本文实例为大家分享了谷歌风格ProgressBar的具体代码，供大家参考，具体内容如下

具体代码

package zms.demo.colorprogress;

import android.content.Context;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.Interpolator;
import android.view.animation.LinearInterpolator;
import android.widget.ProgressBar;

public class GoogleProgressBar extends ProgressBar {

  private static final int INTERPOLATOR_ACCELERATE = 0;
  private static final int INTERPOLATOR_LINEAR = 1;
  private static final int INTERPOLATOR_ACCELERATEDECELERATE = 2;
  private static final int INTERPOLATOR_DECELERATE = 3;

  public GoogleProgressBar(Context context) {
    this(context, null);
  }

  public GoogleProgressBar(Context context, AttributeSet attrs) {
    this(context, attrs, R.attr.googleProgressStyle);
  }

  public GoogleProgressBar(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);

    if (isInEditMode()) {
      setIndeterminateDrawable(new GoogleProgressDrawable.Builder(
          context, true).build());
      return;
    }

    Resources res = context.getResources();
    TypedArray a = context.obtainStyledAttributes(attrs,
        R.styleable.GoogleStyleProgressBar, defStyle, 0);

    final int color = a.getColor(R.styleable.GoogleStyleProgressBar_color,
        res.getColor(R.color.default_color));
    final int sectionsCount = a.getInteger(
        R.styleable.GoogleStyleProgressBar_sections_count,
        res.getInteger(R.integer.default_sections_count));
    final int separatorLength = a
        .getDimensionPixelSize(
            R.styleable.GoogleStyleProgressBar_stroke_separator_length,
            res.getDimensionPixelSize(R.dimen.default_stroke_separator_length));
    final float strokeWidth = a.getDimension(
        R.styleable.GoogleStyleProgressBar_stroke_width,
        res.getDimension(R.dimen.default_stroke_width));
    final float speed = a.getFloat(
        R.styleable.GoogleStyleProgressBar_speed,
        Float.parseFloat(res.getString(R.string.default_speed)));
    final float speedProgressiveStart = a.getFloat(
        R.styleable.GoogleStyleProgressBar_progressiveStart_speed,
        speed);
    final float speedProgressiveStop = a
        .getFloat(
            R.styleable.GoogleStyleProgressBar_progressiveStop_speed,
            speed);
    final int iInterpolator = a.getInteger(
        R.styleable.GoogleStyleProgressBar_interpolator, -1);
    final boolean reversed = a.getBoolean(
        R.styleable.GoogleStyleProgressBar_reversed,
        res.getBoolean(R.bool.default_reversed));
    final boolean mirrorMode = a.getBoolean(
        R.styleable.GoogleStyleProgressBar_mirror_mode,
        res.getBoolean(R.bool.default_mirror_mode));
    final int colorsId = a.getResourceId(
        R.styleable.GoogleStyleProgressBar_colors, 0);
    final boolean progressiveStartActivated = a.getBoolean(
        R.styleable.GoogleStyleProgressBar_progressiveStart_activated,
        res.getBoolean(R.bool.default_progressiveStart_activated));
    final Drawable backgroundDrawable = a
        .getDrawable(R.styleable.GoogleStyleProgressBar_background);
    final boolean generateBackgroundWithColors = a
        .getBoolean(
            R.styleable.GoogleStyleProgressBar_generate_background_with_colors,
            false);
    final boolean gradients = a.getBoolean(
        R.styleable.GoogleStyleProgressBar_gradients, false);
    a.recycle();

    // interpolator
    Interpolator interpolator = null;
    if (iInterpolator == -1) {
      interpolator = getInterpolator();
    }
    if (interpolator == null) {
      switch (iInterpolator) {
      case INTERPOLATOR_ACCELERATEDECELERATE:
        interpolator = new AccelerateDecelerateInterpolator();
        break;
      case INTERPOLATOR_DECELERATE:
        interpolator = new DecelerateInterpolator();
        break;
      case INTERPOLATOR_LINEAR:
        interpolator = new LinearInterpolator();
        break;
      case INTERPOLATOR_ACCELERATE:
      default:
        interpolator = new AccelerateInterpolator();
      }
    }

    int[] colors = null;
    // colors
    if (colorsId != 0) {
      colors = res.getIntArray(colorsId);
    }

    GoogleProgressDrawable.Builder builder = new GoogleProgressDrawable.Builder(
        context).speed(speed)
        .progressiveStartSpeed(speedProgressiveStart)
        .progressiveStopSpeed(speedProgressiveStop)
        .interpolator(interpolator).sectionsCount(sectionsCount)
        .separatorLength(separatorLength).strokeWidth(strokeWidth)
        .reversed(reversed).mirrorMode(mirrorMode)
        .progressiveStart(progressiveStartActivated)
        .gradients(gradients);

    if (backgroundDrawable != null) {
      builder.backgroundDrawable(backgroundDrawable);
    }

    if (generateBackgroundWithColors) {
      builder.generateBackgroundUsingColors();
    }

    if (colors != null && colors.length > 0)
      builder.colors(colors);
    else
      builder.color(color);

