Develop Reference

Button's background isn't displayed

Background isn't displayed. If the button hasn't background, it displayed OK
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="?attr/colorBackgroundFloating"
tools:context=".MainActivity"
tools:layout_editor_absoluteY="25dp">
<Button
android:id="#+id/button_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_weight="1"
android:background="#drawable/my_round_button"
android:onClick="onClick"
android:text="#string/button_1"
android:visibility="visible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
When app button hasn't background, button looks like ractangle
my_round_button
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="ring">
<solid android:color="#FFFFFF" />
</shape>
What's wrong?
Button should looks like ring

A picture is worth a thousand words
So in your case to create a ring shape:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:innerRadius="80dp"
android:shape="ring"
android:thickness="5dp"
android:useLevel="false">
<solid android:color="#FFF" />
<size
android:width="200dp"
android:height="200dp" />
</shape>
You can change innerRadius, thickness, size property based on your UI requirements.

problem is in your shape.
for example you can change your shape to:
<?xml version="1.0" encoding="utf-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:innerRadius="15dp"
android:thickness="10dp"
android:useLevel="false"
android:shape="ring"
>
<solid android:color="#FFFFFF" />
</shape>

I would recommend you to create custom view, which render the view in form of Circle and as per width/height we pass from the layout. It's more dynamic.
I did like the answer suggested by Son Truong but that seems not more generic as we need to hard code the size width/height.
Step 1: Create a theme in style.xml
<declare-styleable name="CircleCompatTextView">
<attr name="cctv_stroke_width" format="dimension" />
<attr name="cctv_background_color" format="color" />
<attr name="cctv_border_color" format="color" />
</declare-styleable>
Step 2: Create a custom view.
public class CircleCompatTextView extends AppCompatTextView {
private final Paint paintCircle = new Paint();
private final Paint paintStroke = new Paint();
private final Resources resources;
private int strokeWidth;
private int bgColor;
private int borderColor;
private int cxCy;
public CircleCompatTextView(Context context, AttributeSet attrs) {
super(context, attrs);
resources = context.getResources();
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CircleCompatTextView);
strokeWidth = a.getDimensionPixelSize(R.styleable.CircleCompatTextView_cctv_stroke_width, 1);
bgColor = a.getColor(R.styleable.CircleCompatTextView_cctv_background_color, resources.getColor(android.R.color.transparent));
borderColor = a.getColor(R.styleable.CircleCompatTextView_cctv_border_color, resources.getColor(android.R.color.background_dark));
a.recycle();
init();
}
private void init() {
paintCircle.setColor(bgColor);
paintCircle.setFlags(Paint.ANTI_ALIAS_FLAG);
paintStroke.setColor(borderColor);
paintStroke.setStyle(Paint.Style.STROKE);
paintStroke.setStrokeWidth(strokeWidth);
paintStroke.setFlags(Paint.ANTI_ALIAS_FLAG);
}
#Override
public void draw(Canvas canvas) {
canvas.drawCircle(cxCy, cxCy, cxCy - strokeWidth / 2, paintStroke);
canvas.drawCircle(cxCy, cxCy, cxCy - strokeWidth / 2, paintCircle);
super.draw(canvas);
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int width = getMeasuredWidth();
int height = getMeasuredHeight();
int size = ((height > width) ? height : width);
cxCy = size / 2;
setMeasuredDimension(size, size);
}
}
Step 3: Usage of custom view
<CircleCompatTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center|center_vertical"
android:padding="16dp"
android:textAlignment="center"
app:cctv_background_color="#android:color/transparent"
app:cctv_border_color="#android:color/background_dark"
app:cctv_stroke_width="2dp" />
Here is the output

