`Hi everybody, i have a problem with Android OnAnimationEnd. i have two layouts A and B, A is the parent parent layout and contains B in the middle and an ImageView (imv) at the bottom. Now i need to translate imv from its original position into layout B which is at the middle of layout A such that at the end of the animation imv will belong to layout B and not layout A. to achieve this, in OnAnimationEnd, I removed imv from its parent layout and attempted to then add it to layout B. However at the end the animation imv just vanish as soon as it enters layout B. System.out shows that OnAnimationEnd is called and layout childCount also shows that imv is added to layout B, but imv is never vissible in layout B. below is the code, by the way am not an experienced android developer. Thanks in advance.
public class MainActivity extends Activity implements AnimatorListener {
ImageView imv;
RelativeLayout parentL;
RelativeLayout middleL;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imv = (ImageView) findViewById(R.id.imageView1);
imv.setOnClickListener(new MyClick(this));
parentL = (RelativeLayout) findViewById(R.id.rl);
middleL = (RelativeLayout) findViewById(R.id.rll);
}
private class MyClick implements OnClickListener {
MainActivity ma;
public MyClick(MainActivity ma) {
this.ma = ma;
}
#Override
public void onClick(View v) {
ImageView imv = (ImageView) v;
float x = middleL.getX();
float y = middleL.getY();
imv.animate().setListener(ma);
imv.animate().x(x).y(y);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
#Override
public void onAnimationCancel(Animator arg0) {
}
#Override
public void onAnimationEnd(Animator anim) {
System.out.println("onAnimationEnd");
ViewGroup vg = (ViewGroup)imv.getParent();
vg.removeView(imv);
middleL.addView(imv);
System.out.println("layout child count = "+middleL.getChildCount());
}
#Override
public void onAnimationRepeat(Animator arg0) {
}
#Override
public void onAnimationStart(Animator arg0) {
System.out.println("onAnimationStart");
}
}
Try to call invalidate(), it will tell the view it needs to redraw itself
when you define your animation, try using anim.setFillAfter(true);
Related
I am making an app that will has three activities. The user can navigate to a new activity pressing buttons (home, graph, and write). This part works fine, but I only want three activities to be created max. Right now if I push the buttons 10 times I get 10 separate activities. Is there a way to prevent this and have the button call an activity if it has already been created instead of creating a new one each time?
public class MainActivity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button_toGraph = (Button) findViewById(R.id.home_to_graph);
button_toGraph.setOnClickListener(goToSecondListener);
Button button_toWrite = (Button) findViewById(R.id.home_to_write);
button_toWrite.setOnClickListener(goToThirdListener);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
private OnClickListener goToSecondListener = new OnClickListener(){
#Override
public void onClick(View arg0) {
doButton();
}};
private void doButton()
{
startActivity(new Intent(this, GraphScreen.class));
}
private OnClickListener goToThirdListener = new OnClickListener(){
#Override
public void onClick(View v) {
doBacktoThird();
}
private void doBacktoThird() {
startActivity(new Intent(MainActivity.this, WriteScreen.class));
}
};
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
return rootView;
}
}
Any help will be greatly appreciated! Thank you!
create three Boolean Variables.
if suppose button_toGraph is clicked .. make the
Boolean button_toGraph_IsCreated = true;
and when Activity is Finished ( YourActivity.finish ) make it Again false.
make a check on the button by using these variable like
if(button_toGraph_IsCreated) // if the variable is true
{
// do nothing as already activity created
}
else
{
doBacktoThird();
}
if you are using database then it should not be hard to get the values to main activity.
