正如在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，我搜索了类似的代码，但没有得到一个。 我是android编程的新手，任何帮助或链接都可能有所帮助。
答案 0 :(得分：14)
我创建了一个github项目。你可以看看它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;
}
});
答案 1 :(得分：4)
您可以使用我创建的库RecordView
它易于设置，并且模拟与WhatsApp相同的行为。
只需添加观看次数RecordView和RecordButton
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/parent_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.devlomi.recordview.MainActivity">
<com.devlomi.record_view.RecordView
android:id="@+id/record_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_toLeftOf="@id/record_button"
app:slide_to_cancel_arrow="@drawable/ic_keyboard_arrow_left"
app:slide_to_cancel_text="Slide To Cancel"
app:slide_to_cancel_margin_right="10dp"/>
<com.devlomi.record_view.RecordButton
android:id="@+id/record_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:background="@drawable/bg_mic"
android:scaleType="centerInside"
app:src="@drawable/ic_mic_white"
/>
然后在你的活动中
RecordView recordView = (RecordView) findViewById(R.id.record_view);
RecordButton recordButton = (RecordButton)
findViewById(R.id.record_button);
//IMPORTANT
recordButton.setRecordView(recordView);
最后你可以处理记录状态
onLessThanSecond
recordView.setOnRecordListener(this);
@Override
public void onStart() {
//Start Recording..
Log.d("RecordView", "onStart");
}
@Override
public void onCancel() {
//On Swipe To Cancel
Log.d("RecordView", "onCancel");
}
@Override
public void onFinish(long recordTime) {
//Stop Recording..
String time = getHumanTimeText(recordTime);
Log.d("RecordView", "onFinish");
Log.d("RecordTime", time);
}
@Override
public void onLessThanSecond() {
//When the record time is less than One Second
Log.d("RecordView", "onLessThanSecond");
}
答案 2 :(得分：3)
我已经实现了whatsapp应用程序中的发送按钮，该按钮可以处于发送状态或记录状态。您可以在blog post上查看此处。
使用非常简单。
<com.gunhansancar.android.animbutton.AnimButton
android:id="@+id/animButton"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_width="50dp"
android:layout_height="50dp"
app:first="@drawable/ic_mic"
app:second="@drawable/ic_send" />
你只需要设置第一个和第二个drawable。而且你必须通过调用goToState（）方法来设置状态。
答案 3 :(得分：0)
我使用了@ 3llomi提供的代码来创建一个仅生成扩展按钮而不会在幻灯片上取消动画的类。当我想将按钮放置在recyclerview内时，cancel动画只会使人满为患。我的代码带有一个回调，当记录完成时，该回调将提供存储在缓存中的音频文件 这些是必需的句点和xml：
public class RecordButton extends AppCompatImageView implements View.OnTouchListener{
private ScaleAnim scaleAnim;
private boolean listenForRecord = true;
private int commId;
private MediaRecorder recorder = null;
private boolean isRecording;
private static SoundPool soundPool = null;
private static int soundStart,soundEnd;
public RecordButton(Context context, int id) {
super(context);
init(context, null);
commId=id;
}
public RecordButton(Context context, AttributeSet attrs) {
super(context, attrs);
init(context, attrs);
}
public RecordButton(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context, attrs);
}
private void init(Context context, AttributeSet attrs) {
if (attrs != null) {
TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.RecordButton);
int imageResource = typedArray.getResourceId(R.styleable.RecordButton_mic_icon, -1);
if (imageResource != -1) {
setTheImageResource(imageResource);
}
typedArray.recycle();
}
if (soundPool==null){
soundPool = new SoundPool.Builder()
.setMaxStreams(5)
.build();
//these are just two wav files with short intro and exit sounds
soundStart=soundPool.load(getContext(),R.raw.start_recording_sound,0);
soundEnd=soundPool.load(getContext(),R.raw.end_recording_sound,0);
}
scaleAnim = new ScaleAnim(this);
this.setOnTouchListener(this);
}
private void setTheImageResource(int imageResource) {