Adding ripple effect for View in onClick

Hello I am trying to add a ripple effect onClick method for View, but this one no working. All my items having an ID, but I don't know how to call it
Here is a code.
#Override
public void onClick(View v) {
int[] attrs = new int[]{R.attr.selectableItemBackground};
TypedArray typedArray = getActivity().obtainStyledAttributes(attrs);
int backgroundResource = typedArray.getResourceId(0, 0);
v.setBackgroundResource(backgroundResource);
switch (v.getId()) {
case ACTION_PLAY_ID:
Log.d(MainActivity.TAG, getString(R.string.detail_action_play));
v.setBackgroundResource(backgroundResource);
Intent intent = new Intent(getActivity(), PlayerActivity.class);
intent.putExtra(Video.VIDEO_TAG, videoModel);
startActivity(intent);
break;
case ACTION_BOOKMARK_ID:
if (bookmarked) {
v.setBackgroundResource(backgroundResource);
deleteFromBookmarks();
((ImageView) v).setImageDrawable(res.getDrawable(R.drawable.star_outline));
} else {
v.setBackgroundResource(backgroundResource);
addToBookmarks();
((ImageView) v).setImageDrawable(res.getDrawable(R.drawable.star));
}
break;
case ACTION_REMINDER_ID:
if (!isReminderSet) {
createReminderDialog((ImageView) v);
} else {
cancelReminder(liveTvProgram.getProgramId());
((ImageView) v).setImageDrawable(res.getDrawable(R.drawable.alarm));
}
break;
}
}
For Lubomir
i have something like this but not working too:
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle
savedInstanceState) {
View view = inflater.inflate(R.layout.item_detail, container, false);
ButterKnife.bind(this, view);
View myView = view.findViewById(R.id.actions_container);
int[] attrs = new int[]{R.attr.selectableItemBackground};
TypedArray typedArray = getActivity().obtainStyledAttributes(attrs);
int backgroundResource = typedArray.getResourceId(0, 0);
myView.setBackgroundResource(backgroundResource);
loadImage();
init();
return view;
}
ImageViews(actionbuttons) is creating in java for LinearLayout actions_container
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/header_image"
android:layout_width="250dp"
android:layout_height="250dp"
android:layout_alignParentLeft="true"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp"
android:layout_marginTop="#dimen/detail_image_1_state"
android:elevation="8dp"/>
<RelativeLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="#dimen/detail_bottom_margin"
android:layout_marginTop="#dimen/detail_top_margin"
android:background="#color/primary_color">
<LinearLayout
android:id="#+id/actions_container"
android:layout_width="match_parent"
android:layout_height="#dimen/detail_actions_height"
android:layout_alignParentTop="true"
android:background="#drawable/ripple_effect_image"
android:elevation="2dp"
android:orientation="horizontal"
android:paddingLeft="300dp"
android:paddingStart="300dp"/>
<LinearLayout
android:id="#+id/content_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/actions_container"
android:orientation="vertical"
android:paddingLeft="300dp"
android:paddingStart="300dp">
<TextView
android:id="#+id/title"
style="#style/TextTitleStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="#+id/subtitle"
style="#style/TextSubtitleStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone"/>
<TextView
android:id="#+id/duration"
style="#style/TextSubtitleStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="#+id/season"
style="#style/TextDescriptionStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone"/>
<TextView
android:id="#+id/episode"
style="#style/TextDescriptionStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone"/>
<TextView
android:id="#+id/description"
style="#style/TextDescriptionStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:maxLines="7"/>
</LinearLayout>
<FrameLayout
android:id="#+id/recommended_frame"
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_alignParentBottom="true">
<android.support.v17.leanback.widget.HorizontalGridView
android:id="#+id/recommendation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clipChildren="false"
android:clipToPadding="false"
android:paddingLeft="10dp"
android:paddingRight="10dp"/>
</FrameLayout>
<TextView
android:id="#+id/recommended_text"
style="#style/TextHeaderStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#id/recommended_frame"
android:text="#string/related_programs"/>
</RelativeLayout>
</RelativeLayout>
Also my xml ripple effect file is like:
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="#color/dark_primary_color">
<item>
<color android:color="#color/dark_primary_color" />
</item>
<item android:id="#android:id/mask">
<shape android:shape="rectangle">
<solid android:color="?android:colorAccent" />
</shape>
</item>
</ripple>

Clickable Views
In general, ripple effect for regular buttons will work by default in API 21 and for other touchable views, it can be achieved by specifying
android:background="?android:attr/selectableItemBackground"
In code:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.your_layout);
View myView = findViewById(R.id.myView);
int[] attrs = new int[]{R.attr.selectableItemBackground};
TypedArray typedArray = getActivity().obtainStyledAttributes(attrs);
int backgroundResource = typedArray.getResourceId(0, 0);
myView.setBackgroundResource(backgroundResource);
}

As stated in Lubomir Babev's answer, adding android:background="?android:attr/selectableItemBackground" does the trick.
However, if your view already has a background, you can use the same on the android:foreground attribute instead:
android:background="#color/anyColor"
android:foreground="?android:attr/selectableItemBackground"
android:foreground is only supported by API 23+ though.

