Android Open Source - AudioPlayerRecorder Audio Player Layout

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Back to project page AudioPlayerRecorder.
License

The source code is released under:
MIT License
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Java Source Code

package com.heavyplayer.audioplayerrecorder.widget;
/*  w w  w . j  a v a2 s.  c o  m*/
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.AttributeSet;
import android.util.SparseArray;
import android.view.View;
import android.view.ViewGroup;
import android.widget.SeekBar;
import android.widget.TextView;
import com.heavyplayer.audioplayerrecorder.R;
import com.heavyplayer.audioplayerrecorder.widget.interface_.OnDetachListener;

public class AudioPlayerLayout extends ViewGroup {
  private static final int SECOND_MILLIS = 1000;
  private static final int MINUTE_MILLIS = 60 * SECOND_MILLIS;
  private static final int HOUR_MILLIS = 60 * MINUTE_MILLIS;

  public OnDetachListener mOnDetachListener;

  private PlayPauseImageButton mButton;
  private SeekBar mSeekBar;
  private TextView mTimeCurrentPositionTextView;
  private TextView mTimeDurationTextView;

  // Attributes.
  private Integer mPlayResId;
  private Integer mPauseResId;
  private Integer mButtonWidth;
  private Integer mButtonHeight;
  private Integer mButtonBackgroundResId;
  private Integer mSeekBarMarginLeft;
  private Integer mSeekBarMarginRight;
  private ColorStateList mTimeCurrentPositionColor;
  private ColorStateList mTimeDurationColor;
  private Integer mMaxWidth;

  // Time variables.
  private int mTimeCurrentPosition = -1;
  private int mTimeDuration = -1;

  private boolean mIsPlaying = false;

  public AudioPlayerLayout(Context context) {
    super(context);
    init(context, null);
  }

  public AudioPlayerLayout(Context context, AttributeSet attrs) {
    super(context, attrs);
    init(context, attrs);
  }

  public AudioPlayerLayout(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    init(context, attrs);
  }

  private void init(Context context, AttributeSet attrs) {
    setDescendantFocusability(FOCUS_BLOCK_DESCENDANTS); // Enhance compatibility with ListView.

    if(attrs != null) {
      final TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.AudioPlayerLayout);
      if(ta != null) {
        try {
          mPlayResId = getResourceId(ta, R.styleable.AudioPlayerLayout_playSrc);
          mPauseResId = getResourceId(ta, R.styleable.AudioPlayerLayout_pauseSrc);
          mButtonWidth = getDimensionPixelSize(ta, R.styleable.AudioPlayerLayout_buttonWidth);
          mButtonHeight = getDimensionPixelSize(ta, R.styleable.AudioPlayerLayout_buttonHeight);
          mButtonBackgroundResId = getResourceId(ta, R.styleable.AudioPlayerLayout_buttonBackground);
          mSeekBarMarginLeft = getDimensionPixelSize(ta, R.styleable.AudioPlayerLayout_seekBarMarginLeft);
          mSeekBarMarginRight = getDimensionPixelSize(ta, R.styleable.AudioPlayerLayout_seekBarMarginRight);
          mTimeCurrentPositionColor = getColorStateList(ta, R.styleable.AudioPlayerLayout_timeCurrentPositionColor);
          mTimeDurationColor = getColorStateList(ta, R.styleable.AudioPlayerLayout_timeDurationColor);
          mMaxWidth = getDimensionPixelSize(ta, R.styleable.AudioPlayerLayout_android_maxWidth);
        } finally {
          ta.recycle();
        }
      }
    }
  }

  private Integer getResourceId(TypedArray ta, int index) {
    return ta.hasValue(index) ? ta.getResourceId(index, 0) : null;
  }

  private Integer getDimensionPixelSize(TypedArray ta, int index) {
    return ta.hasValue(index) ? ta.getDimensionPixelSize(index, 0) : null;
  }

  private ColorStateList getColorStateList(TypedArray ta, int index) {
    return ta.hasValue(index) ? ta.getColorStateList(index) : null;
  }

