Android Open Source - AudioPlayerRecorder Play Pause Image Button

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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;
//www  .j a  v  a  2s . c  om
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ImageButton;
import com.heavyplayer.audioplayerrecorder.R;

public class PlayPauseImageButton extends ImageButton implements View.OnClickListener {
  private boolean mIsPlaying;

  private int mPlayResId;
  private int mPauseResId;

  private Drawable mPlayDrawable;
  private Drawable mPauseDrawable;

  private OnClickListener mOnClickListener;
  private OnPlayPauseListener mOnPlayPauseListener;

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

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

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

  private void init(Context context, AttributeSet attrs) {
    mIsPlaying = false;

    mPlayResId = R.drawable.ic_av_play;
    mPauseResId = R.drawable.ic_av_pause;

    if(attrs != null) {
      final TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.PlayPauseImageButton);
      if(ta != null) {
        try {
          mPlayResId = ta.getResourceId(R.styleable.PlayPauseImageButton_playSrc, mPlayResId);
          mPauseResId = ta.getResourceId(R.styleable.PlayPauseImageButton_pauseSrc, mPauseResId);
        } finally {
          ta.recycle();
        }
      }
    }

    super.setOnClickListener(this);

    updateDrawable();
  }

  public void setPlayDrawableResource(int resId) {
    mPlayResId = resId;
    mPlayDrawable = null;
    updateDrawable();
  }

  public void setPauseDrawableResource(int resId) {
    mPauseResId = resId;
    mPauseDrawable = null;
    updateDrawable();
  }

  public void setIsPlaying(boolean isPlaying) {
    mIsPlaying = isPlaying;
    updateDrawable();
  }

  @Override
  public void onClick(View v) {
    if(mOnClickListener != null)
      mOnClickListener.onClick(v);

    if(mOnPlayPauseListener != null) {
      if(mIsPlaying)
        mOnPlayPauseListener.onPause(this);
      else
        mOnPlayPauseListener.onPlay(this);
    }

    mIsPlaying = !mIsPlaying;
    updateDrawable();
  }

  private void updateDrawable() {
    final Drawable drawable;

    if(mIsPlaying) {
      if(mPauseDrawable == null && getResources() != null)
        mPauseDrawable = getResources().getDrawable(mPauseResId);
      drawable = mPauseDrawable;
    }
    else {
      if(mPlayDrawable == null && getResources() != null)
        mPlayDrawable = getResources().getDrawable(mPlayResId);
      drawable = mPlayDrawable;
    }

    if(drawable != null && drawable != getDrawable())
      setImageDrawable(drawable);
  }

  @Override
  public void setOnClickListener(OnClickListener l) {
    mOnClickListener = l;
  }

  public void setOnPlayPauseListener(OnPlayPauseListener l) {
    mOnPlayPauseListener = l;
  }

  @Override
  protected Parcelable onSaveInstanceState() {
    final SavedState ss = new SavedState(super.onSaveInstanceState());
    ss.isPlaying = mIsPlaying;
    ss.playResId = mPlayResId;
    ss.pauseResId = mPauseResId;
    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());
    mIsPlaying = ss.isPlaying;
    mPlayResId = ss.playResId;
    mPauseResId = ss.pauseResId;

    updateDrawable();
  }

  static class SavedState extends BaseSavedState {
    boolean isPlaying;
    int playResId;
    int pauseResId;

    public SavedState(Parcel source) {
      super(source);
      isPlaying = source.readInt() == 1;
      playResId = source.readInt();
      pauseResId = source.readInt();
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
      super.writeToParcel(dest, flags);
      dest.writeInt(isPlaying ? 1 : 0);
      dest.writeInt(playResId);
      dest.writeInt(pauseResId);
    }

    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];
      }
    };
  }

  public static interface OnPlayPauseListener {
    public void onPlay(View v);
    public void onPause(View v);
  }
}
Java Source Code List
