Android按钮式进度条
1 package com.example.progress.demo; 2 3 import android.annotation.SuppressLint; 4 import android.content.Context; 5 import android.content.res.TypedArray; 6 import android.graphics.Canvas; 7 import android.graphics.Color; 8 import android.graphics.Paint; 9 import android.graphics.Paint.FontMetrics; 10 import android.graphics.RectF; 11 import android.util.AttributeSet; 12 import android.util.Log; 13 import android.view.MotionEvent; 14 import android.view.View; 15 16 import com.example.firstapp.R; 17 18 @SuppressLint("DrawAllocation") 19 public class ProgressButton extends View { 20 private FontMetrics fm; 21 private int progress = 0; 22 private int textColor = Color.WHITE; 23 private Paint paint; 24 private float textSize = 10; 25 private int foreground; 26 private int backgroundColor; 27 private String text; 28 private int max = 100; 29 private int corner = 5;// 圆角的弧度 30 private OnProgressButtonClickListener buttonClickListener; 31 32 public ProgressButton(Context context, AttributeSet attrs) { 33 super(context, attrs); 34 init(context, attrs); 35 } 36 37 public ProgressButton(Context context, AttributeSet attrs, int defStyle) { 38 super(context, attrs, defStyle); 39 init(context, attrs); 40 } 41 42 private void init(Context context, AttributeSet attrs) { 43 TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.ProgressButton); 44 this.backgroundColor = typedArray.getInteger(R.styleable.ProgressButton_background, Color.parseColor("#C6C6C6")); 45 this.foreground = typedArray.getInteger(R.styleable.ProgressButton_foreground, Color.rgb(20,131,214)); 46 this.textColor = typedArray.getInteger(R.styleable.ProgressButton_textcolor, Color.WHITE); 47 this.max = typedArray.getInteger(R.styleable.ProgressButton_max, 100); 48 this.progress = typedArray.getInteger(R.styleable.ProgressButton_progress, 0); 49 this.text = typedArray.getString(R.styleable.ProgressButton_text); 50 this.textSize = typedArray.getDimension(R.styleable.ProgressButton_textSize, 20); 51 typedArray.recycle(); 52 } 53 54 @Override 55 protected void onDraw(Canvas canvas) { 56 super.onDraw(canvas); 57 paint = new Paint(); 58 paint.setAntiAlias(true); 59 paint.setStrokeWidth(5); 60 61 /** 62 * 绘制背景 63 */ 64 RectF oval = new RectF(0, 0, getWidth(), getHeight()); 65 66 paint.setColor(this.backgroundColor); 67 canvas.drawRoundRect(oval, corner, corner, paint); 68 69 /*** 70 * 绘制进度值 71 */ 72 73 paint.setColor(foreground); 74 if (progress <= corner) { 75 oval = new RectF(0, corner - progress, getWidth() * this.progress / this.max, getHeight() 76 - corner + progress); 77 canvas.drawRoundRect(oval, progress,progress, paint); 78 } else { 79 oval = new RectF(0, 0, getWidth() * this.progress / this.max, getHeight()); 80 canvas.drawRoundRect(oval, corner, corner, paint); 81 } 82 83 /*** 84 * 绘制文本 85 */ 86 if ("".equals(text) || text == null) { 87 return; 88 } 89 paint.setTextSize(this.textSize); 90 fm = paint.getFontMetrics(); 91 paint.setColor(this.textColor); 92 93 float textCenterVerticalBaselineY = getHeight() / 2 - fm.descent + (fm.descent - fm.ascent) / 2; 94 canvas.drawText(this.text, (getMeasuredWidth() - paint.measureText(this.text)) / 2, textCenterVerticalBaselineY, 95 paint); 96 97 98 } 99 100 /** 101 * 设置最大值 102 * 103 * @param max 104 */ 105 public void setMax(int max) { 106 this.max = max; 107 } 108 109 /** 110 * 设置文本提示信息 111 * 112 * @param text 113 */ 114 public void setText(String text) { 115 this.text = text; 116 } 117 118 /** 119 * 设置进度条的颜色值 120 * 121 * @param color 122 */ 123 public void setForeground(int color) { 124 this.foreground = color; 125 } 126 127 /** 128 * 设置进度条的背景色 129 */ 130 public void setBackgroundColor(int color) { 131 this.backgroundColor = color; 132 } 133 134 /*** 135 * 设置文本的大小 136 */ 137 public void setTextSize(int size) { 138 this.textSize = size; 139 } 140 141 /** 142 * 设置文本的颜色值 143 * 144 * @param color 145 */ 146 public void setTextColor(int color) { 147 this.textColor = color; 148 } 149 150 /** 151 * 设置进度值 152 * 153 * @param progress 154 */ 155 public void setProgress(int progress) { 156 if(progress>max){ 157 return; 158 } 159 this.progress=progress; 160 //设置进度之后,要求UI强制进行重绘 161 postInvalidate(); 162 } 163 164 public int getMax(){ 165 return max; 166 } 167 168 public int getProgress(){ 169 return progress; 170 } 171 172 @SuppressLint("ClickableViewAccessibility") 173 @Override 174 public boolean onTouchEvent(MotionEvent event) { 175 switch (event.getAction()) { 176 case MotionEvent.ACTION_UP: 177 buttonClickListener.onClickListener(); 178 break; 179 default: 180 break; 181 } 182 return true; 183 } 184 185 public void setOnProgressButtonClickListener(OnProgressButtonClickListener clickListener){ 186 buttonClickListener = clickListener; 187 } 188 189 public interface OnProgressButtonClickListener{ 190 public void onClickListener(); 191 } 192
<declare-styleable name="ProgressButton"> <attr name="background" format="color" /> <attr name="foreground" format="color" /> <attr name="textcolor" format="color" /> <attr name="max" /> <attr name="progress" /> <attr name="textSize" /> <attr name="text" format="string" /> </declare-styleable>
193 }
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