UPD
我有课程代码：
const _7z = require('7zip-min');
_7z.unpack('zip-7z-file-path', 'extract-directory', err => {
if (err) {
return cb(err);
}
cb(null, 'extract-directory');
});
主要目的是将新值每秒package asus.example.com.player;
import android.annotation.SuppressLint;
import android.os.Handler;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity implements View.OnClickListener, SeekBar.OnSeekBarChangeListener {
private Button prev;
private Button next;
private Button play;
private Snackbar snackbar;
private SeekBar seekBar;
private TextView curTime;
private Handler handler = new Handler();
private final int SONG_LENGTH = 120;
View.OnClickListener snackbarOnClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
snackbar.dismiss();
}
};
private void onPrevClick(final View view){
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
handler.post(new Runnable() {
@Override
public void run() {
snackbar = Snackbar.make(view, "Prev", Snackbar.LENGTH_INDEFINITE).setAction("Close", snackbarOnClickListener);
snackbar.show();
}
});
}
});
thread.run();
}
private void onPlayClick(final View view){
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
int secs = seekBar.getProgress()*SONG_LENGTH/100;
while (secs<=SONG_LENGTH) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
seekBar.setProgress(secs/SONG_LENGTH*100);
secs++;
}
}
});
thread.run();
}
private void onNextClick(final View view){
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
handler.post(new Runnable() {
@Override
public void run() {
snackbar = Snackbar.make(view, "Next", Snackbar.LENGTH_INDEFINITE).setAction("Close", snackbarOnClickListener);
snackbar.show();
}
});
}
});
thread.run();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
prev = findViewById(R.id.prev);
play = findViewById(R.id.play);
next = findViewById(R.id.next);
seekBar = findViewById(R.id.seekBar);
curTime = findViewById(R.id.curTime);
prev.setOnClickListener(this);
play.setOnClickListener(this);
next.setOnClickListener(this);
seekBar.setOnSeekBarChangeListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.prev:
onPrevClick(v);
break;
case R.id.play:
onPlayClick(v);
break;
case R.id.next:
onNextClick(v);
break;
}
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
int seconds = (SONG_LENGTH*seekBar.getProgress()/100)%60;
int minutes = (SONG_LENGTH*seekBar.getProgress()/100)/60;
@SuppressLint("DefaultLocale")
String result = String.format("%d:%02d", minutes, seconds);
curTime.setText(result);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar){
}
}
放入TextView。由于无法从secs<=SONG_LENGTH进行操作，因此我使用thread。当我遇到Handler这样的问题时，它可以帮助我，但是此时程序停止了。它没有关闭，但是我无法单击任何按钮SnackBar。有什么问题，如何解决？并且，如果这对您来说并不困难-请解释一下为什么它可以与SeekBar一起使用，但不能与SnackBar一起使用？