Android最好看的圆形进度条ProgressBar
16lz
2021-12-04
Android最好看的圆形进度条ProgressBar
系统自带的比较老土
布局文件：activity_main.xml
<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" tools:context=".MainActivity"> <ProgressBar style="@android:style/Widget.ProgressBar.Small" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <ProgressBar android:layout_width="wrap_content" android:layout_height="wrap_content" /> <ProgressBar style="@android:style/Widget.ProgressBar.Large" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <ProgressBar style="@android:style/Widget.ProgressBar.Horizontal" android:layout_width="match_parent" android:layout_height="wrap_content" android:max="100" android:progress="18" /> <ProgressBar style="@android:style/Widget.ProgressBar.Horizontal" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="10dp" android:indeterminate="true" />LinearLayout>展示视图控制文件：MainActivity
package com.example.lenovo.myapplication;import android.app.Activity;import android.os.Bundle;public class MainActivity extends Activity{ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); }}看看自己写的圆形好看进度条
布局文件：activity_main.xml
"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" tools:context=".MainActivity"> <com.example.lenovo.myapplication.CirclePgBar android:layout_width="wrap_content" android:layout_height="wrap_content" /> 自己编辑的进度条文件：CirclePgBar
package com.example.lenovo.myapplication;import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.RectF;import android.util.AttributeSet;import android.view.View;/** * Created by yang_zzheng on 2016/7/12 * yangzhizheng2012@163.com */public class CirclePgBar extends View { private Paint mBackPaint; private Paint mFrontPaint; private Paint mTextPaint; private float mStrokeWidth = 50; private float mHalfStrokeWidth = mStrokeWidth / 2; private float mRadius = 200; private RectF mRect; private int mProgress = 0; //目标值，想改多少就改多少 private int mTargetProgress = 90; private int mMax = 100; private int mWidth; private int mHeight; public CirclePgBar(Context context) { super(context); init(); } public CirclePgBar(Context context, AttributeSet attrs) { super(context, attrs); init(); } public CirclePgBar(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); init(); } //完成相关参数初始化 private void init() { mBackPaint = new Paint(); mBackPaint.setColor(Color.WHITE); mBackPaint.setAntiAlias(true); mBackPaint.setStyle(Paint.Style.STROKE); mBackPaint.setStrokeWidth(mStrokeWidth); mFrontPaint = new Paint(); mFrontPaint.setColor(Color.GREEN); mFrontPaint.setAntiAlias(true); mFrontPaint.setStyle(Paint.Style.STROKE); mFrontPaint.setStrokeWidth(mStrokeWidth); mTextPaint = new Paint(); mTextPaint.setColor(Color.GREEN); mTextPaint.setAntiAlias(true); mTextPaint.setTextSize(80); mTextPaint.setTextAlign(Paint.Align.CENTER); } //重写测量大小的onMeasure方法和绘制View的核心方法onDraw() @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); mWidth = getRealSize(widthMeasureSpec); mHeight = getRealSize(heightMeasureSpec); setMeasuredDimension(mWidth, mHeight); } @Override protected void onDraw(Canvas canvas) { initRect(); float angle = mProgress / (float) mMax * 360; canvas.drawCircle(mWidth / 2, mHeight / 2, mRadius, mBackPaint); canvas.drawArc(mRect, -90, angle, false, mFrontPaint); canvas.drawText(mProgress + "%", mWidth / 2 + mHalfStrokeWidth, mHeight / 2 + mHalfStrokeWidth, mTextPaint); if (mProgress < mTargetProgress) { mProgress += 1; invalidate(); } } public int getRealSize(int measureSpec) { int result = 1; int mode = MeasureSpec.getMode(measureSpec); int size = MeasureSpec.getSize(measureSpec); if (mode == MeasureSpec.AT_MOST || mode == MeasureSpec.UNSPECIFIED) { //自己计算 result = (int) (mRadius * 2 + mStrokeWidth); } else { result = size; } return result; } private void initRect() { if (mRect == null) { mRect = new RectF(); int viewSize = (int) (mRadius * 2); int left = (mWidth - viewSize) / 2; int top = (mHeight - viewSize) / 2; int right = left + viewSize; int bottom = top + viewSize; mRect.set(left, top, right, bottom); } }}展示视图控制文件：MainActivity
package com.example.lenovo.myapplication;import android.app.Activity;import android.os.Bundle;public class MainActivity extends Activity{ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); }}本文参考学习：http://blog.csdn.net/coder_pig/article/details/47304109
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