Android 사용자 정의 view 라운드 비례 애니메이션 그리 기

본 논문 의 사례 는 안 드 로 이 드 사용자 정의 view 가 원 링 이 차지 하 는 애니메이션 의 구체 적 인 코드 를 공유 하여 여러분 에 게 참고 하 실 수 있 습 니 다.구체 적 인 내용 은 다음 과 같 습 니 다.
1.실현 효과 도

핵심 코드
1.사용자 정의 MyProgressView.자바

package com.czhappy.effectdemo.view;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.FontMetrics;
import android.graphics.Rect;
import android.graphics.RectF;
import android.os.Handler;
import android.os.Message;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.view.View;

import com.czhappy.effectdemo.R;
import com.czhappy.effectdemo.utils.ScreenUtil;


public class MyProgressView extends View {

 //        
 private Paint mCirclePaint;
 //       
 private Paint mRingDefaultPaint;
 //       
 private Paint mUsePaint;
 //       
 private Paint mRingPaint;
 //       
 private Paint mLinePaint;
 //       
 private Paint mTextPaint;
 //     
 private int mCircleColor;
 //     
 private int mRingColor;
 //   
 private float mRadius;
 //     
 private float mRingRadius;
 //     
 private float mStrokeWidth;
 //   x  
 private int mXCenter;
 //   y  
 private int mYCenter;
 //     
 private float mTxtWidth;
 //     
 private float mTxtHeight;
 //    
 private int mTotalProgress = 100;
 //     
 private int mProgress;
 //        
 private int mShowProgress;
 //     
 private String usedFlow;

 private Context mContext;

 private Handler circleHandler = new Handler(){

 public void handleMessage(Message msg) {
  super.handleMessage(msg);
  if(msg.what == 1){
  int temp = (Integer)msg.obj;
  setProgress(temp);
  }
 };
 };

 public MyProgressView(Context context, AttributeSet attrs) {
 super(context, attrs);
 mContext = context;
 //         
 initAttrs(context, attrs);
 initVariable();
 }

 private void initAttrs(Context context, AttributeSet attrs) {
 TypedArray typeArray = context.getTheme().obtainStyledAttributes(attrs,
  R.styleable.TasksCompletedView, 0, 0);
 mRadius = typeArray.getDimension(R.styleable.TasksCompletedView_radius, 80);
 mStrokeWidth = typeArray.getDimension(R.styleable.TasksCompletedView_strokeWidth, 10);
 mCircleColor = typeArray.getColor(R.styleable.TasksCompletedView_circleColor, 0xFFFFFFFF);
 mRingColor = typeArray.getColor(R.styleable.TasksCompletedView_ringColor, 0xFFFFFFFF);

 mRingRadius = mRadius + mStrokeWidth / 2;
 }

 private void initVariable() {
 //      
 mCirclePaint = new Paint();
 mCirclePaint.setAntiAlias(true);//   
 mCirclePaint.setColor(mCircleColor);
 mCirclePaint.setStyle(Paint.Style.FILL);

 //“  ”     
 mUsePaint = new Paint();
 mUsePaint.setAntiAlias(true);
 mUsePaint.setStyle(Paint.Style.FILL);
 mUsePaint.setColor(getResources().getColor(R.color.ticket_color));
 mUsePaint.setTextSize(ScreenUtil.sp2px(mContext, 10));

 //      
 mRingDefaultPaint = new Paint();
 mRingDefaultPaint.setAntiAlias(true);
 mRingDefaultPaint.setColor(getResources().getColor(R.color.default_ring_color));
 mRingDefaultPaint.setStyle(Paint.Style.STROKE);
 mRingDefaultPaint.setStrokeWidth(mStrokeWidth);

 //           
 mRingPaint = new Paint();
 mRingPaint.setAntiAlias(true);
 mRingPaint.setColor(mRingColor);
 mRingPaint.setStyle(Paint.Style.STROKE);
 mRingPaint.setStrokeWidth(mStrokeWidth);

 mTextPaint = new Paint();
 mTextPaint.setAntiAlias(true);
 mTextPaint.setStyle(Paint.Style.FILL);
 mTextPaint.setColor(Color.BLACK);
 mTextPaint.setTextSize(ScreenUtil.sp2px(mContext, 22));

 mLinePaint = new Paint();
 mLinePaint.setColor(Color.WHITE);


 //      
 FontMetrics fm = mTextPaint.getFontMetrics();
 mTxtHeight = (int) Math.ceil(fm.descent - fm.ascent);

