Android Seekbar 作为对话框

Question

我正在创建按钮来改变音量，我想要 onClick，seekbar 显示为一种 dialog（ 但不是那个覆盖屏幕并且不允许与按钮下方屏幕上的其他元素交互) 并且它应该在几次 seconds.I 后消失不想使用 alertDialog android 规定涵盖了整个 activity.How 我要这样做吗？也有任何图书馆可以实现这一目标吗？

Answer 1

您可以使用 WindowManager 将您的 SeekBar 添加到 window，同时您可以与您的 activity 或其他人互动。 Post 一个处理程序在指定时间后删除该视图。

        View yourSeekBarView = inflator.inflate(R.layout.your_layout_xml,null,false);
        WindowManager.LayoutParams params = new WindowManager.LayoutParams(
                150,
                50,
                WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
                0 | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
                PixelFormat.TRANSLUCENT);  
        params.gravity = Gravity.CENTER_HORIZONTAL |Gravity.TOP;      
        WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
        wm.addView(oView, params);

wm.removeView(yourSeekBarView);

Answer 2

将 seekBar 放在 xml 布局中 alpha="0" 的按钮下方，然后尝试：

    SeekBar mSeekbar;
    int delay = 1000;
    Button mButton;
    Handler mHandler;
    Runnable mRunnable = new Runnable() {
        @Override
        public void run() {
            Animation anim = new AlphaAnimation(1, 0);
            anim.setDuration(500);
            mSeekbar.startAnimation(anim);
        }
    };


    //inside onCreate (or wherever you decide)
    mHandler = new Handler(); //(android.os)
    mButton = (Button) findViewById(R.id.button1);

    mSeekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {

        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            mHandler.removeCallbacks(mRunnable);
        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            mHandler.postDelayed(mRunnable, delay);
        }
    });


    mButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if(mSeekbar.getAlpha() == 0) {
                Animation anim = new AlphaAnimation(0, 1);
                anim.setDuration(500);
                anim.setAnimationListener(new Animation.AnimationListener() {
                    @Override
                    public void onAnimationStart(Animation animation) {

                    }

                    @Override
                    public void onAnimationEnd(Animation animation) {
                        mHandler.postDelayed(mRunnable, delay);
                    }

                    @Override
                    public void onAnimationRepeat(Animation animation) {

                    }
                });
                mSeekbar.startAnimation(anim);
            }
        }
    });

Android Seekbar 作为对话框

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