    GoogleProgressDrawable d = builder.build();
    setIndeterminateDrawable(d);
  }

  public void applyStyle(int styleResId) {
    TypedArray a = getContext().obtainStyledAttributes(null,
        R.styleable.GoogleStyleProgressBar, 0, styleResId);

    if (a.hasValue(R.styleable.GoogleStyleProgressBar_color)) {
      setSmoothProgressDrawableColor(a.getColor(
          R.styleable.GoogleStyleProgressBar_color, 0));
    }
    if (a.hasValue(R.styleable.GoogleStyleProgressBar_colors)) {
      int colorsId = a.getResourceId(
          R.styleable.GoogleStyleProgressBar_colors, 0);
      if (colorsId != 0) {
        int[] colors = getResources().getIntArray(colorsId);
        if (colors != null && colors.length > 0)
          setSmoothProgressDrawableColors(colors);
      }
    }
    if (a.hasValue(R.styleable.GoogleStyleProgressBar_sections_count)) {
      setSmoothProgressDrawableSectionsCount(a.getInteger(
          R.styleable.GoogleStyleProgressBar_sections_count, 0));
    }
    if (a.hasValue(R.styleable.GoogleStyleProgressBar_stroke_separator_length)) {
      setSmoothProgressDrawableSeparatorLength(a.getDimensionPixelSize(
          R.styleable.GoogleStyleProgressBar_stroke_separator_length,
          0));
    }
    if (a.hasValue(R.styleable.GoogleStyleProgressBar_stroke_width)) {
      setSmoothProgressDrawableStrokeWidth(a.getDimension(
          R.styleable.GoogleStyleProgressBar_stroke_width, 0));
    }
    if (a.hasValue(R.styleable.GoogleStyleProgressBar_speed)) {
      setSmoothProgressDrawableSpeed(a.getFloat(
          R.styleable.GoogleStyleProgressBar_speed, 0));
    }
    if (a.hasValue(R.styleable.GoogleStyleProgressBar_progressiveStart_speed)) {
      setSmoothProgressDrawableProgressiveStartSpeed(a.getFloat(
          R.styleable.GoogleStyleProgressBar_progressiveStart_speed,
          0));
    }
    if (a.hasValue(R.styleable.GoogleStyleProgressBar_progressiveStop_speed)) {
      setSmoothProgressDrawableProgressiveStopSpeed(a
          .getFloat(
              R.styleable.GoogleStyleProgressBar_progressiveStop_speed,
              0));
    }
    if (a.hasValue(R.styleable.GoogleStyleProgressBar_reversed)) {
      setSmoothProgressDrawableReversed(a.getBoolean(
          R.styleable.GoogleStyleProgressBar_reversed, false));
    }
    if (a.hasValue(R.styleable.GoogleStyleProgressBar_mirror_mode)) {
      setSmoothProgressDrawableMirrorMode(a.getBoolean(
          R.styleable.GoogleStyleProgressBar_mirror_mode, false));
    }
    if (a.hasValue(R.styleable.GoogleStyleProgressBar_progressiveStart_activated)) {
      setProgressiveStartActivated(a
          .getBoolean(
              R.styleable.GoogleStyleProgressBar_progressiveStart_activated,
              false));
    }
    if (a.hasValue(R.styleable.GoogleStyleProgressBar_progressiveStart_activated)) {
      setProgressiveStartActivated(a
          .getBoolean(
              R.styleable.GoogleStyleProgressBar_progressiveStart_activated,
              false));
    }
    if (a.hasValue(R.styleable.GoogleStyleProgressBar_gradients)) {
      setSmoothProgressDrawableUseGradients(a.getBoolean(
          R.styleable.GoogleStyleProgressBar_gradients, false));
    }
    if (a.hasValue(R.styleable.GoogleStyleProgressBar_generate_background_with_colors)) {
      if (a.getBoolean(
          R.styleable.GoogleStyleProgressBar_generate_background_with_colors,
          false)) {
        setSmoothProgressDrawableBackgroundDrawable(GoogleProgressBarUtils
            .generateDrawableWithColors(
                checkIndeterminateDrawable().getColors(),
                checkIndeterminateDrawable().getStrokeWidth()));
      }
    }
    if (a.hasValue(R.styleable.GoogleStyleProgressBar_interpolator)) {
      int iInterpolator = a.getInteger(
          R.styleable.GoogleStyleProgressBar_interpolator, -1);
      Interpolator interpolator;
      switch (iInterpolator) {
      case INTERPOLATOR_ACCELERATEDECELERATE:
        interpolator = new AccelerateDecelerateInterpolator();
        break;
      case INTERPOLATOR_DECELERATE:
        interpolator = new DecelerateInterpolator();
        break;
      case INTERPOLATOR_LINEAR:
        interpolator = new LinearInterpolator();
        break;
      case INTERPOLATOR_ACCELERATE:
        interpolator = new AccelerateInterpolator();
        break;
      default:
        interpolator = null;
      }
      if (interpolator != null) {
        setInterpolator(interpolator);
      }
    }
    a.recycle();
  }

