Android仿支付宝密码输入框效果

private MyInputPwdUtil myInputPwdUtil;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myInputPwdUtil = new MyInputPwdUtil(this);
myInputPwdUtil.getMyInputDialogBuilder().setAnimStyle(R.style.dialog_anim);//可以定制自己进入退出动画，不设置没有动画
myInputPwdUtil.setListener(new InputPwdView.InputPwdListener() {
@Override
public void hide() {
myInputPwdUtil.hide();
}
@Override
public void forgetPwd() {
Toast.makeText(MainActivity.this, "忘记密码", Toast.LENGTH_SHORT).show();
}
@Override
public void finishPwd(String pwd) {
Toast.makeText(MainActivity.this, pwd, Toast.LENGTH_SHORT).show();
}
});
}
public void show(View view){
myInputPwdUtil.show();
}

int height = getHeight();
int width = getWidth();
//画边框
RectF rect = new RectF(0, 0, width, height);
borderPaint.setColor(borderColor);
canvas.drawRoundRect(rect, borderRadius, borderRadius, borderPaint);
//画内容区域
RectF rectCOntent= new RectF(rect.left + defaultContentMargin, rect.top + defaultContentMargin, rect.right - defaultContentMargin, rect.bottom - defaultContentMargin);
borderPaint.setColor(getResources().getColor(R.color.myInputPwdBase_gray));
canvas.drawRoundRect(rectContent, borderRadius, borderRadius, borderPaint);
//画分割线:分割线数量比密码数少1
borderPaint.setColor(borderColor);
borderPaint.setStrokeWidth(defaultSplitLineWidth);
for (int i = 1; i