Java 当应用程序关闭且手机关闭时,警报未播放
我想在计时器为00:00时播放警报声。我还想推一个通知。通知工作正常。但是我的声音有问题 当应用程序打开时,一切正常,但当手机处于待机状态且屏幕为黑色时,一切都不会发生。只显示通知 我试图用MediaPlayer解决这个问题。这条路对吗? 我必须使用唤醒锁吗 有没有办法让它工作,让计时器做他应该做的 我怎样才能解决这个问题Java 当应用程序关闭且手机关闭时,警报未播放,java,android,audio,timer,countdown,Java,Android,Audio,Timer,Countdown,我想在计时器为00:00时播放警报声。我还想推一个通知。通知工作正常。但是我的声音有问题 当应用程序打开时,一切正常,但当手机处于待机状态且屏幕为黑色时,一切都不会发生。只显示通知 我试图用MediaPlayer解决这个问题。这条路对吗? 我必须使用唤醒锁吗 有没有办法让它工作,让计时器做他应该做的 我怎样才能解决这个问题 package com.example.countdown; import androidx.appcompat.app.AppCompatActivity; impor
package com.example.countdown;
import androidx.appcompat.app.AppCompatActivity;
import android.content.SharedPreferences;
import android.media.AudioAttributes;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.media.SoundPool;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import android.view.inputmethod.InputMethodManager;
import com.google.android.gms.ads.AdView;
import java.util.Locale;
import com.google.android.gms.ads.MobileAds;
import com.google.android.gms.ads.initialization.InitializationStatus;
import com.google.android.gms.ads.initialization.OnInitializationCompleteListener;
import com.google.android.gms.ads.AdRequest;
import com.tapadoo.alerter.Alerter;
public class MainActivity extends AppCompatActivity {
private EditText mEditTextInput;
private TextView mTextViewCountDown;
private Button mButtonSet;
private Button mButtonStartPause;
private Button mButtonReset;
private Button mButton8h;
private Button mButton12h;
private Button mButton24h;
private Button mButton3d;
private Button mButton7d;
private Button mButton_showAlerter;
private Button mButtonAlarmSound;
private CountDownTimer mCountDownTimer;
private boolean mTimerRunning;
private long mStartTimeInMillis;
private long mTimeLeftInMillis;
private long mEndTime;
private SoundPool soundPool;
private int alarm;
AdView mAdView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MobileAds.initialize(this, new OnInitializationCompleteListener() {
@Override
public void onInitializationComplete(InitializationStatus initializationStatus) {
}
});
mAdView = findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
mAdView.loadAd(adRequest);
mEditTextInput = findViewById(R.id.edit_text_input);
mTextViewCountDown = findViewById(R.id.text_view_countdown);
mButtonSet = findViewById(R.id.button_set);
mButtonStartPause = findViewById(R.id.button_start_pause);
mButtonReset = findViewById(R.id.button_reset);
mButton8h = findViewById(R.id.button_8h);
mButton12h = findViewById(R.id.button_12h);
mButton24h = findViewById(R.id.button_24h);
mButton3d = findViewById(R.id.button_3d);
mButton7d = findViewById(R.id.button_7d);
mButton_showAlerter = findViewById(R.id.Button_showAlerter);
mButtonAlarmSound = findViewById(R.id.Button_alarmSound);
mButtonSet.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String input = mEditTextInput.getText().toString();
if (input.length() == 0) {
Toast.makeText(MainActivity.this, "Field can´t be empty!", Toast.LENGTH_SHORT).show();
return;
}
long millisInput = Long.parseLong(input) * 60000;
if (millisInput == 0) {
Toast.makeText(MainActivity.this, "Please enter a positive number!", Toast.LENGTH_SHORT).show();
return;
}
setTime(millisInput);
mEditTextInput.setText("");
}
});
mButtonStartPause.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(mTimerRunning){
pauseTimer();
} else {
startTimer();
}
}
});
mButtonReset.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
resetTimer();
}
});
mButton8h.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
mEditTextInput.setText("480");
}
});
mButton12h.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
mEditTextInput.setText("720");
}
});
mButton24h.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
mEditTextInput.setText("1440");
