Android callback
July 20, 2012 · 0 Comments
// The callback interface
interface MyCallback {
void callbackCall();
}
// The class that takes the callback
class Worker {
MyCallback callback;
void onEvent() {
callback.callbackCall();
}
}
// Option 1:
class Callback implements MyCallback {
void callback() {
// callback code goes here
}
}
worker.callback = new Callback();
// Option 2:
worker.callback = new MyCallback() {
void callback() {
// callback code goes here
}
};
sample code: Tutorial_CallbackActivity
package com.poweko.Tutorial_Callback;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
public class Tutorial_CallbackActivity extends Activity implements MyCallback {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
test t_test=new test();
// solution 1
t_test.callback = new Tutorial_CallbackActivity(); //<--
t_test.onEvent();
}
@Override
public void callbackCall() {
Log.d("callback", "I get it");
}
}
package com.poweko.Tutorial_Callback;
interface MyCallback {
void callbackCall();
}
package com.poweko.Tutorial_Callback;
public class test {
MyCallback callback;
void onEvent() {
callback.callbackCall();
}
}
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