Android 仿支付宝中的余额宝收益进度条

一、 看效果

二、上代码

package com.framework.widget;
import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.view.View;
import com.R;

public class ProfitProgerssBar extends View {
 //背景色
 private static final int DEFAULT_BACK_COLOR = Color.parseColor("#ffffff");
 //字的颜色
 private static final int DEFAULT_TEXT_COLOR = Color.parseColor("#ffffff");
 //进度条背景颜色
 private static final int DEFAULT_PROGRESS_COLOR = Color.parseColor("#abacaf");
 //进度条默认的高度
 private static final float DEFAULT_PROGRESS_HEIGHT =120f;
 //文字的大小
 private static final float DEFAULT_TEXT_SIZE = 50;
 
 private static final int MARGIN_SIZE = 20;
 private Context context;
 
 private Paint backgroundPaint;
 
 private Paint progressPaint;
 
 private Paint textPaint;
 
 private int view_background_width;
 
 private float view_background_height = DEFAULT_PROGRESS_HEIGHT;
 
 private String date = "2016/12/07";
 
 private String desc = "2.1234";
 
 private int progress = 70;
 //进度条颜色
 private int progress_color = DEFAULT_PROGRESS_COLOR;
 //背景色
 private int progress_back_color = DEFAULT_BACK_COLOR;
 //字的颜色
 private int text_color = DEFAULT_TEXT_COLOR;
 //字的大小
 private float TEXT_SIZE = DEFAULT_TEXT_SIZE;
 public ProfitProgerssBar(Context context) {
  super(context);
  initView(context);
 }
 public ProfitProgerssBar(Context context, AttributeSet attrs) {
  super(context, attrs);
  initView(context);
 }
 public ProfitProgerssBar(Context context, AttributeSet attrs, int defStyleAttr) {
  super(context, attrs, defStyleAttr);
  initView(context);
 }
 private void initView(Context context) {
  this.context = context;
  TypedArray typedArray = this.context.obtainStyledAttributes(R.styleable.ProfitProgerssBar);
  progress_back_color = typedArray.getColor(R.styleable.ProfitProgerssBar_progress_backg_color,DEFAULT_BACK_COLOR);
  text_color = typedArray.getColor(R.styleable.ProfitProgerssBar_progress_text_color,DEFAULT_TEXT_COLOR);
  TEXT_SIZE = typedArray.getDimension(R.styleable.ProfitProgerssBar_progress_text_size,DEFAULT_TEXT_SIZE);
  backgroundPaint = new Paint();
  backgroundPaint.setStrokeWidth(10);
  backgroundPaint.setColor(progress_back_color);
  backgroundPaint.setDither(true);
  backgroundPaint.setAntiAlias(true);
  progressPaint = new Paint();
  progressPaint.setStrokeWidth(10);
  progressPaint.setDither(true);
  progressPaint.setAntiAlias(true);
  textPaint = new Paint();
  textPaint.setStrokeWidth(10);
  textPaint.setDither(true);
  textPaint.setAntiAlias(true);
  textPaint.setTextSize(TEXT_SIZE);
  DisplayMetrics d = new DisplayMetrics();
  ((Activity) context).getWindowManager().getDefaultDisplay().getMetrics(d);
  view_background_width = d.widthPixels;
 }
 
 public void init(String date,String desc,int progress,int progressColor){
  this.date = date;
  this.desc = desc;
  this.progress = progress;
  this.progress_color = progressColor;
 }
 @Override
 protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);
  view_background_height = this.getMeasuredHeight();
  RectF r = new RectF();
  r.left = 0;
  r.top = 0;
  r.right = view_background_width;
  r.bottom = view_background_height;////------------------------
  canvas.drawRect(r, backgroundPaint);
  RectF r1 = new RectF();
  r1.left = 0;
  r1.top = 0;
  r1.right = view_background_width * progress / 100;
  r1.bottom = view_background_height;////------------------------
  progressPaint.setColor(progress_color);
  canvas.drawRect(r1, progressPaint);
  textPaint.setColor(text_color);
  Rect r2 = new Rect();
  textPaint.getTextBounds(date,0,date.length(),r2);
  canvas.drawText(date, MARGIN_SIZE, (view_background_height-r2.top)/2, textPaint);//日期
  Rect r3 = new Rect();
  textPaint.getTextBounds(desc,0,desc.length(),r3);
  if(progress>95&&progress<100){
   canvas.drawText(desc, r1.right-textPaint.measureText(desc)-MARGIN_SIZE-30,(view_background_height-r3.top)/2, textPaint);
  }else if(progress>=100) {
   canvas.drawText(desc, r1.right-textPaint.measureText(desc)-MARGIN_SIZE-45,(view_background_height-r3.top)/2, textPaint);
  }else {
   canvas.drawText(desc, r1.right - textPaint.measureText(desc) - MARGIN_SIZE, (view_background_height - r3.top) / 2, textPaint);
  }
  invalidate();
 }
}

三、

<com.framework.widget.ProfitProgerssBar
 android:layout_width="match_parent"
 android:layout_height="35dp"
 android:layout_marginLeft="10dp"
 android:layout_marginRight="10dp"
 android:layout_marginTop="10dp"
 app:progress_back_color="@color/white"
 app:progress_text_color="@color/white"
 app:progress_text_size="14dp"
 android:id="@+id/profitProgerssBar"
 />
<declare-styleable name="ProfitProgerssBar">
 <attr name="progress_backg_color" format="color"/>
 <attr name="progress_text_color" format="color"/>
 <attr name="progress_text_size" format="dimension"/>
</declare-styleable>

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