I have a menu and when clicked on a menu, it goes inside another menu.
for example, mainmenu-->click on airport guide --> menu2
but when i am in menu2 and press on the back button, the app is closing instead of going back to mainmenu . i am not able to figure out the problem here. i am new to android development
package com.shashank.sharjahinternationalairport;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
public class MainActivity extends Activity {
ImageButton flightInfoButton;
ImageButton airportGuideButton;
ImageButton visitorInfoButton;
ImageButton saaDcaButton;
ImageButton cargoButton;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
flightInfoButton = (ImageButton) findViewById(R.id.flightInfo);
airportGuideButton = (ImageButton) findViewById(R.id.airportGuide);
visitorInfoButton = (ImageButton) findViewById(R.id.visitorInfo);
saaDcaButton = (ImageButton) findViewById(R.id.saaDca);
cargoButton = (ImageButton) findViewById(R.id.cargo);
airportGuideButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View V){
setContentView(R.layout.airport_guide);
}
});
visitorInfoButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View V){
setContentView(R.layout.visitor_info);
}
});
saaDcaButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View V){
setContentView(R.layout.saa_dca);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
You are using setContentView, so you are just changing the view layout. When you press the backbutton, the Android calls onBackPressed, which the default implementation is to call finnish() method, that closes the activity.
You can override the onBackPressed method to set the other view.
#Override
public void onBackPressed()
{
//setContentView the previous view
}
Hope it helps!
you can always override the onBackPressed method of Activity, you'll have something like this
public class MainActivity extends Activity {
ImageButton flightInfoButton;
ImageButton airportGuideButton;
ImageButton visitorInfoButton;
ImageButton saaDcaButton;
ImageButton cargoButton;
private enum VIEWS {
VIEW_1, VIEW_2, VIEW_3
};
private VIEWS mSelectedView = VIEWS.VIEW_1;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
flightInfoButton = (ImageButton) findViewById(R.id.flightInfo);
airportGuideButton = (ImageButton) findViewById(R.id.airportGuide);
visitorInfoButton = (ImageButton) findViewById(R.id.visitorInfo);
saaDcaButton = (ImageButton) findViewById(R.id.saaDca);
cargoButton = (ImageButton) findViewById(R.id.cargo);
airportGuideButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View V) {
showView1();
}
});
visitorInfoButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View V) {
showView2();
}
});
saaDcaButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View V) {
showView3();
}
});
}
private void showView1() {
setContentView(R.layout.airport_guide);
mSelectedView = VIEWS.VIEW_1;
}
private void showView2() {
setContentView(R.layout.visitor_info);
mSelectedView = VIEWS.VIEW_2;
}
private void showView3() {
setContentView(R.layout.saa_dca);
mSelectedView = VIEWS.VIEW_3;
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public void onBackPressed() {
switch (mSelectedView) {
case VIEW_1:
super.onBackPressed();
break;
case VIEW_2:
showView1();
break;
case VIEW_3:
showView2();
break;
}
}
}
All you is doing that you are changing the Content View of the class MainActivity you need to create sperate classes for your difreent layouts and you can call it by INTENT
This is happennig because you are using only one activity, and on click just changing the content view. Even though this appears like a multi page activity, it is only one screen. Hence onBackPressed() it closes. Yo will have to create different activiies for each of your menu options and start them using Intents on Button Click.
Intent i = new Intent(this, SecondActivity.class);
startActivity(i);
You are using only one activity, if it is many activity mean you can track back to previously loaded activity.
else you must needed only one activity mean please store the layouts in some array, then in the onBackPressed() you can it get LIFO manner
#Override
public void onBackPressed() {
}
I'm trying to implement the Click event for fragments that display images or buttons.
I am able to implement the flip view to get another fragment but I am unable get the click event working on such fragments.
I have tried with android:onClick, even setting clickable to true. I even tried with onClickListener and onTouch but it's not firing for me.
