Surface
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2022-03-29 17:52:34
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Surface
画简单图形（点、线、圆、弧线、扇形、图片、文字）
//画笔
Paint paint = new Paint();
paint.setColor(Color.BLUE);
paint.setStrokeWidth(5);
paint.setTextSize(50);
paint.setStyle(Paint.Style.STROKE);
//画布
Canvas canvas = surfaceHolder.lockCanvas();
canvas.drawColor(Color.WHITE);
//点
canvas.drawPoint(500,500,paint);
//直线
canvas.drawLine(50,20,500,20,paint);
//○
canvas.drawOval(0,100,200,300,paint);
//长方形
canvas.drawRect(200,100,600,200,paint);
//弧线和扇形
canvas.drawArc(200,500,300,600,30,120,false,paint);
//图片
canvas.drawBitmap(BitmapFactory.decodeResource(getResources(),R.drawable.a),200,500,paint);
视频进度条 暂停 横竖屏切换
package com.example.day1112;
import android.content.pm.ActivityInfo;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.Handler;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.SeekBar;
import androidx.appcompat.app.AppCompatActivity;
import java.io.IOException;
import java.util.Timer;
import java.util.TimerTask;
public class MainActivity extends AppCompatActivity implements SurfaceHolder.Callback, View.OnClickListener {
private SurfaceView surface_id;
private SurfaceHolder surfaceHolder;
private String url = "http://vodkgeyttp8.vod.126.net/cloudmusic/OCFgJDQgIDAxNiAgNSE5IA==/mv/503273/468104880119c923975a4a40e93aa238.mp4?wsSecret=54823b58965d4b6d4b2cb5212c6e1e3e&wsTime=1573541268";
private MediaPlayer mediaPlayer = new MediaPlayer();
private SeekBar seekbar;
private Button button_pause;
private boolean isplay = true;
private Handler handler = new Handler();
private Button button_all;
private boolean isvertical = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
initPlayer();
}
private void initPlayer() {
if (mediaPlayer != null) {
mediaPlayer.reset();
try {
mediaPlayer.setDataSource(url);
mediaPlayer.prepareAsync();
mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mediaPlayer.start();
initTimer();
}
});
} catch (IOException e) {
e.printStackTrace();
}
}
}
private void initView() {
surface_id = (SurfaceView) findViewById(R.id.surface_id);
surfaceHolder = surface_id.getHolder();
surfaceHolder.addCallback(this);
seekbar = (SeekBar) findViewById(R.id.seekbar);
seekbar.setOnClickListener(this);
button_pause = (Button) findViewById(R.id.button_pause);
button_pause.setOnClickListener(this);
button_all = (Button) findViewById(R.id.button_all);
button_all.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (isvertical){
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
isvertical = false;
}else {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
isvertical = true;
}
}
});
seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if (fromUser) {
mediaPlayer.seekTo(progress);
}
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
if (mediaPlayer != null) {
mediaPlayer.setDisplay(holder);
button_pause.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (isplay) {
button_pause.setText("播放");
mediaPlayer.pause();
isplay = false;
} else {
button_pause.setText("暂停");
mediaPlayer.start();
isplay = true;
}
}
});
}
}
Timer timer;
private void initTimer() {
timer = new Timer();
timer.schedule(new TimerTask() {
@Override
public void run() {
final int position = mediaPlayer.getCurrentPosition();
handler.post(new Runnable() {
@Override
public void run() {
seekbar.setMax(mediaPlayer.getDuration());
seekbar.setProgress(position);
}
});
}
}, 0, 1000);
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
if (mediaPlayer != null) {
mediaPlayer.release();