  @Override
  public void addView(View child, int index, LayoutParams params) {
    final int id = child.getId();
    switch(id) {
      case android.R.id.button1:
        if(!(child instanceof PlayPauseImageButton))
          throw new IllegalStateException("View with id android.R.id.button1 must extend PlayPauseImageButton.");
        mButton = (PlayPauseImageButton)child;

        if(mButtonWidth != null || mButtonHeight != null) {
          if(params == null)
            params = new LayoutParams(
                mButtonWidth != null ? mButtonWidth : LayoutParams.WRAP_CONTENT,
                mButtonHeight!= null ? mButtonHeight : LayoutParams.WRAP_CONTENT);
          else {
            if(mButtonWidth != null)
              params.width = mButtonWidth;
            if(mButtonHeight != null)
              params.height = mButtonHeight;
          }
        }

        // Configure button.
        if(mPlayResId != null)
          mButton.setPlayDrawableResource(mPlayResId);
        if(mPauseResId != null)
          mButton.setPauseDrawableResource(mPauseResId);
        if(mButtonBackgroundResId != null) {
          mButton.setPadding(0, 0, 0, 0); // Remove image button padding, before setting the background.
          mButton.setBackgroundResource(mButtonBackgroundResId);
        }

        break;

      case android.R.id.progress:
        if(!(child instanceof SeekBar))
          throw new IllegalStateException("View with id android.R.id.progress must extend SeekBar.");
        mSeekBar = (SeekBar)child;

        // Configure seek bar layout params.
        if(!(params instanceof MarginLayoutParams)) {
          params = params == null ?
              new MarginLayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT) :
              new MarginLayoutParams(params);
        }
        if(mSeekBarMarginLeft != null)
          ((MarginLayoutParams)params).leftMargin = mSeekBarMarginLeft;
        if(mSeekBarMarginRight != null)
          ((MarginLayoutParams)params).rightMargin = mSeekBarMarginRight;

        break;

      case android.R.id.text1:
        if(!(child instanceof TextView))
          throw new IllegalStateException("View with android.R.id.text1 must extend TextView.");
        mTimeCurrentPositionTextView = (TextView)child;
        mTimeCurrentPositionTextView.setIncludeFontPadding(false);
        if(mTimeCurrentPositionColor != null)
          mTimeCurrentPositionTextView.setTextColor(mTimeCurrentPositionColor);
        break;

      case android.R.id.text2:
        if(!(child instanceof TextView))
          throw new IllegalStateException("View with android.R.id.text2 must extend TextView.");
        mTimeDurationTextView = (TextView)child;
        mTimeDurationTextView.setIncludeFontPadding(false);
        if(mTimeDurationColor != null)
          mTimeDurationTextView.setTextColor(mTimeDurationColor);
        break;

      default:
        break;
    }

    super.addView(child, index, params);
  }

  @Override
  protected void onFinishInflate() {
    final Context context = getContext();

    if(context != null) {
      if(findViewById(android.R.id.button1) == null) {
        final PlayPauseImageButton button = new PlayPauseImageButton(context);
        button.setId(android.R.id.button1);
        addView(button);
      }

      if(findViewById(android.R.id.progress) == null) {
        final SeekBar seekBar = new SeekBar(context);
        seekBar.setId(android.R.id.progress);


        final MarginLayoutParams seekBarParams =
            new MarginLayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
        final Resources resources = getResources();
        // Default margins.
        if(resources != null) {
          seekBarParams.leftMargin = resources.getDimensionPixelSize(R.dimen.apl_seek_bar_margin_left);
          seekBarParams.rightMargin = resources.getDimensionPixelSize(R.dimen.apl_seek_bar_margin_right);
        }

        addView(seekBar, seekBarParams);
      }

      if(findViewById(android.R.id.text1) == null) {
        final TextView currentPositionTextView = new TextView(context);
        currentPositionTextView.setId(android.R.id.text1);
        addView(currentPositionTextView);
      }

      if(findViewById(android.R.id.text2) == null) {
        final TextView durationTextView = new TextView(context);
        durationTextView.setId(android.R.id.text2);
        addView(durationTextView);
      }
    }

    // Init time.
    setTimeDuration(0);
    setTimeCurrentPosition(0);

    super.onFinishInflate();
  }

  public PlayPauseImageButton getButton() {
    return mButton;
  }

  public SeekBar getSeekBar() {
    return mSeekBar;
  }

  @Override
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    // Measure button.
    measureChild(mButton, widthMeasureSpec, heightMeasureSpec);

