Will the expansion extends view of how to trigger an event in the program's reference to its?

posts by itakeblue on 2013-12-13 10:13:47 Edit

I have an extended edittext, as follows:

test.class

 public class test extends EditText {

public test (Context context, AttributeSet attrs) 
{
super (context, attrs); 
} 

@ Override 
public boolean onKeyPreIme (int keyCode, KeyEvent event) 
{
if (event.getKeyCode () == android.view.KeyEvent.KEYCODE_BACK) {
/ / To do something 
} 
return super.onKeyPreIme (keyCode, event); 
} 
} 

OnKeyPreIme which used to precede the soft keyboard input back to capture the key, then use the following procedure:

touchpad.class

 private test editText1; 

@ Override 
public void onCreate (Bundle savedInstanceState) {
editText1 = (test) findViewById (R.id.editText1); 
} 
public void back_pressed () {
/ / Some code 
} 

Now I want to know is how to click the back button this action from test.class onKeyPreIme () reached touchpad.class and trigger back_pressed (), thank you!
              


Reply:
upupup .........
Reply:
You wear a touchpad this activity you edittext, call its methods, or pass a handle to textview, to handle calls through
Reply:

The reply was deleted administrator at 2013-12-13 17:50:45

Reply:

reference to the second floor baiyewu19 reply:

you wear a touchpad this activity you edittext, call its methods, or pass a handle to textview, through the handle to call

Can elaborate on that? Thank you!
Reply:

Intent intent = new Intent ();
intent.setAction ("w.w.xxxx");
intent.putExtra ("data", 5555);
sendBroadcast (intent);

/ / -------------------
public class DataReceiver extends BroadcastReceiver {

@ Override
public void onReceive (Context context, Intent intent) {
/ / TODO Auto-generated method stub
double data = intent.getDoubleExtra ("data", 0);
tv.setText ("data is:" + data);

}

}
Reply:
View.OnClickListener
Reply:
You can also use SharedPreferences
Reply:
test

 public class test extends EditText {

public test (Context context, AttributeSet attrs) {
super (context, attrs); 
} 

OnKeyBackPressed keybackpressed = null; 

public void SetOnKeybackPressed (OnKeyBackPressed k) {
keybackpressed = k; 
} 

@ Override 
public boolean onKeyPreIme (int keyCode, KeyEvent event) {
if (event.getKeyCode () == android.view.KeyEvent.KEYCODE_BACK) {
/ / To do something 
if (keybackpressed! = null) 
keybackpressed.back_pressed (); 
} 
return super.onKeyPreIme (keyCode, event); 
} 

public static interface OnKeyBackPressed {
public void back_pressed (); 
} 
} 

touchpad

 editText1.SetOnKeybackPressed (new OnKeyBackPressed () {

@ Override 
public void back_pressed () {
/ / ToDo something 

} 
});