Android自定义TextView实现文字倾斜效果

public class LeanTextView extends TextView {
  public int getmDegrees() {
    return mDegrees;
  }

  public void setmDegrees(int mDegrees) {
    this.mDegrees = mDegrees;
    invalidate();
  }

  private int mDegrees;

  public LeanTextView(Context context) {
    super(context, null);
  }

  public LeanTextView(Context context, AttributeSet attrs) {
    super(context, attrs, android.R.attr.textViewStyle);
    this.setGravity(Gravity.CENTER);
    TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.LeanTextView);
    mDegrees = a.getDimensionPixelSize(R.styleable.LeanTextView_degree, 0);
    a.recycle();
  }

  @Override
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    setMeasuredDimension(getMeasuredWidth(), getMeasuredWidth());
  }

  @Override
  protected void onDraw(Canvas canvas) {
    canvas.save();
    canvas.translate(getCompoundPaddingLeft(), getExtendedPaddingTop());
    canvas.rotate(mDegrees, this.getWidth() / 2f, this.getHeight() / 2f);
    super.onDraw(canvas);
    canvas.restore();
  }
}

<&＃63;xml version="1.0" encoding="utf-8"&＃63;>

  
    
  

    mText= (LeanTextView) findViewById (R.id.lean);
    degrees= (TextView) findViewById (R.id.degrees);
    SeekBar sbLean = (SeekBar) findViewById(R.id.sb_lean);
    sbLean.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
      @Override
      public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
        mText.setmDegrees(progress);
        degrees.setText("倾斜度："+progress);
      }

      @Override
      public void onStartTrackingTouch(SeekBar seekBar) {

      }

      @Override
      public void onStopTrackingTouch(SeekBar seekBar) {

      }
    });