如何在没有 xml 的情况下向我的 canvas 添加进度条？

Question

这是我绘制文本的代码。

public void drawText(Canvas canvas)
{



    Paint paint = new Paint();
    paint.setColor(Color.BLACK);
    paint.setTextSize(30);
    paint.setTypeface(Typeface.create(Typeface.DEFAULT, Typeface.BOLD));
    canvas.drawText("DISTANCE: " + (player.getScore()) + " M", 10, HEIGHT - 10, paint);
    canvas.drawText("BEST: " + HighScore + " M", WIDTH - 215, HEIGHT - 10, paint);



    if(!player.getPlaying()&&newGameCreated&&reset)
    {

        Bitmap b2 = BitmapFactory.decodeResource(getResources(), R.drawable.coollogo);
        canvas.drawBitmap(b2, WIDTH/2 - 440, HEIGHT/2 - 360, paint);



        canvas.drawRect(380, 380,630,465 , paint);
        canvas.drawBitmap(b1, WIDTH/2 - 260, HEIGHT/2 + 20, paint);




    }

}

我现在有这个：

我想要这样：

我想要那个地方的进度条，这样你就可以在游戏中升级了。没有加载条，只有一个进度条，这样你就可以看到你的升级进度了！谁能帮我做这个或者我该怎么做？

非常感谢

Answer 1

 ProgressBar progressBar = new ProgressBar(activity, null, android.R.attr.progressBarStyleSmall);

要显示进度条写progressbar.show(); 并为隐藏写 progressbar.dismiss();

例如：-

public void drawText(Canvas canvas)
{

ProgressBar progressBar = new ProgressBar(activity, null, android.R.attr.progressBarStyleSmall);
progressBar.show();
Paint paint = new Paint();
paint.setColor(Color.BLACK);
paint.setTextSize(30);
paint.setTypeface(Typeface.create(Typeface.DEFAULT, Typeface.BOLD));
canvas.drawText("DISTANCE: " + (player.getScore()) + " M", 10, HEIGHT - 10, paint);
canvas.drawText("BEST: " + HighScore + " M", WIDTH - 215, HEIGHT - 10, paint);



if(!player.getPlaying()&&newGameCreated&&reset)
{

    Bitmap b2 = BitmapFactory.decodeResource(getResources(), R.drawable.coollogo);
    canvas.drawBitmap(b2, WIDTH/2 - 440, HEIGHT/2 - 360, paint);



    canvas.drawRect(380, 380,630,465 , paint);
    canvas.drawBitmap(b1, WIDTH/2 - 260, HEIGHT/2 + 20, paint);




}

}

Answer 2

animator= ValueAnimator.ofFloat(0, 1);

        // It will take 5000ms for the animator to go from 0 to 1
        animator.setDuration(5000);

        // Callback that executes on animation steps.
        animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
            @Override
            public void onAnimationUpdate(ValueAnimator animation) {
                animationValue=((Float) (animation.getAnimatedValue())).floatValue();

                if(animationValue<=1.0 && animationValue>0.0) {
                    Log.i(TAG, "onAnimationUpdate: .... " + animationValue);
                    invalidate();
                }
            }
        });

使用animationValue绘制进度

canvas.drawRect(0,0,canvas.getWidth()*animationValue,getWidth()/8,mBackgroundBorder);

如何在没有 xml 的情况下向我的 canvas 添加进度条？

How can I add an progressbar to my canvas without xml?

android

android-progressbar

android-canvas