qimozuoye has stoped
代碼如下：
package com.example.qimozuoye;
import androidx.lifecycle.ViewModelProviders;
import android.media.MediaPlayer;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import android.os.Handler;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.TextView;
public class ThirdFragment extends Fragment {
private ThirdViewModel mViewModel;
Button playBtn;
SeekBar positionBar;
SeekBar volumeBar;
TextView elapsedTimeLable;
TextView remainingTimeLable;
MediaPlayer mp;
int totalTime;
public static ThirdFragment newInstance() {
return new ThirdFragment();
}
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,
@Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.third_fragment, container, false);
playBtn = view.findViewById(R.id.playBtn);
elapsedTimeLable = view.findViewById(R.id.elapsedTimeLable);
remainingTimeLable = view.findViewById(R.id.remainingTimeLable);
positionBar = view.findViewById(R.id.positionBar);
volumeBar = view.findViewById(R.id.volumeBar);
return view;
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mViewModel = ViewModelProviders.of(this).get(ThirdViewModel.class);
mp = MediaPlayer.create(getContext(),R.raw.music);
mp.setLooping(true);
mp.seekTo(0);
mp.setVolume(0.5f, 0.5f);
totalTime = mp.getDuration();
positionBar.setMax(totalTime);
positionBar.setOnSeekBarChangeListener(
new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if (fromUser) {
mp.seekTo(progress);
positionBar.setProgress(progress);
}
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
}
);
volumeBar.setOnSeekBarChangeListener(
new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
float volumeNum = progress / 100f;
mp.setVolume(volumeNum, volumeNum);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
}
);
new Thread(new Runnable() {
@Override
public void run() {
while (mp != null) {
try {
Message msg = new Message();
msg.what = mp.getCurrentPosition();
handler.sendMessage(msg);
Thread.sleep(1000);
} catch (InterruptedException e) {
}
}
}
}).start();
}
private Handler handler = new Handler() {
@Override
public void handleMessage(@NonNull Message msg) {
int currentPosition = msg.what;
positionBar.setProgress(currentPosition);
String elapesedTime = createTimeLable(currentPosition);
elapsedTimeLable.setText(elapesedTime);
String remainingTime = createTimeLable(totalTime - currentPosition);
remainingTimeLable.setText("-" + remainingTime);
}
};
public String createTimeLable ( int time){
String timeLable = "";
int min = time / 1000 / 60;
int sec = time / 1000 % 60;
timeLable = min + ":";
if (sec < 10) timeLable += "0";
timeLable += sec;
return timeLable;
}
public void playBtnClick (View view){
if (!mp.isPlaying()) {
mp.start();
playBtn.setBackgroundResource(R.drawable.stop);
} else {
mp.pause();
playBtn.setBackgroundResource(R.drawable.play);
}
}
}
uj5u.com熱心網友回復：
報錯沒有Log日志的嗎？uj5u.com熱心網友回復：
錯誤日志！錯誤日志！錯誤日志！新手博客：https://blog.csdn.net/weimingjue/article/details/87921494
uj5u.com熱心網友回復：
沒有報錯uj5u.com熱心網友回復：
強行終止運行了，沒有報錯日志？
轉載請註明出處，本文鏈接：https://www.uj5u.com/yidong/83181.html
標籤：Android
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