    // Measure current position text view.
    measureChild(mTimeCurrentPositionTextView, widthMeasureSpec, heightMeasureSpec);

    // Measure duration text view.
    measureChild(mTimeDurationTextView, widthMeasureSpec, heightMeasureSpec);

    // Measure seek bar.
    final int availableWidth = mMaxWidth != null ?
        Math.min(mMaxWidth, MeasureSpec.getSize(widthMeasureSpec)) :
        MeasureSpec.getSize(widthMeasureSpec);

    final int remainingWidth =
        availableWidth -
        mButton.getMeasuredWidth() -
        mTimeCurrentPositionTextView.getMeasuredWidth() -
        mTimeDurationTextView.getMeasuredWidth();

    final int seekBarWidth = Math.max(remainingWidth, 0);
    final int seekBarWidthMeasureSpec = MeasureSpec.makeMeasureSpec(seekBarWidth, MeasureSpec.EXACTLY);
    measureChildWithMargins(mSeekBar, seekBarWidthMeasureSpec, 0, heightMeasureSpec, 0);


    // Calculate max width and height, taking padding into account.

    final int measuredWidth =
        mButton.getMeasuredWidth() +
        mSeekBar.getMeasuredWidth() +
        mTimeCurrentPositionTextView.getMeasuredWidth() +
        mTimeDurationTextView.getMeasuredWidth() +
        getPaddingLeft() + getPaddingRight();

    final int measuredHeight =
        Math.max(
          Math.max(mButton.getMeasuredHeight(), mSeekBar.getMeasuredHeight()),
          Math.max(mTimeCurrentPositionTextView.getMeasuredHeight(), mTimeDurationTextView.getMeasuredHeight())) +
        getPaddingTop() + getPaddingBottom();


    // Resolve width and height.

    final int width = mMaxWidth != null ?
        Math.min(mMaxWidth, resolveSize(measuredWidth, widthMeasureSpec)) :
        resolveSize(measuredWidth, widthMeasureSpec);

    final int height = resolveSize(measuredHeight, heightMeasureSpec);

    setMeasuredDimension(width, height);
  }

  @Override
  protected void onLayout(boolean changed, int l, int t, int r, int b) {
    // Layout button.
    int left = getPaddingLeft();
    layoutChild(mButton, left, t, b);

    // Layout seek bar.
    final MarginLayoutParams seekBarParams = (MarginLayoutParams)mSeekBar.getLayoutParams();
    final int seekBarMarginLeft = seekBarParams != null ? seekBarParams.leftMargin : 0;
    final int seekBarMarginRight = seekBarParams != null ? seekBarParams.rightMargin : 0;
    left += mButton.getMeasuredWidth() + seekBarMarginLeft;
    layoutChild(mSeekBar, left, t, b);

    // Layout current position text view.
    left += mSeekBar.getMeasuredWidth() + seekBarMarginRight;
    layoutChild(mTimeCurrentPositionTextView, left, t, b);

    // Layout current position text view.
    left += mTimeCurrentPositionTextView.getMeasuredWidth();
    layoutChild(mTimeDurationTextView, left, t, b);
  }

  protected void layoutChild(View child, int l, int t, int b) {
    final int height = b - t;
    final int measuredHeight = child.getMeasuredHeight();
    final int nt = (int)((height - measuredHeight) / 2 + .5f);
    child.layout(l, nt, l + child.getMeasuredWidth(), nt + measuredHeight);
  }

  public void setTimeCurrentPosition(int currentPosition) {
    if(mTimeCurrentPosition != currentPosition) {
      mTimeCurrentPosition = currentPosition;

      if(mTimeCurrentPositionTextView != null)
        mTimeCurrentPositionTextView.setText(millisToTimeString(mTimeCurrentPosition));
    }
  }

  public void setTimeDuration(int duration) {
    if(mTimeDuration != duration) {
      // Update length current position if it needs to include or exclude hours
      // depending on the duration.
      final boolean updateCurrentPosition = hasHours(mTimeDuration) != hasHours(duration);

