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[英]Android: What happens to MediaPlayer after Service START_STICKY?
[英]Android stop start_sticky service after finishing the task
我试图在应用程序被杀死后创建服务,并在完成任务并停止服务后等待移动设备连接到wifi,当我发送任务时应用程序未被杀死但在我将其杀死后,它可以正常工作应用程序服务不会退出
我有三节课,我开始服务的主要课
public class MainActivity extends AppCompatActivity {
//----------------------USER FIELDS -------------------->
Spinner Category;
EditText Description;
EditText Address;
EditText Date;
EditText Time;
EditText Name;
EditText Email;
EditText Phone;
//-----------------------CONSTANTS---------------------->
private static final int NUM_PAGES = 5;
private static final int CAMERA_VALUE = 301;
//----------------------IMAGE DIRECTORY----------------->
String root;
String imageFolderPath;
String imageName;
Uri fileUri;
ArrayList<Uri> fileUris = new ArrayList<>();
ArrayList<String> filepaths;
ArrayList<String> photoPaths;
List<String> Images = new ArrayList<>();
//----------------------FRAGMENTS----------------------->
SplashFragment splashFragment = new SplashFragment();
DescFragment descFragment = new DescFragment();
InfoFragment infoFragment = new InfoFragment();
ChooserFragment chooserFragment = new ChooserFragment();
SuccessFragment successFragment = new SuccessFragment();
//-------------------DATABASE HANDLER------------------->
DatabaseHandler db = new DatabaseHandler(this);
//---------------------DIALOGS-------------------------->
Dialog infoDialog;
Dialog languageDialog;
//-----------------SHARED PREFS------------------------->
SharedPreferences prefs = null;
//--------------IMAGEVIEW PREVIEWS---------------------->
ArrayList<ImageView> img = new ArrayList<>();
//-----------------COUNTERS----------------------------->
private static int image_counter = 0;
//----------VIEWPAGER AND VIEWPAGER ADAPTER------------->
private ViewPager mPager;
private PagerAdapter mPagerAdapter;
TextInputLayout description_layout;
TextInputLayout spinner_layout;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//-------------CHECK FOR PERMISSIONS---------------->
if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED)
{
ActivityCompat.requestPermissions(this, new String[] { Manifest.permission.INTERNET, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CAMERA}, 0);
}
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
findViewById(R.id.mainLayout).requestFocus();
mPager = (ViewPager) findViewById(R.id.pager);
mPagerAdapter = new ScreenSlidePagerAdapter(getSupportFragmentManager());
mPager.setAdapter(mPagerAdapter);
prefs = getSharedPreferences("co.milingona.socialactivist", MODE_PRIVATE);
selectLanguge(prefs.getString("language","sq"), false);
if(prefs.getBoolean("firstTimeRunning",true))
{
createShortcut();
prefs.edit().putBoolean("firstTimeRunning",false).commit();
}
}
@Override
protected void onResume()
{
super.onResume();
}
private void restartActivity()
{
Intent intent = getIntent();
finish();
startActivity(intent);
}
private void selectLanguge(String language, boolean restart)
{
prefs.edit().putString("language", language).commit();
String languageToLoad = language; // your language
Locale locale = new Locale(languageToLoad);
Locale.setDefault(locale);
Configuration config = new Configuration();
config.setLocale(locale);
getBaseContext().getResources().updateConfiguration(config,
getBaseContext().getResources().getDisplayMetrics());
if( restart == true ) {
restartActivity();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public void onBackPressed() {
if (mPager.getCurrentItem() == 0) {
super.onBackPressed();
}
else if(mPager.getCurrentItem() == 4)
{
restartActivity();
} else {
mPager.setCurrentItem(mPager.getCurrentItem() - 1);
}
}
public void splash_raporto(View view)
{
mPager.setCurrentItem(mPager.getCurrentItem() + 1);
}
public void desc_prev(View view)
{
if (view != null) {
InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
mPager.setCurrentItem(mPager.getCurrentItem() - 1);
}
public void desc_next(View view)
{
description_layout= (TextInputLayout) findViewById(R.id.description_layout);