Drawable image = AppCompatResources.getDrawable(getContext(), imageResource);
setImageDrawable(image);
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
setClip(this);
}
public void setClip(View v) {
if (v.getParent() == null) {
return;
}
if (v instanceof ViewGroup) {
((ViewGroup) v).setClipChildren(false);
((ViewGroup) v).setClipToPadding(false);
}
if (v.getParent() instanceof View) {
setClip((View) v.getParent());
}
}
@Override
public boolean onTouch(View v, MotionEvent event) {
if (isListenForRecord()) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
((RecordButton) v).startScale();
soundPool.play(soundStart,1,1,0,0,1);
startRecording();
break;
case MotionEvent.ACTION_UP:
stopRecording();
soundPool.play(soundEnd,1,1,0,0,1);
((RecordButton) v).stopScale();
break;
}
}
return isListenForRecord();
}
File file;
//audio recording tools
private void startRecording() {
if (isRecording){
stopRecording();
}
String fileName=getContext().getExternalCacheDir().getAbsolutePath()+"/"+commId+"_"+new Date().getTime()+".amr";
file=new File(fileName);
recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_WB);
recorder.setOutputFile(fileName);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_WB);
recorder.setAudioSamplingRate(8000);
recorder.setAudioChannels(1);
recorder.setAudioEncodingBitRate(12000);
try {
recorder.prepare();
} catch (IOException e) {
e.printStackTrace();
}
Toast.makeText(getContext(),fileName,Toast.LENGTH_LONG).show();
recorder.start();
setIsRecording(true);
}
private void stopRecording() {
if (isRecording) {
recorder.stop();
recorder.release();
setIsRecording(false);
recordingFinishedListener.onRecordingFinished(file);
recorder = null;
}
}
private void setIsRecording(boolean isRecording){
this.isRecording=isRecording;
}
protected void startScale() {
scaleAnim.start();
}
protected void stopScale() {
scaleAnim.stop();
}
public void setListenForRecord(boolean listenForRecord) {
this.listenForRecord = listenForRecord;
}
public boolean isListenForRecord() {
return listenForRecord;
}
//callback for when a recording has been made
public interface RecordingFinishedListener{
void onRecordingFinished(File file);
}
RecordingFinishedListener recordingFinishedListener;
public void setRecordingFinishedListener(RecordingFinishedListener recordingFinishedListener) {
this.recordingFinishedListener = recordingFinishedListener;
}
}
然后是负责动画的类，它允许您定义扩展程度
public class ScaleAnim {
private View view;
public ScaleAnim(View view) {
this.view = view;
}
void start() {
AnimatorSet set = new AnimatorSet();
ObjectAnimator scaleY = ObjectAnimator.ofFloat(view, "scaleY", 1.3f);
ObjectAnimator scaleX = ObjectAnimator.ofFloat(view, "scaleX", 1.3f);
set.setDuration(150);
set.setInterpolator(new AccelerateDecelerateInterpolator());
set.playTogether(scaleY, scaleX);
set.start();
}
void stop() {
AnimatorSet set = new AnimatorSet();
ObjectAnimator scaleY = ObjectAnimator.ofFloat(view, "scaleY", 1.0f);
// scaleY.setDuration(250);
// scaleY.setInterpolator(new DecelerateInterpolator());
ObjectAnimator scaleX = ObjectAnimator.ofFloat(view, "scaleX", 1.0f);
// scaleX.setDuration(250);
// scaleX.setInterpolator(new DecelerateInterpolator());
set.setDuration(150);
set.setInterpolator(new AccelerateDecelerateInterpolator());
set.playTogether(scaleY, scaleX);
set.start();
}
}
和attrs.xml文件。其余的只是一个麦克风图标，还有一些您可以自己找到的声音
<resources>
<declare-styleable name="RecordButton">
<attr name="mic_icon" format="reference" />
</declare-styleable>
</resources>
通过在“记录”按钮上设置“ RecordingFinishedListener”，您可以继续处理记录的声音。