      // Update time duration before updating current position.
      // It is used to include or exclude hours.
      mTimeDuration = duration;

      if(updateCurrentPosition)
        setTimeCurrentPosition(mTimeCurrentPosition);

      if(mTimeDurationTextView != null)
        mTimeDurationTextView.setText(String.format(" / %s", millisToTimeString(mTimeDuration)));
    }
  }

  private String millisToTimeString(long millis) {
    final long seconds = (millis / SECOND_MILLIS) % 60 ;
    final long minutes = ((millis / MINUTE_MILLIS) % 60);
    final long hours = ((millis / HOUR_MILLIS) % 24);

    return hasHours(mTimeDuration) ?
        String.format("%02d:%02d:%02d", hours, minutes, seconds) :
        String.format("%02d:%02d", minutes, seconds);
  }

  public void setIsPlaying(boolean isPlaying) {
    if(mIsPlaying != isPlaying) {
      mIsPlaying = isPlaying;

      if(mTimeCurrentPositionTextView != null)
        mTimeCurrentPositionTextView.setSelected(isPlaying);

      if(mTimeDurationTextView != null)
        mTimeDurationTextView.setSelected(isPlaying);
    }
  }

  private boolean hasHours(long millis) {
    return millis >= HOUR_MILLIS;
  }

  @Override
  protected void onDetachedFromWindow() {
    super.onDetachedFromWindow();

    if(mOnDetachListener != null)
      mOnDetachListener.onDetachedFromWindow(this);
  }

  @Override
  public void onStartTemporaryDetach() {
    super.onStartTemporaryDetach();

    if(mOnDetachListener != null)
      mOnDetachListener.onStartTemporaryDetach(this);
  }

  public void setOnDetachListener(OnDetachListener listener) {
    mOnDetachListener = listener;
  }

  @Override
  protected void dispatchSaveInstanceState(SparseArray container) {
    super.dispatchFreezeSelfOnly(container);
  }

  @Override
  protected void dispatchRestoreInstanceState(SparseArray container) {
    super.dispatchThawSelfOnly(container);
  }

  @Override
  protected Parcelable onSaveInstanceState() {
    final SavedState ss = new SavedState(super.onSaveInstanceState());
    ss.buttonSavedState = mButton.onSaveInstanceState();
    ss.seekBarSavedState = mSeekBar.onSaveInstanceState();
    ss.timeCurrentPosition = mTimeCurrentPosition;
    ss.timeDuration = mTimeDuration;
    ss.isPlaying = mIsPlaying;
    return ss;
  }

  @Override
  protected void onRestoreInstanceState(Parcelable state) {
    if(!(state instanceof SavedState)) {
      super.onRestoreInstanceState(state);
      return;
    }

    final SavedState ss = (SavedState)state;
    super.onRestoreInstanceState(ss.getSuperState());
    mButton.onRestoreInstanceState(ss.buttonSavedState);
    mSeekBar.onRestoreInstanceState(ss.seekBarSavedState);
    // Update time.
    setTimeDuration(ss.timeDuration);
    setTimeCurrentPosition(ss.timeCurrentPosition);
    setIsPlaying(ss.isPlaying);
  }

  static class SavedState extends BaseSavedState {
    Parcelable buttonSavedState;
    Parcelable seekBarSavedState;
    int timeCurrentPosition;
    int timeDuration;
    boolean isPlaying;

    public SavedState(Parcel source) {
      super(source);
      buttonSavedState = source.readParcelable(SavedState.class.getClassLoader());
      seekBarSavedState = source.readParcelable(SavedState.class.getClassLoader());
      timeCurrentPosition = source.readInt();
      timeDuration = source.readInt();
      isPlaying = source.readInt() == 1;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
      super.writeToParcel(dest, flags);
      dest.writeParcelable(buttonSavedState, 0);
      dest.writeParcelable(seekBarSavedState, 0);
      dest.writeInt(timeCurrentPosition);
      dest.writeInt(timeDuration);
      dest.writeInt(isPlaying ? 1 : 0);
    }

    public SavedState(Parcelable superState) {
      super(superState);
    }

    public final static Parcelable.Creator<SavedState> CREATOR = new Parcelable.Creator<SavedState>() {
      @Override
      public SavedState createFromParcel(Parcel source) {
        return new SavedState(source);
      }

      @Override
      public SavedState[] newArray(int size) {
        return new SavedState[size];
      }
    };
  }
}
Java Source Code List
