㈠ android 如何實現 邊錄音 同時顯示 歌詞評分有原理，代碼就好了。。
歌曲播放時歌詞同步顯示，我們需要讀取以上歌詞文件的每一行轉換成成一個個歌詞實體,可根據當前播放器的播放進度與每句歌詞的開始時間，得到當前屏幕中央高亮顯示的那句歌詞
我們需要讀取以上歌詞文件的每一行轉換成成一個個歌詞實體：
代碼如下:
public class LyricObject {
public int begintime; // 開始時間
public int endtime; // 結束時間
public int timeline; // 單句歌詞用時
public String lrc; // 單句歌詞
}
可根據當前播放器的播放進度與每句歌詞的開始時間，得到當前屏幕中央高亮顯示的那句歌詞。在UI線程中另起線程，通過回調函數 onDraw() 每隔100ms重新繪制屏幕，實現歌詞平滑滾動的動畫效果。MainActivity代碼如下：
代碼如下:
import java.io.IOException;
import android.app.Activity;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
public class MainActivity extends Activity {
/** Called when the activity is first created. */
private LyricView lyricView;
private MediaPlayer mediaPlayer;
private Button button;
private SeekBar seekBar;
private String mp3Path;
private int INTERVAL=45;//歌詞每行的間隔
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// this.requestWindowFeature(Window.FEATURE_NO_TITLE);
// getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);
mp3Path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/LyricSync/1.mp3";
lyricView = (LyricView) findViewById(R.id.mylrc);
mediaPlayer = new MediaPlayer();
// this.requestWindowFeature(Window.FEATURE_NO_TITLE);
ResetMusic(mp3Path);
SerchLrc();
lyricView.SetTextSize();
button = (Button) findViewById(R.id.button);
button.setText("播放");
seekBar = (SeekBar) findViewById(R.id.seekbarmusic);
seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// TODO Auto-generated method stub
if (fromUser) {
mediaPlayer.seekTo(progress);
lyricView.setOffsetY(220 - lyricView.SelectIndex(progress)
* (lyricView.getSIZEWORD() + INTERVAL-1));
}
}
});
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (mediaPlayer.isPlaying()) {
button.setText("播放");
mediaPlayer.pause();
} else {
button.setText("暫停");
mediaPlayer.start();
lyricView.setOffsetY(220 - lyricView.SelectIndex(mediaPlayer.getCurrentPosition())
* (lyricView.getSIZEWORD() + INTERVAL-1));
}
}
});
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
ResetMusic(mp3Path);
lyricView.SetTextSize();
lyricView.setOffsetY(200);
mediaPlayer.start();
}
});
seekBar.setMax(mediaPlayer.getDuration());
new Thread(new runable()).start();
}
public void SerchLrc() {
String lrc = mp3Path;
lrc = lrc.substring(0, lrc.length() - 4).trim() + ".lrc".trim();
LyricView.read(lrc);
lyricView.SetTextSize();
lyricView.setOffsetY(350);
}
public void ResetMusic(String path) {
mediaPlayer.reset();
try {
mediaPlayer.setDataSource(mp3Path);
mediaPlayer.prepare();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
class runable implements Runnable {
@Override
public void run() {
// TODO Auto-generated method stub
while (true) {
try {
Thread.sleep(100);
if (mediaPlayer.isPlaying()) {
lyricView.setOffsetY(lyricView.getOffsetY() - lyricView.SpeedLrc());
lyricView.SelectIndex(mediaPlayer.getCurrentPosition());
seekBar.setProgress(mediaPlayer.getCurrentPosition());
mHandler.post(mUpdateResults);
}
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
Handler mHandler = new Handler();
Runnable mUpdateResults = new Runnable() {
public void run() {
lyricView.invalidate(); // 更新視圖
}
};
}
㈡ android studio怎麼實現字幕自動滾動
這個Android字幕滾動類的自定義功能比較多，可定義當前滾動到結尾時的停頓時間，單位：毫秒，還可設置當前的滾動速度，值越小，速度越快游跡。