spinner_layout= (TextInputLayout) findViewById(R.id.spinner_layout);
boolean continuePager = true;
Category = (Spinner)findViewById(R.id.category);
Description = (EditText)findViewById(R.id.description);
if(Description.getText().toString().trim().length() == 0)
{
description_layout.setError(getText(R.string.description));
continuePager=false;
} else {
description_layout.setErrorEnabled(false);
}
if(Category.getSelectedItem().toString().trim() == "Zgjidhni Kategorinë")
{
spinner_layout.setError(getText(R.string.category));
continuePager=false;
}
if(continuePager == true)
{
mPager.setCurrentItem(mPager.getCurrentItem()+1);
if (view != null) {
InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
}
}
public void info_prev(View view)
{
mPager.setCurrentItem(mPager.getCurrentItem()-1);
}
public void info_next(View view)
{
Address = (EditText)findViewById(R.id.address);
this.Date = (EditText)findViewById(R.id.date);
Time = (EditText)findViewById(R.id.time);
Name = (EditText)findViewById(R.id.name);
Email = (EditText)findViewById(R.id.email);
Phone = (EditText)findViewById(R.id.phone);
if(Email.getText().toString().trim().length()!=0)
{
if(isValidEmail(Email.getText().toString()))
{
mPager.setCurrentItem(mPager.getCurrentItem()+1);
}
else{
Email.setBackground(getResources().getDrawable(R.drawable.border_bottom_red));
}
}
else {
mPager.setCurrentItem(mPager.getCurrentItem() + 1);
Email.setBackground(getResources().getDrawable(R.drawable.border_bottom_white));
}
if (view != null) {
InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
}
public void choose_dergo(View view)
{
mPager.setCurrentItem(mPager.getCurrentItem()+1);
for (Uri uri: fileUris) {
Images.add(uri.toString());
}
db.addReport(new Report(Category.getSelectedItem().toString(),Description.getText().toString(),"Mitrovice", Address.getText().toString(),this.Date.getText().toString() + " " + Time.getText().toString(), Name.getText().toString(), Email.getText().toString(), Phone.getText().toString(), Images.toArray(new String[Images.size()])));
if(CheckConnectivityService.running==false)
{
Intent stickyService=new Intent(this, CheckConnectivityService.class);
startService(stickyService);
CheckConnectivityService.running=true;
}
}
public void camera_intent(View view)
{
if(image_counter<5)
{
root = Environment.getExternalStorageDirectory()
+ "/SocialAcitivist";
imageFolderPath = root + "/Images";
File imagesFolder = new File(imageFolderPath);
imagesFolder.mkdirs();
Date d = new Date();
CharSequence s = DateFormat.format("hh-mm-ss", d.getTime());
imageName = "img-" + s + ".jpg";
File image = new File(imageFolderPath, imageName);
fileUri = Uri.fromFile(image);
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
startActivityForResult(takePictureIntent, CAMERA_VALUE);
}
else{
Toast.makeText(this,"First delete some pictures below",Toast.LENGTH_SHORT).show();
}
}
public void gallery_intent(View view)
{
FilePickerBuilder.getInstance().setMaxCount(5-image_counter)
.setSelectedFiles(filepaths)
.setActivityTheme(R.style.AppTheme)
.pickPhoto(this);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == CAMERA_VALUE) {
fileUris.add(fileUri);
image_counter++;
}
if (requestCode == FilePickerConst.REQUEST_CODE_PHOTO && resultCode == RESULT_OK && data != null)
{
photoPaths = new ArrayList<>();
photoPaths.addAll(data.getStringArrayListExtra(FilePickerConst.KEY_SELECTED_PHOTOS));
for (String photopath : photoPaths)
{
fileUris.add(Uri.fromFile(new File(photopath)));
image_counter++;
}
}
img.add(0, (ImageView)findViewById(R.id.prev1));
img.add(1, (ImageView)findViewById(R.id.prev2));
img.add(2, (ImageView)findViewById(R.id.prev3));
img.add(3, (ImageView)findViewById(R.id.prev4));
img.add(4, (ImageView)findViewById(R.id.prev5));
int img_counter=0;
for(Uri uri:fileUris)
{
img.get(img_counter).setImageURI(uri);
img_counter++;
}
}
public void showTimePickerDialog(View v)
{
DialogFragment newFragment = new TimePickerFragment();
newFragment.show(getSupportFragmentManager(), "timePicker");
