Develop Reference

Android how to show an image for a specific time in a layout and then show the content of layout

I want to know how to show an image which is in my case a gif loading screen to show when opening the layout of web view to give it time to give time to load contents in web view.
Either i should use a timer for the image to load or anything else.
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
Intent i = new Intent(net_fragment_1.this,loadinganimate.class);
startActivity(i);
finish();
}
},1000);
I have tried this code but it is crashing.
Note- i am keeping loadinganimate class in the same package.
But whenver i am keeeping in different package and calling it by full path like com.xyz.xyz.loadinganimate.class
it is just showing this class and not resuming to the original windows after a period of time...

remove handler and add these lines in to your code
if (webView.isShown()){
loadinganimate.setVisibility(View.INVISIBLE);
}

Custom keyboard words suggestion

Is there a way I can change the suggestions the keyboard shows for autocompletion of a word? I want to maintain a separate dictionary in the app and when the user types in the EditText he should be shown suggestions from that dictionary.

For changing the suggestions, you will have to implement your own keyboard. This is not what you want to do I believe.
The simplest option for you is to use AutoCompleteTextView for showing user the suggestions. Looks something like the following:

After reading several posts, I understood it can not be done without implementing my own keyboard. So, I ended up implementing a layout for displaying suggestions over the keyboard.(i.e. at the bottom of the activity view). When the keyboard shows up it automatically comes over the keyboard.
First, I turned off the default suggestions in the EditText using
edittext.setInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
Then for detecting if the keyboard is displaying or not:
myActivityView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
int heightDiff = myActivityView.getRootView().getHeight() - myActivityView.getHeight();
if (heightDiff > 180) {
// if more than 180 then its a keyboard
showSuggestions();
}else{
//keyboard gone...
// hide suggestion layout
}
}
});
I added a 100ms delay so that the keyboard hides its default suggestion layout, in case it is displaying.
private void showSuggestions(){
myActivityView.postDelayed(new Runnable() {
#Override
public void run() {
mySuggestionLayout.setVisibility(View.VISIBLE);
}
}, 100);
}

There is a tutorial on the Android Development website, which explains this. See the link here: http://developer.android.com/guide/topics/search/adding-custom-suggestions.html

Android Swipe Images Intro Screen on First Run

I've been looking around a lot lately but haven't really found much on this.
I'm making my third Android app and I'm looking to implement an intro screen on first run of the app where a series of images are shown explaining the apps functionality and the idea behind it; you can swipe the images left or right and at the last image you get to the app by swiping.
I really like the sort of thing they have done with the CamScanner app but despite my searching I have no idea how to implement it other knowing a little bit about some people referring to Fragments. Any help would be appreciated greatly and since we need better UI on Android, a good answer would help a lot of developers take the cue! :)

create a method to show popup window. show images in a scroll view in that popup. at last image set touch listener to dismiss that popup.
and call that method from onResume method of your Activity like this
protected void onResume(){
super.onResume();
SharedPreferences pref = getSharedPreferences(MyPrefs, MODE_PRIVATE);
boolean b = pref.getBoolean("FirstTime",true);
if(b)
{ new Handler().postDelayed(new Runnable() {
public void run() {
showIntroPopup();
}
}, 100);
}
}
in that popup set "FirstTime" boolean to false in SharedPreferences.

Run multiple performClick() with UI update

button.performClick();
For software demonstration purposes, I want to show the user interface updating after each button performClick(). For example, if the Activity was a calculator I can currently simulate the pressing of buttons [1], [2] and [3] using
btn1.performClick();
btn2.performClick();
btn3.performClick();
However, these updates to the EditText too quickly with no visible pause, i.e. it appears "123" are written to the screen simultaneously. What I want is:-
btn1.performClick() updates UI so people can physically see only button press updated to the EditText before the next button does. Similarly with btn2.performClick() and then btn3.performClick().

You may want to use a library like Robotium, and use Solo.waitForText Method to do what you want.
The problem is that we can not determine in advance the time that it will take to display the text, as it depends on the content of your onClick method.
It's why Robotium may be useful for what you want.

You can either use
Thread.sleep(delay);
or use
handler.postDelayed(Runnable,delay);

Use handler for btn2.performClick() and btn3.performClick() like...
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
// do something after 100ms
btn2.performClick();
}
}, 100);

Animating a toast in android?

Am trying to animate my toast but have been unsuccessful so far. This is what I have in my onCreate():
ImageView image = new ImageView(this);
image.setImageResource(R.drawable.icon);
Animation move = new TranslateAnimation(0,100, 0, 100);
move.setDuration(2000);
move.setFillEnabled(true);
move.setFillAfter(true);
image.startAnimation(move);
Toast toast = new Toast(this);
toast.setView(image);
toast.show();
Have tried placing startAnimation() after displaying the toast, but that doesn't work either.

Toast notifications use a system template to determine how they are displayed. Short of modifying the Android source code, you can not create a special animation for your Toast message.
However, if possible you might be able to create a normal view and use that instead. One common method is to create a new Activity that has a transparent background with your modal toast message animated and displayed however you want.