主要實現代碼如下：
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package com.tony.autoscroll;
import android.content.Context;
import android.os.Handler;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.ScrollView;
/**
* @author Tony
*/
public class AutoScrollView extends ScrollView {
private final Handler handler = new Handler();
private long ration = 50;
private boolean isScrolled = false;
private int currentIndex = 0;
private long period = 1000;
private int currentY = -1;
private double x;
private double y;
private int type = -1;
/**
* @param context
*/
public AutoScrollView(Context context) {
this(context, null);
}
/**
* @param context
* @param attrs
*/
public AutoScrollView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
/**
* @param context
* @param attrs
* @param defStyle
*/
public AutoScrollView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public boolean onTouchEvent(MotionEvent event) {
int Action = event.getAction();
switch (Action) {
case MotionEvent.ACTION_DOWN:
x=event.getX();
y=event.getY();
if (type == 0) {
setScrolled(false);
}
break;
case MotionEvent.ACTION_MOVE:
double moveY = event.getY() - y;
double moveX = event.getX() - x;
Log.d("神鄭並test", "moveY = " + moveY + "叢游 moveX = " + moveX );
if ((moveY>20||moveY<-20) && (moveX < 50 || moveX > -50) && getParent() != null) {
getParent().(true);
}
break;
case MotionEvent.ACTION_UP:
if (type == 0) {
currentIndex = getScrollY();
setScrolled(true);
}
break;
default:
break;
}
return super.onTouchEvent(event);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent p_event)
{
Log.d("test", "onInterceptTouchEvent");
return true;
}
/**
* 判斷當前是否為滾動狀態
* @return the isScrolled
*/
public boolean isScrolled() {
return isScrolled;
}
/**
* 開啟或者關閉自動滾動功能
* @param isScrolled
* true為開啟，false為關閉
*/
public void setScrolled(boolean isScrolled) {
this.isScrolled = isScrolled;
autoScroll();
}
/**
* 獲取當前滾動到結尾時的停頓時間，單位：毫秒
* @return the period
*/
public long getPeriod() {
return period;
}
/**
* 設置當前滾動到結尾時的停頓時間，單位：毫秒
* @param period
*the period to set
*/
public void setPeriod(long period) {
this.period = period;
}
/**
* 獲取當前的滾動速度，單位：毫秒，值越小，速度越快。
* @return the speed
*/
public long getSpeed() {
return ration;
}
/**
* 設置當前的滾動速度，單位：毫秒，值越小，速度越快。
* @param speed
*the ration to set
*/
public void setSpeed(long speed) {
this.ration = speed;
}
public void setType(int type){
this.type = type;
}
private void autoScroll() {
handler.postDelayed(new Runnable() {
@Override
public void run() {
boolean flag = isScrolled;
if (flag) {
//Log.d("test", "currentY = " + currentY + " getScrollY() = "+ getScrollY() );
if (currentY == getScrollY()) {
try {
Thread.sleep(period);
} catch (InterruptedException e) {
e.printStackTrace();
}
currentIndex = 0;
scrollTo(0, 0);
handler.postDelayed(this, period);
} else {
currentY = getScrollY();
handler.postDelayed(this, ration);
currentIndex++;
scrollTo(0, currentIndex * 1);
}
} else {
//currentIndex = 0;
//scrollTo(0, 0);
}
}
}, ration);
}
}
㈢ 新手請問，在android想實現像卡拉ok一樣的字幕顯示效果，該怎麼實現
如果你以前看過類似的ppt，那個ppt很可能是這樣的：
先設置好歌詞的文本框，入場和出場方式分兩種
1）左右滾動，可以選「飛入」，也可以是「切入」，自己看著選吧。
2）上下滾動，可以對文本框設置路徑，以「淡入」和「淡出」的進場方式，也可
至於同步，應該自己設置時間，在「自定義動畫」下拉箭頭中選「計時」可以手動輸入時間。