android - 如何创建一个带有滑动取消的录音按钮的whatsapp

Question

因为在 whatsapp 中我需要一个重新编码按钮和一个幻灯片来取消和淡化动画，我已经搜索了类似的代码但没有找到。我是 android 编程的新手，任何帮助或链接都可能有所帮助。

Answer 1

我创建了一个github项目，你可以看看https://github.com/sarathnk/Audio

audioSendButton.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View view, MotionEvent motionEvent) {
                if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
                    FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) slideText
                            .getLayoutParams();
                    params.leftMargin = dp(30);
                    slideText.setLayoutParams(params);
                    ViewProxy.setAlpha(slideText, 1);
                    startedDraggingX = -1;
                    // startRecording();
                    startrecord();
                    audioSendButton.getParent()
                            .requestDisallowInterceptTouchEvent(true);
                    recordPanel.setVisibility(View.VISIBLE);
                } else if (motionEvent.getAction() == MotionEvent.ACTION_UP
                        || motionEvent.getAction() == MotionEvent.ACTION_CANCEL) {
                    startedDraggingX = -1;
                    stoprecord();
                    // stopRecording(true);
                } else if (motionEvent.getAction() == MotionEvent.ACTION_MOVE) {
                    float x = motionEvent.getX();
                    if (x < -distCanMove) {
                        stoprecord();
                        // stopRecording(false);
                    }
                    x = x + ViewProxy.getX(audioSendButton);
                    FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) slideText
                            .getLayoutParams();
                    if (startedDraggingX != -1) {
                        float dist = (x - startedDraggingX);
                        params.leftMargin = dp(30) + (int) dist;
                        slideText.setLayoutParams(params);
                        float alpha = 1.0f + dist / distCanMove;
                        if (alpha > 1) {
                            alpha = 1;
                        } else if (alpha < 0) {
                            alpha = 0;
                        }
                        ViewProxy.setAlpha(slideText, alpha);
                    }
                    if (x <= ViewProxy.getX(slideText) + slideText.getWidth()
                            + dp(30)) {
                        if (startedDraggingX == -1) {
                            startedDraggingX = x;
                            distCanMove = (recordPanel.getMeasuredWidth()
                                    - slideText.getMeasuredWidth() - dp(48)) / 2.0f;
                            if (distCanMove <= 0) {
                                distCanMove = dp(80);
                            } else if (distCanMove > dp(80)) {
                                distCanMove = dp(80);
                            }
                        }
                    }
                    if (params.leftMargin > dp(30)) {
                        params.leftMargin = dp(30);
                        slideText.setLayoutParams(params);
                        ViewProxy.setAlpha(slideText, 1);
                        startedDraggingX = -1;
                    }
                }
                view.onTouchEvent(motionEvent);
                return true;
            }
        });