}
public void showDatePickerDialog(View v)
{
DialogFragment newFragment = new DatePickerFragment();
newFragment.show(getSupportFragmentManager(), "datePicker");
}
public void OpenInformation(MenuItem item)
{
infoDialog=new Dialog(this,R.style.AppTheme_Dark);
infoDialog.setContentView(R.layout.infromation_layout);
infoDialog.show();
}
public void close_info_dialog(View view)
{
infoDialog.dismiss();
}
public void OpenLanguages(MenuItem item)
{
languageDialog=new Dialog(this, R.style.AppTheme_Dark_Dialog);
languageDialog.setContentView(R.layout.language_layout);
languageDialog.show();
}
public void ChangeLanguage(View view)
{
switch (view.getId())
{
case R.id.sq:
if( prefs.getString("language","en").equalsIgnoreCase("en"))
{
selectLanguge("sq", true);
}
break;
case R.id.en:
if( prefs.getString("language","sq").equalsIgnoreCase("sq"))
{
selectLanguge("en", true);
}
break;
}
languageDialog.dismiss();
}
public void removeItem(View view)
{
int img_counter=0;
try{
switch (view.getId())
{
case R.id.prev1:
fileUris.remove(0);
for(Uri uri:fileUris)
{
img.get(img_counter).setImageURI(uri);
img_counter++;
}
img.get(img_counter).setImageURI(null);
break;
case R.id.prev2:
fileUris.remove(1);
for(Uri uri:fileUris)
{
img.get(img_counter).setImageURI(uri);
img_counter++;
}
img.get(img_counter).setImageURI(null);
break;
case R.id.prev3:
fileUris.remove(2);
for(Uri uri:fileUris)
{
img.get(img_counter).setImageURI(uri);
img_counter++;
}
img.get(img_counter).setImageURI(null);
break;
case R.id.prev4:
fileUris.remove(3);
for(Uri uri:fileUris)
{
img.get(img_counter).setImageURI(uri);
img_counter++;
}
img.get(img_counter).setImageURI(null);
break;
case R.id.prev5:
fileUris.remove(4);
for(Uri uri:fileUris)
{
img.get(img_counter).setImageURI(uri);
img_counter++;
}
img.get(img_counter).setImageURI(null);
break;
}
image_counter--;
}
catch(Exception e){}
}
public void openURL(View view) {
String url;
switch (view.getId())
{
case R.id.facebook: url="https://www.facebook.com";
break;
case R.id.twitter: url="https://www.twitter.com";
break;
case R.id.wordpress: url="https://www.facebook.com";
break;
default: url="https://www.facebook.com";
break;
}
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);
}
public static class TimePickerFragment extends DialogFragment
implements TimePickerDialog.OnTimeSetListener
{
@Override
public Dialog onCreateDialog(Bundle savedInstanceState)
{
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
return new TimePickerDialog(getActivity(), R.style.AppTheme_Dark_Dialog, this, hour, minute,
DateFormat.is24HourFormat(getActivity()));
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute)
{
EditText editTime=(EditText)getActivity().findViewById(R.id.time);
editTime.setText(hourOfDay+":"+minute);
}
}
public static class DatePickerFragment extends DialogFragment
implements DatePickerDialog.OnDateSetListener
{
@Override
public Dialog onCreateDialog(Bundle savedInstanceState)
{
final Calendar c = Calendar.getInstance();
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH);
int day = c.get(Calendar.DAY_OF_MONTH);
DatePickerDialog dialog = new DatePickerDialog(getActivity(), R.style.AppTheme_Dark_Dialog, this, year, month, day);
dialog.getDatePicker().setMaxDate(new Date().getTime());
return dialog;
}
public void onDateSet(DatePicker view, int year, int month, int day)
{
EditText editDate=(EditText)getActivity().findViewById(R.id.date);
editDate.setText(year+"-"+month+"-"+day);
}
}
private boolean isValidEmail(String email)
{
String EMAIL_PATTERN = "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"
+ "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
Pattern pattern = Pattern.compile(EMAIL_PATTERN);
Matcher matcher = pattern.matcher(email);
return matcher.matches();
}
private class ScreenSlidePagerAdapter extends FragmentStatePagerAdapter
{
public ScreenSlidePagerAdapter(FragmentManager fm)
{
super(fm);
}
@Override
public Fragment getItem(int position)
{
switch (position)
{
case 0: return splashFragment;
case 1: return descFragment;