}
});
mButton3d.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
mEditTextInput.setText("4320");
}
});
mButton7d.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
mEditTextInput.setText("10080");
}
});
}
private void setTime(long milliseconds){
mStartTimeInMillis = milliseconds;
resetTimer();
closeKeyboard();
}
private void startTimer() {
mEndTime = System.currentTimeMillis() + mTimeLeftInMillis;
mCountDownTimer = new CountDownTimer(mTimeLeftInMillis, 100) {
@Override
public void onTick(long millisUntillFinished) {
mTimeLeftInMillis = millisUntillFinished;
updateCountDownText();
}
@Override
public void onFinish() {
mTimerRunning = false;
updateWatchInterface();
mButton_showAlerter.performClick();
mButtonAlarmSound.performClick();
}
}.start();
mTimerRunning=true;
updateWatchInterface();
}
private void pauseTimer() {
mCountDownTimer.cancel();
mTimerRunning=false;
updateWatchInterface();
}
private void resetTimer() {
mTimeLeftInMillis = mStartTimeInMillis;
updateCountDownText();
updateWatchInterface();
}
private void updateCountDownText() {
int hours = (int) (mTimeLeftInMillis / 1000) / 3600;
int minutes = (int) ((mTimeLeftInMillis / 1000) %3600) / 60;
int seconds = (int) (mTimeLeftInMillis / 1000) % 60;
String timeLeftFormatted;
if (hours > 0){
timeLeftFormatted = String.format(Locale.getDefault(),
"%02d:%02d:%02d", hours, minutes, seconds);
}else {
timeLeftFormatted = String.format(Locale.getDefault(),
"%02d:%02d", minutes, seconds);
}
mTextViewCountDown.setText(timeLeftFormatted);
}
private void updateWatchInterface(){
if (mTimerRunning){
mEditTextInput.setVisibility(View.INVISIBLE);
mButtonSet.setVisibility(View.INVISIBLE);
mButtonReset.setVisibility(View.INVISIBLE);
mButtonStartPause.setText("Stop");
}else {
mEditTextInput.setVisibility(View.VISIBLE);
mButtonSet.setVisibility(View.VISIBLE);
mButtonStartPause.setText("Start");
if(mTimeLeftInMillis < 1000) {
mButtonStartPause.setVisibility(View.INVISIBLE);
} else {
mButtonStartPause.setVisibility(View.VISIBLE);
}
if(mTimeLeftInMillis < mStartTimeInMillis) {
mButtonReset.setVisibility(View.VISIBLE);
} else {
mButtonReset.setVisibility(View.INVISIBLE);
}
}
}
private void closeKeyboard() {
View view = this.getCurrentFocus();
if (view != null) {
InputMethodManager imm = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
}
@Override
protected void onStop() {
super.onStop();
SharedPreferences prefs = getSharedPreferences("prefs", MODE_PRIVATE);
SharedPreferences.Editor editor = prefs.edit();
editor.putLong("startTimeInMillis", mStartTimeInMillis);
editor.putLong("millisLeft", mTimeLeftInMillis);
editor.putBoolean("timerRunning", mTimerRunning);
editor.putLong("endTime", mEndTime);
editor.apply();
if (mCountDownTimer != null) {
mCountDownTimer.cancel();
}
}
@Override
protected void onStart() {
super.onStart();
SharedPreferences prefs = getSharedPreferences("prefs", MODE_PRIVATE);
mStartTimeInMillis = prefs.getLong("startTimeInMillis", 600000);
mTimeLeftInMillis = prefs.getLong("millisLeft", mStartTimeInMillis);
mTimerRunning = prefs.getBoolean("timerRunning", false);
updateCountDownText();
updateWatchInterface();
if (mTimerRunning) {
mEndTime = prefs.getLong("endTime", 0);
mTimeLeftInMillis = mEndTime - System.currentTimeMillis();
if(mTimeLeftInMillis < 0){
mTimeLeftInMillis=0;
mTimerRunning = false;
updateCountDownText();
updateWatchInterface();
}else{
startTimer();
}
}
final MediaPlayer mp=MediaPlayer.create(this, R.raw.alarm);
mButtonAlarmSound.setOnClickListener(new View.OnClickListener(){
public void onClick(View v){
mp.start();
}
});
}
public void showAlerter(View v) {
Alerter.create(this)
.setTitle("Shield Timer Alarm")
.setText("Captain, your Shield will drop now. Please prepaire for your next fight!")