mediaPlayer = null;
}
if (timer != null) {
timer.cancel();
}
}
@Override
public void onClick(View v) {
}
}
歌词滚动
package com.example.app3_lycir;
import android.Manifest;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.media.MediaPlayer;
import android.os.Build;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import androidx.appcompat.app.AppCompatActivity;
import com.example.app3_lycir.bean.LyricBean;
import com.example.app3_lycir.bean.LyricsBean;
import com.google.gson.Gson;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;
public class MainActivity extends AppCompatActivity implements SurfaceHolder.Callback {
private String lyric = "{\"sgc\":false,\"sfy\":false,\"qfy\":false,\"lyricUser\":{\"id\":29418062,\"status\":0,\"demand\":0,\"userid\":12907497,\"nickname\":\"Simfre\",\"uptime\":1441503572343},\"lrc\":{\"version\":5,\"lyric\":\"[by:简单de频率]\\n[00:00.000] 作曲 : 张超\\n[00:01.000] 作词 : 张超\\n[00:22.600]苍茫的天涯是我的爱\\n[00:26.280]绵绵的青山脚下花正开\\n[00:30.130]什么样的节奏是最呀最摇摆\\n[00:33.880]什么样的歌声才是最开怀\\n[00:37.750]弯弯的河水从天上来\\n[00:41.310]流向那万紫千红一片海\\n[00:45.330]火辣辣的歌谣是我们的期待\\n[00:48.880]一路边走边唱才是最自在\\n[00:52.630]我们要唱就要唱得最痛快\\n[00:56.610]你是我天边最美的云彩\\n[01:00.280]让我用心把你留下来（留下来）\\n[01:04.340]悠悠的唱着最炫的民族风\\n[01:07.840]让爱卷走所有的尘埃\\n[01:10.470]（我知道）你是我心中最美的云彩\\n[01:15.380]斟满美酒让你留下来（留下来）\\n[01:19.380]永远都唱着最炫的民族风\\n[01:22.760]是整片天空最美的姿态\\n[01:26.700]哟啦啦呵啦呗\\n[01:28.520]伊啦嗦啦呵啦呗呀\\n[01:30.700]我听见你心中动人的天籁\\n[01:34.260]登上天外云霄的舞台\\n[01:37.530]\\n[01:53.250]苍茫的天涯是我的爱\\n[01:56.940]绵绵的青山脚下花正开\\n[02:00.820]什么样的节奏是最呀最摇摆\\n[02:04.570]什么样的歌声才是最开怀\\n[02:08.440]弯弯的河水从天上来\\n[02:12.000]流向那万紫千红一片海\\n[02:15.810]火辣辣的歌谣是我们的期待\\n[02:19.620]一路边走边唱才是最自在\\n[02:23.310]我们要唱就要唱得最痛快\\n[02:27.220]你是我天边最美的云彩\\n[02:30.920]让我用心把你留下来（留下来）\\n[02:34.920]悠悠的唱着最炫的民族风\\n[02:38.410]让爱卷走所有的尘埃\\n[02:41.410]（我知道）你是我心中最美的云彩\\n[02:46.210]斟满美酒让你留下来（留下来）\\n[02:50.140]永远都唱着最炫的民族风\\n[02:53.460]是整片天空最美的姿态\\n[02:57.810]\\n[03:18.290]你是我天边最美的云彩\\n[03:21.910]让我用心把你留下来（留下来）\\n[03:26.030]悠悠的唱着最炫的民族风\\n[03:29.510]让爱卷走所有的尘埃\\n[03:32.260]（我知道）你是我心中最美的云彩\\n[03:37.010]斟满美酒让你留下来（留下来）\\n[03:41.070]永远都唱着最炫的民族风\\n[03:44.570]是整片天空最美的姿态\\n[03:48.990]\\n[03:50.300]我听见你心中那动人的天籁\\n[03:53.990]就忽如一夜春风袭来满面桃花开\\n[03:57.860]我忍不住去采 我忍不住去摘\\n[04:01.620]我敞开胸怀为你等待\\n[04:04.340]\\n[04:05.840]你是我天边最美的云彩\\n[04:09.280]让我用心把你留下来\\n[04:13.010]悠悠的唱着最炫的民族风\\n[04:16.750]让爱卷走所有的尘埃\\n[04:19.500]（我知道）你是我心中最美的云彩\\n[04:24.250]斟满美酒让你留下来（留下来）\\n[04:28.380]永远都唱着最炫的民族风\\n[04:31.750]是整片天空最美的姿态\\n[04:36.190]\\n\"},\"klyric\":{\"version\":0,\"lyric\":null},\"tlyric\":{\"version\":0,\"lyric\":null},\"code\":200}";
private List<LyricsBean> lyricsBeans = new ArrayList<>();
private SurfaceView sv;
private SurfaceHolder surfaceHolder;
private MediaPlayer mediaPlayer;
private int position;
private Timer timer = new Timer();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
requestPermissions(new String[]{Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE}, 102);
}
initView();
initLyric();
initPlayer();
}
private void initPlayer() {
if (mediaPlayer == null) {
mediaPlayer = new MediaPlayer();
mediaPlayer.reset();
try {
mediaPlayer.setDataSource("/sdcard/Music/凤凰传奇 - 最炫民族风(Live).mp3");
mediaPlayer.prepareAsync();
mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mediaPlayer.start();
initTimer();
}
});
} catch (IOException e) {
e.printStackTrace();
}
}
}
private void initTimer() {
timer.schedule(new TimerTask() {
@Override
public void run() {
int currentPosition = mediaPlayer.getCurrentPosition();
for (int i = 0; i < lyricsBeans.size(); i++) {