create ripple background
view_background.xml
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="#color/blue" >
<item android:drawable="#drawable/view_normal">
</item>
</ripple>
view_noraml.xml //this is how you view appears in normal
<?xml version="1.0" encoding="utf-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<corners
android:radius="#dimen/button_corner"/>
<solid
android:color="#android:color/transparent"/>
<stroke
android:width="0.5dp"
android:color="#color/white"/>
</shape>
now set the view_background to your view
example
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="120dp"
android:foreground="#drawable/view_background"
android:clickable="true"
android:focusable="true"
>
<ImageView
android:id="#+id/grid_item_imageView"
android:layout_width="match_parent"
android:layout_height="120dp"
android:layout_gravity="center"
android:scaleType="centerInside"
/>
</FrameLayout>

I know this is a pretty old thread but just in case the above answers didn't work, I'd recommend you to try the below code as it worked for me:
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:background="?android:attr/selectableItemBackground"
android:clickable="true"
android:focusable="true"
android:layout_width="match_parent"
android:layout_height="wrap_content">
The key thing to notice are the clickable and focusable.

The solution for this is simple easy in my side.
Here is ripple effect:
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="#BFB3F7">
<item android:id="#android:id/mask">
<shape android:shape="oval">
<solid android:color="#color/button_background_color" />
</shape>
</item>
</ripple>
and next on the class i need to search function
setBackground
Then i need declare a drawable item to it. something like this:
#Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
v.setBackground(res.getDrawable(R.drawable.ripple_effect_for_buttons));
scrollContainer(false);
} else {
v.setBackground(null);
if (recommendation.getFocusedChild() != null) {
scrollContainer(true);
}
}
}
And YUPII its working

You can add:
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:background="#drawable/ripple"/>

In Kotlin it could be easily done with an extension functions.
fun TypedArray.use(block: TypedArray.() -> Unit) {
try {
block()
} finally {
this.recycle()
}
}
fun Context.getStyledAttributes(#StyleableRes attrs: IntArray, block: TypedArray.() -> Unit) =
this.obtainStyledAttributes(attrs).use(block)
fun View.setClickableRipple() {
val attrs = intArrayOf(R.attr.selectableItemBackground)
context.getStyledAttributes(attrs) {
val backgroundResource = getResourceId(0, 0)
setBackgroundResource(backgroundResource)
}
}

Changing color of the border of the background of a list item

I was going through this tutorial and had the idea of making it so when you press a button, one of the cards borders changes color.
I looked at this solution, but nothing happens.
Here is what I have done:
I have an xml in drawable for the shape (feed_item.xml):
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Bottom 2dp Shadow -->
<item>
<shape android:shape="rectangle">
<solid android:color="#d8d8d8" />
<corners android:radius="7dp" />
</shape>
</item>
<!-- White Top color -->
<item android:bottom="3px" android:id="#+id/feedsquare">
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<!-- view background color -->
<solid
android:color="#color/white" >
</solid>
<!-- view border color and width (I WANT TO CHANGE THIS) -->
<stroke
android:width="1dp"
android:color="#color/white" >
</stroke>
<!-- If you want to add some padding -->
<padding
android:left="4dp"
android:top="4dp"
android:right="4dp"
android:bottom="4dp" >
</padding>
</shape>
</item>
</layer-list>
Then I have a layout that is basically how each card/list item looks (list_row.xml):
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:background="#drawable/feed_item"
android:id="#+id/card"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="vertical"
android:padding="2dp"
xmlns:android="http://schemas.android.com/apk/res/android">
<TextView android:id="#+id/title"
android:layout_height="wrap_content"
android:layout_margin="4dp"
android:layout_width="wrap_content"
android:text="MMMMMMMMMM"
android:textSize="#dimen/name3"
android:textColor="#color/black" />
<!--android:scaleType="fitXY"-->
<ImageView android:id="#+id/list_image"
android:layout_height="180dp"
android:layout_margin="2dp"
android:layout_weight="0.04"
android:layout_width="match_parent"
android:scaleType="centerInside"
android:adjustViewBounds="true"
android:src="#mipmap/navigation_refresh"/>
<TextView android:id="#+id/description"
android:layout_height="wrap_content"
android:layout_margin="4dp"
android:layout_width="wrap_content"
android:text="MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM"
android:textSize="#dimen/description3"
android:textColor="#color/black" />
</LinearLayout>
Now, I have a fragment with a listview. The fragment does exactly what the tutorial does (show 8 cards). I've added a button to the fragment that I want to change a specific cards border color (in the fragments onactivitycreated):
newpost = (Button) getActivity().findViewById(R.id.reply);
newpost.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
LayerDrawable layers = (LayerDrawable) getActivity().getResources().getDrawable(R.drawable.feed_item);
GradientDrawable shape = (GradientDrawable) (layers.findDrawableByLayerId(R.id.feedsquare));
shape.setStroke(1 ,R.color.green);
}
});
Nothing happens when I press the button. Any ideas as to what I can do?