.setIcon(R.drawable.ic_android_black_24dp)
.setBackgroundColorRes(R.color.colorPrimary)
.setDuration(5000)
.enableSwipeToDismiss()
.show();
}
}
´´´
package com.example.countdown;
导入androidx.appcompat.app.appcompat活动;
导入android.content.SharedReferences;
导入android.media.AudioAttributes;
导入android.media.AudioManager;
导入android.media.MediaPlayer;
导入android.media.Ringtone;
导入android.media.ringtonemager;
导入android.media.SoundPool;
导入android.net.Uri;
导入android.os.Build;
导入android.os.Bundle;
导入android.os.CountDownTimer;
导入android.view.view;
导入android.widget.Button;
导入android.widget.EditText;
导入android.widget.TextView;
导入android.widget.Toast;
导入android.view.inputmethod.InputMethodManager;
导入com.google.android.gms.ads.AdView;
导入java.util.Locale;
导入com.google.android.gms.ads.MobileAds;
导入com.google.android.gms.ads.initialization.InitializationStatus;
导入com.google.android.gms.ads.initialization.OnInitializationCompleteListener;
导入com.google.android.gms.ads.AdRequest;
导入com.tapadoo.alerter.alerter;
公共类MainActivity扩展了AppCompatActivity{
私有EditText mEditTextInput;
私有文本视图MTEXTVIEW倒计时;
私人按钮mButtonSet;
私人按钮mButtonStartPause;
私人按钮;
专用按钮mButton8h;
专用按钮MBUTON12H;
专用按钮mButton24h;
私人按钮mButton3d;
专用按钮mButton7d;
私人按钮mButton_showAlerter;
私人按钮mButtonAlarmSound;
专用倒数计时器mCountDownTimer;
私有布尔mTimerRunning;
私人长mStartTimeInMillis;
私有长mtimelftinmillis;
私生活时间长;
私人声池声池;
专用int报警;
AdView mAdView;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
初始化(这是新的OnInitializationCompleteListener(){
@凌驾
public void onInitializationComplete(初始化状态InitializationStatus){
}
});
mAdView=findviewbyd(R.id.adView);
AdRequest AdRequest=新建AdRequest.Builder().build();
mAdView.loadAd(adRequest);
mEditTextInput=findViewById(R.id.edit\u text\u input);
mTextViewCountDown=findviewbyd(R.id.text\u view\u countdown);
mButtonSet=findviewbyd(R.id.按钮组);
mButtonStartPause=findViewById(R.id.按钮\启动\暂停);
mbutonreset=findviewbyd(R.id.按钮\ U重置);
mButton8h=findViewById(R.id.按钮_8h);
mButton12h=findViewById(R.id.按钮_12h);
mButton24h=findviewbyd(R.id.button_24h);
mButton3d=findViewById(R.id.button_3d);
mButton7d=findviewbyd(R.id.button_7d);
mButton_showAlerter=findViewById(R.id.Button_showAlerter);
mButtonAlarmSound=findViewById(R.id.按钮\警报声);
mButtonSet.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图){
字符串输入=mEditTextInput.getText().toString();
if(input.length()==0){
Toast.makeText(MainActivity.this,“字段不能为空!”,Toast.LENGTH\u SHORT.show();
返回;
}
long millisInput=long.parseLong(输入)*60000;
如果(毫秒输入==0){
Toast.makeText(MainActivity.this,“请输入正数!”,Toast.LENGTH\u SHORT.show();
返回;
}
设定时间(毫输入);
mEditTextInput.setText(“”);
}
});
mButtonStartPause.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图){
如果(mTimerRunning){
pauseTimer();
}否则{
startTimer();
}
}
});
mbutonreset.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图){
重置计时器();
}
});
mButton8h.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图){
mEditTextInput.setText(“480”);
}
});
mButton12h.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图){
mEditTextInput.setText(“720”);
}
});
mButton24h.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图){
mEditTextInput.setText(“1440”);
}
});
mButton3d.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图){
mEditTextInput.setText(“4320”);
}
});
mButton7d.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图){
mEditTextInput.setText(“10080”);
}
});
}
私有void设置时间(长毫秒){
mStartTimeInMillis=毫秒;
重置计时器();
关闭键盘();
}
私有void startTimer(){