  @Override
  protected synchronized void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    if (isIndeterminate()
        && getIndeterminateDrawable() instanceof GoogleProgressDrawable
        && !((GoogleProgressDrawable) getIndeterminateDrawable())
            .isRunning()) {
      getIndeterminateDrawable().draw(canvas);
    }
  }

  private GoogleProgressDrawable checkIndeterminateDrawable() {
    Drawable ret = getIndeterminateDrawable();
    if (ret == null || !(ret instanceof GoogleProgressDrawable))
      throw new RuntimeException(
          "The drawable is not a SmoothProgressDrawable");
    return (GoogleProgressDrawable) ret;
  }

  @Override
  public void setInterpolator(Interpolator interpolator) {
    super.setInterpolator(interpolator);
    Drawable ret = getIndeterminateDrawable();
    if (ret != null && (ret instanceof GoogleProgressDrawable))
      ((GoogleProgressDrawable) ret).setInterpolator(interpolator);
  }

  public void setSmoothProgressDrawableInterpolator(Interpolator interpolator) {
    checkIndeterminateDrawable().setInterpolator(interpolator);
  }

  public void setSmoothProgressDrawableColors(int[] colors) {
    checkIndeterminateDrawable().setColors(colors);
  }

  public void setSmoothProgressDrawableColor(int color) {
    checkIndeterminateDrawable().setColor(color);
  }

  public void setSmoothProgressDrawableSpeed(float speed) {
    checkIndeterminateDrawable().setSpeed(speed);
  }

  public void setSmoothProgressDrawableProgressiveStartSpeed(float speed) {
    checkIndeterminateDrawable().setProgressiveStartSpeed(speed);
  }

  public void setSmoothProgressDrawableProgressiveStopSpeed(float speed) {
    checkIndeterminateDrawable().setProgressiveStopSpeed(speed);
  }

  public void setSmoothProgressDrawableSectionsCount(int sectionsCount) {
    checkIndeterminateDrawable().setSectionsCount(sectionsCount);
  }

  public void setSmoothProgressDrawableSeparatorLength(int separatorLength) {
    checkIndeterminateDrawable().setSeparatorLength(separatorLength);
  }

  public void setSmoothProgressDrawableStrokeWidth(float strokeWidth) {
    checkIndeterminateDrawable().setStrokeWidth(strokeWidth);
  }

  public void setSmoothProgressDrawableReversed(boolean reversed) {
    checkIndeterminateDrawable().setReversed(reversed);
  }

  public void setSmoothProgressDrawableMirrorMode(boolean mirrorMode) {
    checkIndeterminateDrawable().setMirrorMode(mirrorMode);
  }

  public void setProgressiveStartActivated(boolean progressiveStartActivated) {
    checkIndeterminateDrawable().setProgressiveStartActivated(
        progressiveStartActivated);
  }

  public void setSmoothProgressDrawableCallbacks(
      GoogleProgressDrawable.Callbacks listener) {
    checkIndeterminateDrawable().setCallbacks(listener);
  }

  public void setSmoothProgressDrawableBackgroundDrawable(Drawable drawable) {
    checkIndeterminateDrawable().setBackgroundDrawable(drawable);
  }

  public void setSmoothProgressDrawableUseGradients(boolean useGradients) {
    checkIndeterminateDrawable().setUseGradients(useGradients);
  }

  public void progressiveStart() {
    checkIndeterminateDrawable().progressiveStart();
  }

  public void progressiveStop() {
    checkIndeterminateDrawable().progressiveStop();
  }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。

# Android  # ProgressBar  # Android自定义View 使用PathMeasure简单模仿系统ProgressBar（四）  # Android编程实现自定义ProgressBar样式示例(背景色及一级、二级进度条颜色)  # Android三种方式实现ProgressBar自定义圆形进度条  # Android编程ProgressBar自定义样式之动画模式实现方法  # android ListView和ProgressBar(进度条控件)的使用方法  # Android ProgressBar进度条和ProgressDialog进度框的展示DEMO  # Android ProgressBar进度条使用详解  # Android编程之自定义ProgressBar示例  # 大家分享  # 具体内容  # 大家多多  # styleable  # GoogleStyleProgressBar  # color  # return  # getResources  # obtainStyledAttributes  # sectionsCount  # getInteger  # GoogleStyleProgressBar_sections_count  # getColor  # GoogleStyleProgressBar_color  # default_color  # googleProgressStyle  # defStyle  # super  # null  # attrs 

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