jsyjst
6 years ago
parent
417e10a763
commit
14c85c581f
@ -1,192 +0,0 @@
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package com.example.musicplayer.widget;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.graphics.Bitmap;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.media.MediaPlayer;
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import android.util.AttributeSet;
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import android.view.View;
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import com.example.musicplayer.R;
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import com.example.musicplayer.entiy.LrcBean;
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import com.example.musicplayer.util.LrcUtil;
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import java.util.List;
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/**
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* <pre>
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* author : 残渊
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* time : 2019/03/18
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* desc : 自定义歌词界面
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* </pre>
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*/
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public class LrcView extends View {
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private List<LrcBean> list; //歌词列表
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private Paint gPaint; //静态歌词画笔
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private Paint hPaint; //动态歌词画笔
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private int width = 0, height = 0;
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private int currentPosition = 0; //歌曲播放的位置
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private MediaPlayer player;
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private int lastPosition = 0;
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private int highLineColor; //播放歌词的颜色
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private int lrcTextSize; //歌词大小
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private int lrcColor; //歌词颜色
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private int mode = 0;
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public final static int KARAOKE = 1;
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public void setHighLineColor(int highLineColor) {
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this.highLineColor = highLineColor;
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}
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public void setLrcColor(int lrcColor) {
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this.lrcColor = lrcColor;
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}
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public void setMode(int mode) {
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this.mode = mode;
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}
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public void setPlayer(MediaPlayer player) {
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this.player = player;
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}
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/**
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* @param lrc 标准歌词字符串
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*/
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public void setLrc(String lrc) {
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list = LrcUtil.parseStr2List(lrc);
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}
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public LrcView(Context context) {
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this(context, null);
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}
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public LrcView(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public LrcView(Context context, AttributeSet attrs, int defStyleAttr) {
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super(context, attrs, defStyleAttr);
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TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.LrcView);
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highLineColor = ta.getColor(R.styleable.LrcView_hignLineColor, getResources().getColor(R.color.green));
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lrcColor = ta.getColor(R.styleable.LrcView_lrcColor, getResources().getColor(android.R.color.darker_gray));
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float densityText = getResources().getDisplayMetrics().scaledDensity;
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lrcTextSize = ta.getDimensionPixelSize(R.styleable.LrcView_lrcTextSize,(int)(16*densityText));
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mode = ta.getInt(R.styleable.LrcView_lrcMode,mode);
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ta.recycle();
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gPaint = new Paint();
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gPaint.setAntiAlias(true);
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gPaint.setColor(lrcColor);
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gPaint.setTextSize(lrcTextSize);
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gPaint.setTextAlign(Paint.Align.CENTER);
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hPaint = new Paint();
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hPaint.setAntiAlias(true);
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hPaint.setColor(highLineColor);
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hPaint.setTextSize(lrcTextSize);
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hPaint.setTextAlign(Paint.Align.CENTER);
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}
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@Override
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protected void onDraw(Canvas canvas) {
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if (width == 0 || height == 0) {
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width = getMeasuredWidth();
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height = getMeasuredHeight();
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}
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if (list == null || list.size() == 0) {
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canvas.drawText("暂无歌词", width / 2, height / 2, gPaint);
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return;
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}
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getCurrentPosition();
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int currentMillis = player.getCurrentPosition();
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drawLrc2(canvas, currentMillis);
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long start = list.get(currentPosition).getStart();
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float v = (currentMillis - start) > 500 ? currentPosition * 120 : lastPosition * 120 + (currentPosition - lastPosition) * 120 * ((currentMillis - start) / 500f);
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setScrollY((int) v);
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if (getScrollY() == currentPosition * 120) {
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lastPosition = currentPosition;
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}
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postInvalidateDelayed(100);
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}
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private void drawLrc2(Canvas canvas, int currentMillis) {
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if (mode == 0) {
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for (int i = 0; i < list.size(); i++) {
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if (i == currentPosition) {
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canvas.drawText(list.get(i).getLrc(), width / 2, height / 2 + 120 * i, hPaint);
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} else {
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canvas.drawText(list.get(i).getLrc(), width / 2, height / 2 + 120 * i, gPaint);
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}
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}
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}else{
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for (int i = 0; i < list.size(); i++) {
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canvas.drawText(list.get(i).getLrc(), width / 2, height / 2 + 80 * i, gPaint);
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}
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String highLineLrc = list.get(currentPosition).getLrc();
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int highLineWidth = (int) gPaint.measureText(highLineLrc);
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int leftOffset = (width - highLineWidth) / 2;
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LrcBean lrcBean = list.get(currentPosition);
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long start = lrcBean.getStart();
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long end = lrcBean.getEnd();
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int i = (int) ((currentMillis - start) * 1.0f / (end - start) * highLineWidth);
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if (i > 0) {
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Bitmap textBitmap = Bitmap.createBitmap(i, 80, Bitmap.Config.ARGB_8888);
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Canvas textCanvas = new Canvas(textBitmap);
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textCanvas.drawText(highLineLrc, highLineWidth / 2, 80, hPaint);
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canvas.drawBitmap(textBitmap, leftOffset, height / 2 + 80 * (currentPosition - 1), null);
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}
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}
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}
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public void init() {
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currentPosition = 0;
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lastPosition = 0;
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setScrollY(0);
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invalidate();
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}
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private void drawLrc1(Canvas canvas) {
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String text = list.get(currentPosition).getLrc();
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canvas.drawText(text, width / 2, height / 2, hPaint);
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for (int i = 1; i < 10; i++) {
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int index = currentPosition - i;
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if (index > -1) {
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canvas.drawText(list.get(index).getLrc(), width / 2, height / 2 - 100 * i, gPaint);
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}
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}
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for (int i = 1; i < 10; i++) {
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int index = currentPosition + i;
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if (index < list.size()) {
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canvas.drawText(list.get(index).getLrc(), width / 2, height / 2 + 100 * i, gPaint);
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}
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}
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}
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private void getCurrentPosition() {
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try {
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int currentMillis = player.getCurrentPosition();
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if (currentMillis < list.get(0).getStart()) {
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currentPosition = 0;
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return;
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}
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if (currentMillis > list.get(list.size() - 1).getStart()) {
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currentPosition = list.size() - 1;
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return;
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}
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for (int i = 0; i < list.size(); i++) {
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if (currentMillis >= list.get(i).getStart() && currentMillis < list.get(i).getEnd()) {
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currentPosition = i;
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return;
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}
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}
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} catch (Exception e) {
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postInvalidateDelayed(100);
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}
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}
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}
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