if (currentPosition <= lyricsBeans.get(i).getTime()) {
position = i - 1;
break;
}
}
}
}, 0, 100);
}
private void initView() {
sv = (SurfaceView) findViewById(R.id.sv);
surfaceHolder = sv.getHolder();
surfaceHolder.addCallback(this);
}
private void initLyric() {
LyricBean lyricBean = new Gson().fromJson(lyric, LyricBean.class);
LyricBean.LrcBean lrc = lyricBean.getLrc();
String lyric = lrc.getLyric();
String[] split = lyric.split("\n");
for (int i = 0; i < split.length; i++) {
String[] strings = split[i].split("\\[|\\:|\\.|\\]");
if (strings.length > 4) {
long time = Integer.parseInt(strings[1]) * 60 * 1000 + Integer.parseInt(strings[2]) * 1000 + Integer.parseInt(strings[3]);
if (strings.length > 5) {
lyricsBeans.add(new LyricsBean(strings[4] + ":" + strings[5], time));
} else {
lyricsBeans.add(new LyricsBean(strings[4], time));
}
}
}
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
new MyThread().start();
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
if (mediaPlayer != null) {
mediaPlayer.release();
mediaPlayer = null;
}
if (timer != null) {
timer.cancel();
}
}
class MyThread extends Thread {
@Override
public void run() {
super.run();
Paint paint = new Paint();
paint.setColor(Color.RED);
paint.setStrokeWidth(50);
paint.setTextSize(50);
while (true) {
Canvas canvas = surfaceHolder.lockCanvas();
if (canvas == null) {
break;
}
canvas.drawColor(Color.WHITE);
for (int i = 0; i < position; i++) {
canvas.drawText(lyricsBeans.get(i).getText(), getWindowManager().getDefaultDisplay().getWidth() / 4, 500 - (position - i) * 100, paint);
}
canvas.drawText(lyricsBeans.get(position).getText(), getWindowManager().getDefaultDisplay().getWidth() / 4, 500, paint);
for (int i = position + 1; i < lyricsBeans.size(); i++) {
canvas.drawText(lyricsBeans.get(i).getText(), getWindowManager().getDefaultDisplay().getWidth() / 4, 500 + (i - position) * 100, paint);
}
surfaceHolder.unlockCanvasAndPost(canvas);
}
}
}
}
画板
package com.example.day1113;
import android.annotation.SuppressLint;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import androidx.appcompat.app.AppCompatActivity;
public class MainActivity extends AppCompatActivity implements SurfaceHolder.Callback {
private Button button_clear;
private SurfaceView sv;
private SurfaceHolder surfaceHolder;
private Path path = new Path();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}
@SuppressLint("ClickableViewAccessibility")
private void initView() {
button_clear = (Button) findViewById(R.id.button_clear);
sv = (SurfaceView) findViewById(R.id.sv);
surfaceHolder = sv.getHolder();
surfaceHolder.addCallback(this);
button_clear.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
path.reset();
}
});
sv.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
int action = event.getAction();
float x = event.getX();
float y = event.getY();
if (action == MotionEvent.ACTION_DOWN){
path.moveTo(x,y);
}else if (action == MotionEvent.ACTION_MOVE){
path.lineTo(x,y);
}
return true;
}
});
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
new MyThread().start();
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
}
class MyThread extends Thread{
@Override
public void run() {
super.run();
Paint paint = new Paint();
paint.setColor(Color.GREEN);
paint.setStyle(Paint.Style.STROKE);
paint.setStrokeWidth(20);
while (true) {
Canvas canvas = surfaceHolder.lockCanvas();
if (canvas == null){
break;
}
canvas.drawColor(Color.WHITE);
canvas.drawPath(path,paint);
surfaceHolder.unlockCanvasAndPost(canvas);
}
}
}
}
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