case 2: return infoFragment;
case 3: return chooserFragment;
case 4: return successFragment;
default: return splashFragment;
}
}
@Override
public int getCount()
{
return NUM_PAGES;
}
}
private void createShortcut()
{
final Intent shortcutIntent = new Intent(this, MainActivity.class);
final Intent intent = new Intent();
intent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
intent.putExtra(Intent.EXTRA_SHORTCUT_NAME, getString(R.string.app_name));
intent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource.fromContext(this, R.mipmap.ic_launcher));
intent.setAction("com.android.launcher.action.INSTALL_SHORTCUT");
sendBroadcast(intent);
}
}
然后我得到了服务班
public final class CheckConnectivityService extends IntentService {
Context context = this;
NetworkConnectivityCheck networkConnectivityCheck = new NetworkConnectivityCheck();
public Thread backgroundThread;
public static boolean running = false;
public static boolean stop = false;
public static Intent _intent;
public CheckConnectivityService() {
super("S");
}
@Override
protected void onHandleIntent(Intent intent) {
_intent=intent;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
_intent=intent;
networkConnectivityCheck.register(context);
this.backgroundThread.start();
running = false;
return START_STICKY;
}
@Override
public void onDestroy() {
networkConnectivityCheck.unregister(context);
backgroundThread.interrupt();
}
@Override
public void onCreate() {
this.backgroundThread = new Thread(myTask);
}
private Runnable myTask = new Runnable() {
public void run() {
while (running == true) {
if (stop == true) {
stop = false;
stopSelf();
}
}
}
};
}
我的第三堂课,如果可以的话,我检查互联网是否可用,然后上传表格并停止服务
public class NetworkConnectivityCheck {
public boolean internetAvailable = false;
private BroadcastReceiver networkChangeReceiver;
List<Report> reports;
NetworkConnectivityCheck(){
this.networkChangeReceiver = new BroadcastReceiver()
{
@Override
public void onReceive(Context context, Intent intent) {
int networkState = NetworkUtil.getConnectionStatus(context);
DatabaseHandler db=new DatabaseHandler(context);
if(networkState == NetworkUtil.NOT_CONNECTED){
internetAvailable = false;
} else if(networkState == NetworkUtil.MOBILE){
internetAvailable = true;
//MainActivity.tvStatus.setText("ONLINE"); // you do something here.
} else if(networkState == NetworkUtil.WIFI){
internetAvailable = true;
if(db.getReportsCount()!=0){
reports=db.getAllReports();
for(Report report : reports){
Upload upload=new Upload(report);
Thread doInBackground = new Thread(upload);
doInBackground.start();
}
db.deleteAll();
CheckConnectivityService.running=true;
CheckConnectivityService.stop=true;
}
}
}
};
}
public void register(Context context)
{
context.registerReceiver(networkChangeReceiver, new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
}
public void unregister(Context context)
{
context.unregisterReceiver(networkChangeReceiver);
}
public class Upload implements Runnable
{
Report report;
public Upload(Report _report)
{
report=_report;
}
@Override
public void run() {
try {
MediaType MEDIA_TYPE_JPEG = MediaType.parse("image/jpeg");
OkHttpClient client = new OkHttpClient.Builder()
.connectTimeout(30, TimeUnit.SECONDS)
.writeTimeout(120, TimeUnit.SECONDS)
.readTimeout(20, TimeUnit.SECONDS)
.build();
MultipartBody.Builder mRequestBody = new MultipartBody.Builder().setType(MultipartBody.FORM);
mRequestBody.addFormDataPart("category", report.getCategory());
mRequestBody.addFormDataPart("description", report.getDescription());
mRequestBody.addFormDataPart("city", report.getCity());
mRequestBody.addFormDataPart("address", report.getAddress());
mRequestBody.addFormDataPart("datetime", report.getDateTime());
mRequestBody.addFormDataPart("name", report.getName());
mRequestBody.addFormDataPart("email", report.getEmail());
mRequestBody.addFormDataPart("phone", report.getPhone());
if(report.getImages()[0].trim().length()!=0) {
ArrayList<Uri> fileUris = new ArrayList<>();
for (String uri : report.getImages())
{
fileUris.add(Uri.parse(uri));
}
