android

Question

不确定这是否有效，但我正在尝试从 CustomerCall activity.

向 RiderHome activity 发送消息

一旦 driver 选择取消。需要向 RiderHome activity 说 "The Driver has cancelled the request"

这可以做到吗？

CustomerCall

btnCancel = (Button)findViewById(R.id.btnDecline);
    btnCancel.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

                cancelBooking();
        }
    });

}

private void cancelBooking() {

    Intent intent = new Intent(getBaseContext(), RiderHome.class);
    String cancel = "cancel"
    intent.putExtra("cancel", cancel);
    startActivity(intent);

    Toast.makeText(CustomerCall.this, "The Driver has cancelled 
    the request", Toast.LENGTH_LONG).show();
}

骑士之家

public class RiderHome extends AppCompatActivity
    implements NavigationView.OnNavigationItemSelectedListener, OnMapReadyCallback,
    GoogleApiClient.ConnectionCallbacks,
    GoogleApiClient.OnConnectionFailedListener,
    LocationListener {


   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_home);

   }

}

Answer 1

而不是（用 activity 吐司 - 当 activity 完成时 Toast 的生命就死了）

Toast.makeText(CustomerCall.this, "The Driver has cancelled 
the request", Toast.LENGTH_LONG).show();

到（使用上下文！！它将存活）

Toast.makeText(getBaseContext(), "The Driver has cancelled 
the request", Toast.LENGTH_LONG).show();

Answer 2

你可以这样做-:

private void cancelBooking() {

    Intent intent = new Intent(getBaseContext(), RiderHome.class);
    String cancel = "cancel"
    intent.putExtra("user_cancelled",cancel);
    startActivity(intent);

    Toast.makeText(CustomerCall.this, "The Driver has cancelled 
    the request", Toast.LENGTH_LONG).show();
}

在此传递一个字符串值，指示驱动程序取消了请求

在 RiderHome Activity 中，您可以通过以下方式检查您是否获得了该值：

Intent intent=getIntent();
intent.getExtras();

if(intent.hasExtra("user_cancelled"))
{

    You can print your toast here.

}

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