitmap; //mCanvas繪制在這上面 private ArrayList<Node> nodes; private int DEFAULT_LINE_COLOR = Color.BLUE; public MutiProgress(Context context) { this(context,null); } public MutiProgress(Context context, AttributeSet attrs) { this(context,attrs,0); } public MutiProgress(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); mContext = context; TypedArray mTypedArray = context.obtainStyledAttributes(attrs,R.styleable.MutiProgress); nodesNum = mTypedArray.getInteger(R.styleable.MutiProgress_nodesNum, 1); //默認(rèn)一個(gè)節(jié)點(diǎn) nodeRadius = mTypedArray.getDimensionPixelSize(R.styleable.MutiProgress_nodeRadius, 10); //節(jié)點(diǎn)半徑 progressingDrawable = mTypedArray.getDrawable(R.styleable.MutiProgress_progressingDrawable); unprogressingDrawable = mTypedArray.getDrawable(R.styleable.MutiProgress_unprogressingDrawable); progresFailDrawable = mTypedArray.getDrawable(R.styleable.MutiProgress_progresFailDrawable); progresSuccDrawable = mTypedArray.getDrawable(R.styleable.MutiProgress_progresSuccDrawable); processingLineColor = mTypedArray.getColor(R.styleable.MutiProgress_processingLineColor, DEFAULT_LINE_COLOR); currNodeState = mTypedArray.getInt(R.styleable.MutiProgress_currNodeState, 1); currNodeNO = mTypedArray.getInt(R.styleable.MutiProgress_currNodeNO, 1); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); mWidth = getMeasuredWidth(); mHeight = getMeasuredHeight(); mBitmap = Bitmap.createBitmap(mWidth, mHeight, Config.ARGB_8888); mPaint = new Paint(); mPaint.setColor(processingLineColor); mPaint.setAntiAlias(true); mPaint.setStrokeJoin(Paint.Join.ROUND); // 圓角 mPaint.setStrokeCap(Paint.Cap.ROUND); // 圓角 mCanvas = new Canvas(mBitmap); nodes = new ArrayList<MutiProgress.Node>(); float nodeWidth = ((float)mWidth)/(nodesNum-1); for(int i=0;i<nodesNum;i++) { Node node = new Node(); if(i==0) node.mPoint = new Point(((int)nodeWidth*i),mHeight/2-nodeRadius); else if(i==(nodesNum-1)) node.mPoint = new Point(((int)nodeWidth*i)-nodeRadius*2,mHeight/2-nodeRadius); else node.mPoint = new Point(((int)nodeWidth*i)-nodeRadius,mHeight/2-nodeRadius); if(currNodeNO == i) node.type = 1; //當(dāng)前進(jìn)度所到達(dá)的節(jié)點(diǎn) else node.type = 0; //已完成 nodes.add(node); } } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); DrawProgerss(); Log.v("ondraw", "mBitmap="+mBitmap); if(mBitmap!=null) { canvas.drawBitmap(mBitmap, new Rect(0,0,mBitmap.getWidth(),mBitmap.getHeight()), new Rect(0,0,mBitmap.getWidth(),mBitmap.getHeight()), mPaint); } for(int i=0;i<nodes.size();i++) { Node node = nodes.get(i); Log.v("ondraw", node.mPoint.x +";y="+node.mPoint.y); if(i<currNodeNO) //已完成的進(jìn)度節(jié)點(diǎn) { progressingDrawable.setBounds(node.mPoint.x, node.mPoint.y , node.mPoint.x + nodeRadius*2,node.mPoint.y + nodeRadius*2); progressingDrawable.draw(canvas); } else if(i==currNodeNO) //當(dāng)前所到達(dá)的進(jìn)度節(jié)點(diǎn)(終點(diǎn)) { if(currNodeState == 1) //判斷是成功還是失敗 0 :失敗 1:成功 { progresSuccDrawable.setBounds(node.mPoint.x, node.mPoint.y , node.mPoint.x + nodeRadius*2,node.mPoint.y + nodeRadius*2); progresSuccDrawable.draw(canvas); } else { progresFailDrawable.setBounds(node.mPoint.x, node.mPoint.y , node.mPoint.x + nodeRadius*2,node.mPoint.y + nodeRadius*2); progresFailDrawable.draw(canvas); } } else //未完成的進(jìn)度節(jié)點(diǎn) { unprogressingDrawable.setBounds(node.mPoint.x, node.mPoint.y , node.mPoint.x + nodeRadius*2,node.mPoint.y + nodeRadius*2); unprogressingDrawable.draw(canvas); } } } private void DrawProgerss() { //先畫背景 Paint bgPaint = new Paint(); bgPaint.setColor(Color.parseColor("#f0f0f0")); mCanvas.drawRect(0, 0, mWidth, mHeight, bgPaint); //先畫線段,線段的高度為nodeRadius/2 mPaint.setStrokeWidth(nodeRadius/2); //前半截線段 // mCanvas.drawLine(nodeRadius, mHeight/2, mWidth-nodeRadius, mHeight/2, mPaint); //線段2端去掉nodeRadius mCanvas.drawLine(nodeRadius, mHeight/2, nodes.get(currNodeNO).mPoint.x + nodeRadius, nodes.get(currNodeNO).mPoint.y + nodeRadius, mPaint); //線段2端去掉nodeRadius //后半截線段 mPaint.setColor(Color.parseColor("#dddddd")); mCanvas.drawLine(nodes.get(currNodeNO).mPoint.x +nodeRadius, nodes.get(currNodeNO).mPoint.y + nodeRadius, mWidth-nodeRadius, mHeight/2, mPaint); //線段2端去掉nodeRadius } class Node { Point mPoint; int type; //0:已完成 1:當(dāng)前到達(dá)的進(jìn)度節(jié)點(diǎn) } }
關(guān)于如何在Android應(yīng)用中利用節(jié)點(diǎn)實(shí)現(xiàn)一個(gè)進(jìn)度條問題的解答就分享到這里了,希望以上內(nèi)容可以對(duì)大家有一定的幫助,如果你還有很多疑惑沒有解開,可以關(guān)注億速云行業(yè)資訊頻道了解更多相關(guān)知識(shí)。
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