for (Uri FileUri : fileUris)
{
File file = new File(FileUri.getPath());
RequestBody imageBody = RequestBody.create(MEDIA_TYPE_JPEG, file);
mRequestBody.addFormDataPart("images[]", FileUri.getLastPathSegment(), imageBody);
}
}
RequestBody requestBody = mRequestBody.build();
Request request = new Request.Builder()
.addHeader("Content-Type","text/json; Charset=UTF-8")
.header("Authorization", "Basic bWlsaW5nb25hOlN0")
.url("http://LINK.com")
.post(requestBody)
.build();
Response response = client.newCall(request).execute();
} catch (Exception e)
{
e.printStackTrace();
}
Thread.currentThread().interrupt();
return;
}
}
}
这是NetworkUtil类,以防您想进一步了解它
public class NetworkUtil
{
public static final int NOT_CONNECTED = 0;
public static final int WIFI = 1;
public static final int MOBILE = 2;
public static int getConnectionStatus(Context context)
{
ConnectivityManager connectivityManager =
(ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
if(networkInfo != null)
{
if(networkInfo.getType() == ConnectivityManager.TYPE_WIFI)
{
return WIFI;
}
if(networkInfo.getType() == ConnectivityManager.TYPE_MOBILE)
{
return MOBILE;
}
}
return NOT_CONNECTED;
}
}
您可以通过某种方式注册一个BroadcastReceiver,它将获得连接的意图。 无需实现这种逻辑。
在应用接收器中使用以下过滤器:
<intent-filter>
<action android:name="android.net.wifi.WIFI_STATE_CHANGED"/>
<action android:name="android.net.wifi.STATE_CHANGE"/>
</intent-filter>
按照下面的帖子:
wifi或3g网络状态更改时的BroadcastReceiver
希望能帮助到你..
您可以使用意向服务上载您的数据,这将从专用的网络更改广播接收器中调用,甚至可能单击提交按钮也将调用它。
该服务将类似于:
public class UploadService extends IntentService {
@Override
protected void onHandleIntent(Intent workIntent) {
int networkState = NetworkUtil.getConnectionStatus(context);
DatabaseHandler db=new DatabaseHandler(context);
if(networkState == NetworkUtil.NOT_CONNECTED){
internetAvailable = false;
} else if(networkState == NetworkUtil.MOBILE){
internetAvailable = true;
//MainActivity.tvStatus.setText("ONLINE"); // you do something here.
} else if(networkState == NetworkUtil.WIFI){
internetAvailable = true;
if(db.getReportsCount()!=0){
reports=db.getAllReports();
for(Report report : reports){
Upload upload=new Upload(report);
Thread doInBackground = new Thread(upload);
doInBackground.start();
}
db.deleteAll();
}
}
}
public class Upload implements Runnable {
Report report;
public Upload(Report _report)
{
report=_report;
}
@Override
public void run() {
try {
MediaType MEDIA_TYPE_JPEG = MediaType.parse("image/jpeg");
OkHttpClient client = new OkHttpClient.Builder()
.connectTimeout(30, TimeUnit.SECONDS)
.writeTimeout(120, TimeUnit.SECONDS)
.readTimeout(20, TimeUnit.SECONDS)
.build();
MultipartBody.Builder mRequestBody = new MultipartBody.Builder().setType(MultipartBody.FORM);
mRequestBody.addFormDataPart("category", report.getCategory());
mRequestBody.addFormDataPart("description", report.getDescription());
mRequestBody.addFormDataPart("city", report.getCity());
mRequestBody.addFormDataPart("address", report.getAddress());
mRequestBody.addFormDataPart("datetime", report.getDateTime());
mRequestBody.addFormDataPart("name", report.getName());
mRequestBody.addFormDataPart("email", report.getEmail());
mRequestBody.addFormDataPart("phone", report.getPhone());
if(report.getImages()[0].trim().length()!=0) {
ArrayList<Uri> fileUris = new ArrayList<>();
for (String uri : report.getImages())
{
fileUris.add(Uri.parse(uri));
}
for (Uri FileUri : fileUris)
{
File file = new File(FileUri.getPath());
RequestBody imageBody = RequestBody.create(MEDIA_TYPE_JPEG, file);
mRequestBody.addFormDataPart("images[]", FileUri.getLastPathSegment(), imageBody);
}
}
RequestBody requestBody = mRequestBody.build();
Request request = new Request.Builder()
.addHeader("Content-Type","text/json; Charset=UTF-8")
.header("Authorization", "Basic bWlsaW5nb25hOlN0")
.url("http://LINK.com")
.post(requestBody)
.build();
Response response = client.newCall(request).execute();
} catch (Exception e)
{
e.printStackTrace();
}
Thread.currentThread().interrupt();
return;
}
}
}
您可以在此处参考此官方文档: 创建后台服务
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