Develop Reference

Ripple effect activated on backpressed

as title says, how to make my ripple effect on ImageButton (ripple effect assigned to this ImageButton) activated on backpressed() without back to the previous activity

with a bit of logic you could achieve that easily. what i thought of is that you have a method lets call it doSomething();
boolean onBackpressed = false;
private void doSomthing() {
if(onBackpressed){
finish();
}else{
// do anything else that the button wants to do;
}
}
now onBackpressed() you could do this
#Override public void onBackpressed() {
onBackpressed = true;
myImageButton.performClick(); // myImageButton.callOnClick()
}
P.S: that i didn't call super.onBackpressed(); so we can control the back press without existing the app.
of course your imageButton click listener calls doSomething() method.

Finished activity automatically reopens

I have a problem in a very simple application.
I have a main activity, and on button click I open a second activity:
newEntryButton.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View view, MotionEvent motionEvent) {
Intent intent = new Intent(MainActivity.this, NewSpendingActivity.class);
MainActivity.this.startActivity(intent);
return true;
}
});
When I close this activity (for example by tapping the back button) or by calling finish() the view loads once again. It only closes if I tap the back button again. What may be the cause of this?

It's probably because you're using an OnTouchListener, which triggers on press, move and release. Try using an OnClickListener instead.

This should not give you problems:
newEntryButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent activityChangeIntent = new Intent(MainActivity.this,NewSpendingActivity.class);
MainActivity.this.startActivity(activityChangeIntent);
}
});

Android Back Button to specific activity

When I click the back button Android goes to the previous activity.
Is it possible to set for every activity a custom (back) activity
or to set the back button to the home menue of the app?
Help or hints would be great :)

You will have to override onBackPressed() from your activity:
#Override
public void onBackPressed()
{
super.onBackPressed();
startActivity(new Intent(ThisActivity.this, NextActivity.class));
finish();
}

public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
Intent i = new Intent(this.class, yourcustomclass);
startActivity(i);
finish();
}
}

Yes it's possible, just add this method to your activity:
public void onBackPressed() {
//Do the stuff you want on backbutton pressed.
}

Yes you should #override the onBackPressed() function and create an Itent to go wherever you want.

You can override the
#Override
public void onBackPressed(){
}

If you need to go back what ever activity, when click on ActionBar back arrow(Home). overide onSupportNavigateUp()
#Override
public boolean onSupportNavigateUp() {
//onBackPressed(); //this will be go to parent activity
//******************//
// Your intent here //
//******************//
return true;
}

How other buttons disable when I press the button?

I have a few imageview which have onclicklistener. If I press one (not release), I can press click others or I can click them same time. I do not want it. Everytime when I press one of them others should be disable to click.
imageview1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
getMethod();
}
});
I guess, I tried setClickable(false); but it did not work properly, if I clicked one button after that it worked.

Try using onTouchListener instead of onClickListener and calling setEnabled(false); on the other views there. Here's a fairly basic example:
OnTouchListener onTouchListener = new OnTouchListener() {
#Override
public boolean onTouch(View view, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
imageView1.setEnabled(false);
imageView2.setEnabled(false);
}
return true;
}
};
And then apply it to the image views with:
imageView1.setOnTouchListener(onTouchListener);
That should work. One thing is, though, that while you'll only be able to push one button no matter what, you also won't be able to push anything after you let go - but, you can fix that by adding some logic to see if the view actually got clicked or if the user touched it, changed their mind and slid away. The (event.getAction() == MotionEvent.ACTION_DOWN) check will be true even if the user is just scrolling.

//button on which press u want to disable others
button1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
button2.setEnabled(false); //button which u want to disable
button3.setEnabled(false); //button which u want to disable
}
});
//update fixed a spelling error

try to disable the button and
button.setEnable(false);
enable the button
button1.setEnable(true);

Android Back Button Utilization Inside ActivityGroup

I am developing an application using TabHost. I am using android default back button to move back to previous activity from current activity by overriding onBackPressed() method inside ActivityGroup of each tab.
Now , the problem is , in one of my activity i have an EditText which get focused when the activity starts. Then , if i press back , it does not go to previous activity , instead it closes the application. By searching about the problem on internet what i have found is that when the EditText get focused which is a child view of activity's view , the activity loss focus and then if back button is pressed , for lack of focus on the current activity it closes the application. Still i am little bit confused or can be say not clear about the problem.
So, any how , i have managed to set and remove focus over EditText on run time using code. But still now , as the EditText does not have focus , if the back button is pressed , it closes the application. I am really confused what's actually going on. So , if anyone have any idea or solution about the problem , please help on the issue. I will appreciate that very much. Thanks.

You can override this behavior by adding Key Listener to your EditText. Try this out,
name_edit.setOnKeyListener(new OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN
&& event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
Log.i("Back event Trigered", "Back event");
activitygroup.back();
}
return false;
}
});

try this..
#Override
public void onBackPressed() {
onKeyDown(KeyEvent.KEYCODE_BACK, new KeyEvent(KeyEvent.ACTION_DOWN,KeyEvent.KEYCODE_BACK));
super.onBackPressed();
}

try this
public void onBackPressed() {
startActivity(new Intent(currentActivity.this, previousActivity.class));
finish();
}