Android SeekBar显示进度在thumb上

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参考：
参考进行了修改

参考网上的一个项目进行了修改，只保留了两个按钮，和一个进度条，可以显示进度到拖动按钮，效果如下：
这里写图片描述

xml布局文件

             <com.tcl.navigator.setting.view.mSeekBar                android:id="@+id/day_light_progress"                android:layout_width="352px"                android:layout_height="wrap_content"                android:layout_toRightOf="@id/btn_screen_brightness_minus"                android:layout_marginLeft="10px"                android:focusable="false"                android:max="15"                android:progressDrawable="@drawable/seekbar_horizonta"                android:paddingLeft="18px"                android:paddingRight="18px"                android:thumbOffset="0px"                android:maxHeight="4px"                android:minHeight="4px" />

SeekBar.java 代码文件

import android.annotation.SuppressLint;import android.content.Context;import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Matrix;import android.graphics.Paint;import android.graphics.PixelFormat;import android.graphics.Rect;import android.graphics.drawable.BitmapDrawable;import android.graphics.drawable.Drawable;import android.util.AttributeSet;import android.widget.SeekBar;public class mSeekBar extends SeekBar {    //比例对应的原点分辨率    private int ScreenWidth = 720;    private int screenHeight = 1280;    private Drawable thumb;    private Resources res;    private Paint paint;    private Bitmap bmp;    private Drawable mThumb;    public mSeekBar(Context context) {        this(context, null);    }    @SuppressWarnings("deprecation")    public mSeekBar(Context context, AttributeSet attrs) {        super(context, attrs);        paint = new Paint();        paint.setTextAlign(Paint.Align.CENTER);        paint.setColor(getResources().getColor(R.color.color_white));        res = context.getResources();        if(Pixels.getpixels_x(100) == 720){            bmp = BitmapFactory.decodeResource(res, R.drawable.seek_thumb);        }else{            bmp = BitmapFactory.decodeResource(res, R.drawable.seek_thumb);        }        thumb = new BitmapDrawable(bmp);       paint.setTextSize(30);        // 设置拖动的图片        setThumb(thumb);        // 图片的位置        setThumbOffset(thumb.getIntrinsicWidth());    }    @Override    public void setThumb(Drawable thumb) {        // TODO Auto-generated method stub        super.setThumb(thumb);        this.mThumb = thumb;    }    public Drawable getSeekBarThumb(){        return mThumb;    }    //设置thumb的偏移数值    @Override    public void setThumbOffset(int thumbOffset) {        // TODO Auto-generated method stub        super.setThumbOffset(thumbOffset/3);    }    String temp_str = "0";    @Override    protected synchronized void onDraw(Canvas canvas) {        // TODO Auto-generated method stub        super.onDraw(canvas);        canvas.save();        int data = Integer.parseInt(temp_str);        Rect rect = getSeekBarThumb().getBounds();        float fontwidth = paint.measureText(temp_str);        if(data < 10){            canvas.drawText(temp_str, rect.left + (rect.width()) /2.0F, rect.top - paint.ascent() + (rect.height() - (paint.descent() - paint.ascent()))/2.0F,  paint);        }else{            canvas.drawText(temp_str, rect.left + (rect.width() ) /2.0F, rect.top - paint.ascent() + (rect.height() - (paint.descent() - paint.ascent()))/2.0F,  paint);            }        canvas.restore();    }    private  Bitmap drawableToBitmap(Drawable drawable) {        // 取 drawable 的长宽        int w = drawable.getIntrinsicWidth();        int h = drawable.getIntrinsicHeight();        // 取 drawable 的颜色格式        Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888                : Bitmap.Config.RGB_565;        // 建立对应 bitmap        Bitmap bitmap = Bitmap.createBitmap(w, h, config);        // 建立对应 bitmap 的画布        Canvas canvas = new Canvas(bitmap);        drawable.setBounds(0, 0, w, h);        // 把 drawable 内容画到画布中        drawable.draw(canvas);        return bitmap;    }    public void SetValue(String value){        StringBuffer sb = new StringBuffer();        sb.append(value);        temp_str = sb.toString();        invalidate();    }    @SuppressLint("NewApi")    @Override    protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        super.onMeasure(widthMeasureSpec, heightMeasureSpec);    }    @Override    public void setOnSeekBarChangeListener(final OnSeekBarChangeListener l) {        super.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {            @Override            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {                if (l != null) {                    l.onProgressChanged(seekBar, progress, fromUser);                }            }            @Override            public void onStartTrackingTouch(SeekBar seekBar) {                if (l != null) {                    l.onStartTrackingTouch(seekBar);                }            }            @Override            public void onStopTrackingTouch(SeekBar seekBar) {                if (l != null) {                    l.onStopTrackingTouch(seekBar);                }            }        });    }}

Pixels.java 代码文件

import android.app.Activity;import android.util.DisplayMetrics;/** * 获得屏幕像素  * @author Administrator * */public class Pixels {    private static int[] px = new int[101];    private static int[] py = new int[101];    private int w,h;    private DisplayMetrics dm;    public Pixels(Activity activity){        dm = new DisplayMetrics();        activity.getWindowManager().getDefaultDisplay().getMetrics(dm);        w = dm.widthPixels;        h = dm.heightPixels;        int length = px.length;        for(int index=0;index<length;index++){            px[index] = (int)(w*0.01*index);            py[index] = (int)(h*0.01*index);        }    }    /**     * 获得x点值     * @param index     * @return     */    public static int getpixels_x(int index){        return px[index];    }    /**     * 获得y点值     * @param index     * @return     */    public static int getpixels_y(int index){        return py[index];    }}

seekbar_horizonta.xml

<?xml version="1.0" encoding="UTF-8"?> <layer-list    xmlns:android="http://schemas.android.com/apk/res/android">      <item android:id="@android:id/background">          <shape>               <corners android:radius="5.0dip" />            <solid android:color="#878278"/>        </shape>      </item>      <item android:id="@android:id/secondaryProgress">          <clip>              <shape>                   <corners android:radius="5.0dip" />                <solid android:color="#878278" />            </shape>          </clip>      </item>      <item android:id="@android:id/progress">          <clip>              <shape>                   <corners android:radius="5.0dip" />                <solid android:color="#878278" />             </shape>          </clip>      </item>  </layer-list>

调用代码文件

        private mSeekBar dayLightProgress        dayLightProgress.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {            @Override            public void onStopTrackingTouch(SeekBar arg0) {                // TODO Auto-generated method stub            }            @Override            public void onStartTrackingTouch(SeekBar arg0) {                // TODO Auto-generated method stub            }            @Override            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {                // TODO Auto-generated method stub                dayLightProgress.SetValue(progress+"");            }        });

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