 }

 @Override
 protected void onDraw(Canvas canvas) {

 mXCenter = getWidth() / 2;
 mYCenter = getHeight() / 2;

 //  
 canvas.drawCircle(mXCenter, mYCenter, mRadius, mCirclePaint);

 RectF oval = new RectF();
 oval.left = (mXCenter - mRingRadius);
 oval.top = (mYCenter - mRingRadius);
 oval.right = mRingRadius * 2 + (mXCenter - mRingRadius);
 oval.bottom = mRingRadius * 2 + (mYCenter - mRingRadius);
 //    
 canvas.drawArc(oval, -90, 360, false, mRingDefaultPaint);
 //       
 canvas.drawArc(oval, -90, ((float) mProgress / mTotalProgress) * 360, false, mRingPaint);
 //    
 String txt = mProgress + "%";
 //     
 mTxtWidth = mTextPaint.measureText(txt, 0, txt.length());
 canvas.drawText(txt, mXCenter - mTxtWidth / 2, mYCenter + mTxtHeight / 9, mTextPaint);

 Rect _pb = new Rect();
 String sup = "  ";
 mUsePaint.getTextBounds(sup, 0, sup.length(), _pb);
 int perX = mXCenter - _pb.width() / 2;
 canvas.drawText(sup, perX, mYCenter / 2, mUsePaint);

 if (!TextUtils.isEmpty(usedFlow)) {
  mUsePaint.getTextBounds(usedFlow, 0, usedFlow.length(), _pb);
  perX = mXCenter - _pb.width() / 2;
  canvas.drawText(usedFlow, perX, (float) (mYCenter + mYCenter / 1.7), mUsePaint);
 }

 //     
 Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.circle_bottom_bg);
 perX = mXCenter - bitmap.getWidth() / 2;
 canvas.drawBitmap(bitmap, perX, (float) (mYCenter + mYCenter / 5), mLinePaint);
 }

 /**
 *       
 * @param progress
 */
 public void setProgress(int progress) {
 mProgress = progress;
 postInvalidate();
 }

 /**
 *        
 * @param progress
 */
 public void setmShowProgress(int progress) {
 mShowProgress = progress;
 new Thread(new CircleThread()).start();
 }

 public void setUsedFlow(String usedFlow) {
 this.usedFlow = usedFlow;
 }


 private class CircleThread implements Runnable{

 int m=0;
 int i=0;

 @Override
 public void run() {
  // TODO Auto-generated method stub
  while(!Thread.currentThread().isInterrupted()){
  try {
   Thread.sleep(50);
   m++;
   Message msg = new Message();
   msg.what = 1;
   if(i < mShowProgress){
   i += m;
   }else{
   i = mShowProgress;
   return;
   }
   msg.obj = i;
   circleHandler.sendMessage(msg);
  } catch (InterruptedException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  }
 }

 }
}

2.FlowActivity.java

package com.czhappy.effectdemo.activity;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;

import com.czhappy.effectdemo.R;
import com.czhappy.effectdemo.view.MyProgressView;

/**
 * Description:
 * User: chenzheng
 * Date: 2017/1/21 0021
 * Time: 17:17
 */
public class FlowActivity extends AppCompatActivity {

 private MyProgressView mTasksView;

 @Override
 protected void onCreate(@Nullable Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_flow);

 initView();
 }

 private void initView() {
 mTasksView = (MyProgressView) findViewById(R.id.flow_prgress_view);
 }

 public void beginAnim(View view){
 mTasksView.setUsedFlow("200.0M");
 mTasksView.setmShowProgress(60);
 }
}

3.activity_flow.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tc="http://schemas.android.com/apk/res-auto"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:padding="10dp"
 android:background="#fff"
 android:gravity="center_horizontal"
 android:orientation="vertical">

 <Button
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:onClick="beginAnim"
 android:text="    "/>

 <com.czhappy.effectdemo.view.MyProgressView
 android:id="@+id/flow_prgress_view"
 android:layout_width="100dp"
 android:layout_height="100dp"
 tc:circleColor="@color/circle_color"
 tc:radius="44dp"
 tc:ringColor="@color/ring_color"
 tc:strokeWidth="6dp"
 android:layout_marginTop="10dp"/>

</LinearLayout>

이상 이 바로 본 고의 모든 내용 입 니 다.여러분 의 학습 에 도움 이 되 고 저 희 를 많이 응원 해 주 셨 으 면 좋 겠 습 니 다.