如何從活動中提取Android服務中的字符串值？

Question

如何從活動中提取Android服務中的字符串值？

我的活動有一個編輯文本，輸入的字符串必須在我的服務中接收。

TempLaunch.java：

公共類TempLaunch擴展了活動{

  private EditText text;
  private Button okbtn;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.templaunch);

    addListenerOnButton();

  }

  public void addListenerOnButton() {

    text = (EditText) findViewById(R.id.edittext_newid);    
    okbtn = (Button) findViewById(R.id.button_newid);


    okbtn.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

          Toast.makeText(TempLaunch.this, "In Temp launch class ",Toast.LENGTH_SHORT).show();
          Toast.makeText(TempLaunch.this, text.getText(),Toast.LENGTH_SHORT).show();


            Intent intent = new Intent(getApplicationContext(), MainActivity.class);



            Toast.makeText(TempLaunch.this, "I am in Main activity class ",Toast.LENGTH_SHORT).show();
            startActivity(intent);

        }

    });


    Intent i = new Intent(this, MusicService.class);

    i.putExtra("DD_URL", text.getText().toString());

    //startActivity(i);



  }
}

MusicService.java公共類MusicService擴展Service {

@Override
    public void onCreate() {
        super.onCreate();

        String url = null;



            Intent intent = getIntent();
            String id = intent.getStringExtra("DD_URL");

            System.out.println("Rosh :" + id);
            Toast.makeText(MusicService.this, "I am in Service:"+ id,Toast.LENGTH_SHORT).show();

...

請在這方面幫助我。

提前致謝

Answer 1

您可以使用sendBroadcast（intent）; 這將從您的活動A中廣播EditText。

然后，您需要在Service類中調用onReceive（Context context，Intent intent） 。 當BroadcastReceiver接收到Intent廣播時，將調用此方法，在這種情況下，將從Activity A發送該方法。

   private final BroadcastReceiver receiver = new BroadcastReceiver() 
   {
        @Override
        public void onReceive(Context context, Intent intent) 
        {
            // Do something
        }
   };

    //Register your receiver in onResume:

    @Override
    protected void onResume() 
    {
        super.onResume();        
        IntentFilter filter = new IntentFilter();
        filter.addAction("SOME_ACTION");
        registerReceiver(receiver, filter);
    }

   //Unregister the receiver in onPause:

    @Override
    protected void onPause() 
    {
        super.onPause();       
        unregisterReceiver(receiver);
    }