To show selected item (row) in listview :
create a variable in adapter class :
private int selectedPosition = 0;
Create method in side adapter :
public void setSelectedItem(int position) {
this.selectedPosition = position;
notifyDataSetChanged();
}
Add check in getView methode
if (position == selectedPosition)
{
convertView.setBackground(context.getResources().getDrawable(R.drawable.selector_rect_black_trans_bg));
}
else convertView.setBackgroundColor(context.getResources().getColor(android.R.color.transparent));
selector_rect_black_trans_bg.xml :
<solid android:color="#color/gray1" />
<stroke
android:width="2dp"
android:color="#color/gray6" />
<corners
android:bottomLeftRadius="0dp"
android:bottomRightRadius="0dp"
android:topLeftRadius="0dp"
android:topRightRadius="0dp" />
In Activity, only you need to pass position in adapter to show highlighted.
its tested code and it will work.

How to make progress bar fill slowly

I have a progressbar in drawable. I want it to fill slowly whenset progress is done. That is it I should be able to see it filling, not in a flash. Also I have a texview inside that progressbar, I want that textview to keep revolving and as soon as the set progress filling completes, the textview should stop revolving and display progress.
Here is my code:
Layout:
<ProgressBar
android:id="#+id/circularProgressBar"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="150dip"
android:layout_height="150dip"
android:layout_centerInParent="true"
android:indeterminate="false"
android:max="100"
android:progress="0"
android:progressDrawable="#drawable/progressbar" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:textSize="47sp"
android:textStyle="bold"
android:textColor="#color/Theme" />
</RelativeLayout>
progressbar.xml
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:id="#android:id/background">
<shape
android:innerRadiusRatio="3"
android:shape="ring"
android:thicknessRatio="7.0"
android:useLevel="false" >
<solid android:color="#color/Red" />
</shape>
</item>
<item android:id="#android:id/progress">
<shape
android:innerRadiusRatio="3"
android:shape="ring"
android:thicknessRatio="7.0" >
<solid android:color="#color/Theme" />
</shape>
</item>
</layer-list>
Also, I have a textview inside this progressbar, I want it to keep rotating until the progress is done. How to do that, I have an animation for that but it is not working.
Here is the code:
rotate.xml
<rotate xmlns:android="http://schemas.android.com/apk/res/android" >
android:duration="4000"
android:fromdegrees="0"
android:pivotx="50%"
android:pivoty="50%"
android:todegrees="360"
android:toyscale="0.0"
</rotate>
It gives warnings like this: Unexpected text found in layout file: "android:fromdegrees="0" android:pivotx="50%"
android:pivoty="50%" android:todegrees="360" android:to..."

