Question

我有一个字符串想要传递给绑定到此服务的主要活动。数据似乎并没有传递到另一端，我已经尝试了多种技术。任何帮助，将不胜感激这是服务

public int onStartCommand(Intent intent, int flags, int startId) {
        String thename=intent.getStringExtra("stockName");
        String TAG="hello";
        Intent putIntent=new Intent(LocalService.this,Binding.class);
        if(thename.equals("AMZN"))
        {
            //Toast.makeText(this, "The price is $1,755.25", Toast.LENGTH_LONG).show();
            putIntent.putExtra("theName","WORKED");
        }

这是活动本身

@Override

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_binding);
    final Button priceButton=findViewById(R.id.priceButton);
    final EditText stockPrice=findViewById(R.id.stockText);

    final Intent theIntent=new Intent(Binding.this,LocalService.class);
    priceButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String stockText=stockPrice.getText().toString();
            theIntent.putExtra("stockName",stockText);
            startService(theIntent);
            Intent getit=getIntent();
            String name=getit.getParcelableExtra("theName");
            Toast.makeText(getApplicationContext(), name, Toast.LENGTH_LONG).show();

        }
    });
}

Answer 1

我试图在您的代码中添加一个BroadcastReceiver（不是很漂亮），我评论了添加的行。我可能错过了一些东西或犯了一个错误。随时询问您是否遇到任何错误或阅读https://developer.android.com/reference/android/content/BroadcastReceiver

祝你好运！

您的服务

         public int onStartCommand(Intent intent, int flags, int startId) {

       //String for the BroadcastReceiver to listen for.                
       public static final String BROADCAST_STRING = "your.package.or.whatever.you.want.sending";

                    String thename=intent.getStringExtra("stockName");
                    String TAG="hello";
                    Intent putIntent=new Intent(BROADCAST_STRING);
                    if(thename.equals("AMZN"))
                {
                    //Toast.makeText(this, "The price is $1,755.25", Toast.LENGTH_LONG).show();
                putIntent.putExtra("theName","WORKED");
            }

            //Broadcast sent and  picked up in Activity.
            sendBroadcast(putIntent);

您的活动

@Override

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_binding);
    final Button priceButton=findViewById(R.id.priceButton);
    final EditText stockPrice=findViewById(R.id.stockText);
    private BroadcastReceiver broadcastReceiver;

    final Intent theIntent=new Intent(Binding.this,LocalService.class);

    //Adds a filter to the broadcastReceiver, what it should listen for
    IntentFilter filter = new IntentFilter();
    filter.addAction("your.package.or.whatever.you.want.sending");

    //Triggered when a broadcast is  picked up
    broadcastReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {

          //Get intent and do what you want
    };

    // Register the broadcastReceiver and filter
    this.registerReceiver(broadcastReceiver, filter);


    priceButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            String stockText=stockPrice.getText().toString();
            theIntent.putExtra("stockName",stockText);
            startService(theIntent);
            Intent getit=getIntent();
            String name=getit.getParcelableExtra("theName");
            Toast.makeText(getApplicationContext(), name, Toast.LENGTH_LONG).show();

        }
    });
}

尝试将数据从服务传递到活动

1 个答案: