Android Open Source - ProgressTextView Progress Text View

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Back to project page ProgressTextView.

License

The source code is released under:

Apache License

Java Source Code

package com.github.yaming.progresstextview;
//from  w w  w  .j a  va2 s. c om
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Typeface;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.view.animation.LinearInterpolator;
import android.widget.TextView;

public class ProgressTextView extends TextView {
  private boolean mShouldStartAnimationDrawable;
  
  @SuppressWarnings("unused")
  private boolean mAttached;
  
  private LinearInterpolator mInterpolator;
  private Animation mAnimation;
  private int animResid;

  public ProgressTextView(Context context) {
    super(context);
    init(context, null, 0);
  }

  public ProgressTextView(Context context, AttributeSet attrs) {
    super(context, attrs);
    init(context, attrs, 0);
  }

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

  private void init(Context context, AttributeSet attrs, int defStyle) {
    if (attrs == null)
      return;
    
    TypedArray a = context.getTheme().obtainStyledAttributes(attrs,
        R.styleable.ProgressTextView, R.attr.font,
        R.style.ProgressTextView);

    try {
      animResid = a.getResourceId(R.styleable.ProgressTextView_anim, R.anim.loading);
      String font = a.getString(R.styleable.ProgressTextView_font);
      if (font != null) {
        Typeface typeface = TypefaceManager.getTypeface(context, font);
        if (typeface != null) {
          this.setTypeface(typeface);
        }
      }
    } finally {
      a.recycle();
    }
  }

  @Override
  protected void onVisibilityChanged(View changedView, int visibility) {
    super.onVisibilityChanged(changedView, visibility);

  }
  
  @Override
  protected void onAttachedToWindow() {
    super.onAttachedToWindow();
    mAttached = true;
    startAnimation();
  }
  
  @Override
  protected void onDetachedFromWindow() {
    super.onDetachedFromWindow();
    mAttached = false;
    stopAnimation();
  }

  @Override
  public void setVisibility(int v) {
    if (getVisibility() != v) {
      super.setVisibility(v);
       if (v == GONE || v == INVISIBLE) {
                 stopAnimation();
             } else {
                 startAnimation();
             }
    }
  }
  
  private void startAnimation(){
    if (getVisibility() != VISIBLE) {
            return;
        }
    
    if (mInterpolator == null) {
            mInterpolator = new LinearInterpolator();
        }
    if(mAnimation == null){
      mAnimation = AnimationUtils.loadAnimation(getContext(), animResid);  
      mAnimation.setInterpolator(mInterpolator);
      setAnimation(mAnimation);
    }else{
      mAnimation.reset();
    }
    mShouldStartAnimationDrawable = true;
  }
  
  private void stopAnimation(){
    mShouldStartAnimationDrawable = false;
    if(mAnimation != null){
      mAnimation.cancel();
    }
  }
  
  @Override
  protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    if(mShouldStartAnimationDrawable){
      mAnimation.start();
      mShouldStartAnimationDrawable = false;
    }
  }
}

Java Source Code List

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