This is the code I have tried.
public class MainActivity extends Activity {
private FlipViewGroup contentView;
public int currentimageindex=0;
private GestureDetector mDetector;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
// hde staitbar otef Andoroid
// could also be usdne lar
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setTitle(R.string.activity_title);
contentView = new FlipViewGroup(this);
contentView.addFlipView(View.inflate(this, R.layout.second_page, null));
contentView.addFlipView(View.inflate(this, R.layout.first_page, null));
setContentView(contentView);
// setContentView(R.layout.second_page);
contentView.startFlipping(); //make the first_page view flipping
ImageView imgFavorite = (ImageView) findViewById(R.id.imageView1);
imgFavorite.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(MainActivity.this,
"The favorite list would appear on clicking this icon",
Toast.LENGTH_LONG).show();
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
}
#Override
protected void onResume() {
super.onResume();
contentView.onResume();
}
#Override
protected void onPause() {
super.onPause();
contentView.onPause();
}
public void onclick(View v){
ImageView imgFavorite = (ImageView) findViewById(R.id.imageView1);
imgFavorite.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(MainActivity.this,
"The favorite list would appear on clicking this icon",
Toast.LENGTH_LONG).show();
}
});
}
}
This is my xml code
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="#android:color/white">
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/imageView5"
android:layout_centerHorizontal="true"
android:layout_marginTop="60dp"
android:src="#drawable/android"
android:clickable="true"
android:onClick="onclick"/>
</RelativeLayout>
Is there some reason a fragment within a flip view doesn't respond to click or touch events, or is there something I'm doing wrong in my code?
As far as i understand, FlipViewGroup is your custom view group implementation.
If that is the case you need onInterceptTouchEvent() see the sample code here.
http://developer.android.com/training/gestures/viewgroup.html
In this is a very simple Activity with an ActionBar containing a single MenuItem "search". I want to set an ActionView to the search button and I use the MenuItem.setActionView(int ResId) to pass the XML layout. inflate a layout that I want to attach to a MenuItem as an Action view.
The button simply starts the exact same Activity. "Don't keep activities" is set in the dev options.
Problem: after a OnClickListener have been set on a widget within the action view, MainActivity is never garbage collected (see MAT below). However if I create a view hierarchy in java (instead of inflating it) it is GC's as it should be.
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Button button = new Button(this);
button.setText("Click");
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(MainActivity.this, MainActivity.class);
startActivity(i);
}
});
setContentView(button);
}
#SuppressLint("NewApi")
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuItem searchIcon = menu.add("search");
searchIcon.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW);
// I set the ActionView here:
searchIcon.setActionView(R.layout.action_search_form);
ViewGroup vg = ((ViewGroup)searchIcon.getActionView());
ImageButton btn = (ImageButton)vg.findViewById(R.id.search_clear_btn);
btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "click", Toast.LENGTH_SHORT).show();
}
return true;
}
}
The number of objects corresponds exactly to the # of times I clicked on the button.
if I remove the onCreateOptionsMenu() block, the # of objects is not exactly 1 but always below 10.
I was following tutorials on how to make Tabs using fragments.
each tab has this in the java files:
public class rdfri extends Fragment {
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if (container == null) {
// We have different layouts, and in one of them this
// fragment's containing frame doesn't exist. The fragment
// may still be created from its saved state, but there is
// no reason to try to create its view hierarchy because it
// won't be displayed. Note this is not needed -- we could
// just run the code below, where we would create and return
// the view hierarchy; it would just never be used.
return null;
}
return (LinearLayout)inflater.inflate(R.layout.rdfri, container, false);
}
}
I would like to try and get a imageButton in the fragment. I figured image bottons work with this code:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.rdmon);
ImageButton rainbowbook = (ImageButton) findViewById(R.id.imageButton1);
rainbowbook.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent myIntent = Intent(rdmon.this, RainbowBookActivity.class);
rdmon.this.startActivity(myIntent);
}
});
}
So how would I go about getting the button code in the fragment code?
Thanks.
Put the button code in the overridden onActivityCreated method in your fragment class.
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
ImageButton rainbowbook = (ImageButton) findViewById(R.id.imageButton1);
rainbowbook.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent myIntent = Intent(rdmon.this, RainbowBookActivity.class);
rdmon.this.startActivity(myIntent);
}
});
}
This assumes of course that your imagebutton is contained in your fragment layout.