Use this code it will help you.
Required Stuff:
CustomProgressDialog
anim
drawble
layout
1) CustomProgressDialog
package com.est.framework.android.ui;
import android.app.Dialog;
import android.content.Context;
import android.graphics.drawable.AnimationDrawable;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import com.sc.restclient.R;
// TODO: Auto-generated Javadoc
/**
* The Class CustomProgressDialog.
*/
public class CustomProgressDialog extends Dialog {
/**
* Instantiates a new custom progress dialog.
*
* #param context the context
* #param theme the theme
*/
public CustomProgressDialog(Context context, int theme) {
super(context, theme);
}
/* (non-Javadoc)
* #see android.app.Dialog#onWindowFocusChanged(boolean)
*/
#Override
public void onWindowFocusChanged(boolean hasFocus) {
ImageView imageView = (ImageView) findViewById(R.id.loadingImageView);
AnimationDrawable yourAnimation = (AnimationDrawable) imageView.getBackground();
yourAnimation.start();
}
/**
* Creates the dialog.
*
* #param context the context
* #param title the title
* #param message the message
* #return the custom progress dialog
*/
public static CustomProgressDialog createDialog(Context context,String title) {
CustomProgressDialog dialog = new CustomProgressDialog(context,android.R.style.Theme_Panel);
dialog.setContentView(R.layout.dialogimg);
int width = ViewGroup.LayoutParams.MATCH_PARENT;
int height = ViewGroup.LayoutParams.MATCH_PARENT;
dialog.getWindow().setLayout(width, height);
TextView mloadMsg = (TextView)dialog.findViewById(R.id.loadMsg);
if (title != null) {
mloadMsg.setText(title);
}else{
mloadMsg.setVisibility(View.GONE);
}
dialog.getWindow().getAttributes().gravity = Gravity.CENTER;
dialog.setCancelable(false);
return dialog;
}
}
2) Layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/pop_bg_bitmap"
android:gravity="center"
android:orientation="vertical" >
<ImageView
android:id="#+id/loadingImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:background="#anim/loading_anim" />
<TextView
android:id="#+id/loadMsg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="10dp"
android:layout_gravity="center_horizontal"
android:textColor="#color/btn_stroke_text"
android:text="Loading..." />
</LinearLayout>
3) Anim
<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
android:oneshot="false">
<item android:drawable="#drawable/progress_1" android:duration="500" />
<item android:drawable="#drawable/progress_2" android:duration="500" />
<item android:drawable="#drawable/progress_3" android:duration="500" />
<item android:drawable="#drawable/progress_4" android:duration="500" />
</animation-list>
4) Drawable
<?xml version="1.0" encoding="utf-8"?>
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
android:src="#drawable/fancybox_overlay"
android:antialias="false"
android:dither="true"
android:tileMode="repeat"
>
</bitmap>
Images :
fancybox_overlay.png
progress_1.png
progress_2.png
progress_3.png
progress_4.png

Create a Property for the progress:
final Property<ProgressBar, Integer> progressProperty = new Property<ProgressBar, Integer>(
int.class, "progress") {
#Override
public Integer get(ProgressBar object) {
return object.getProgress();
}
#Override
public void set(ProgressBar object, Integer value) {
object.setProgress(value);
}
};
Create and start an ObjectAnimator for that property on your ProgressBar (mProgressBar):
private void animateProgressBar(int targetProgress) {
ObjectAnimator anim = ObjectAnimator.ofInt(mProgressBar, progressProperty, targetProgress);
anim.setInterpolator(new DecelerateInterpolator());
anim.setDuration(300);
anim.start();
}
You can costumize the animation with Interpolators, different duration, ecc
You can also use:
private void animateProgressBar(int targetProgress) {
ObjectAnimator anim = ObjectAnimator.ofInt(mProgressBar, "progress", targetProgress);
anim.setInterpolator(new DecelerateInterpolator());
anim.setDuration(300);
anim.start();
}
without declarying the Property, but I don't like this approach that much.

I don't know about the text rotation, but for slowly increasing the progress bar, you can try this one:
mProgressBar is a global progress bar variable which is holding the instance of your progress bar
mProgress is a global integer variable initially set to 0, to monitor the current level of your progress bar.
pSize is the amount you want to increase the progress bar from the current level.
pSleepTime is the speed you want the progress bar to fill up. I usually use 50.
private void setProgressBar(int pSize, int pSleepTime) throws InterruptedException {
for(int i=0;i<pSize && mProgress<100;i++){
mProgress++;
Thread.sleep(pSleepTime);
mProgressBar.setProgress(mProgress);
}
}

You may use Handler and Runnable.
Make the Handler execute postDelayed(yourRunnable, DELAY); in a new method called void next() or something.
In the run() method of yourRunnable, increase the progress position by X amount (very little, like 1 percent or something depending on your desire), and invalidate() your progress bar. After the progress bar increases the progress position by X amount, invoke next() again, which will, execute yourRunnable.run() again, which will increase the progress position by X amount (or you may gradually increase amount using a little more complex math, instead of static X amount), and so goes the cycle until the progress fills up to your desired amount.
private ProgressAnimator animator;
#Override
public void onDraw(Canvas c) {
super.onDraw(c);
if (animator.started) {
animator.next();
}
}
public void animateProgress(float end, IAnimator.PostAnimationAction postPostAnimationAction) {
animator.start(end, postPostAnimationAction);
}
private class ProgressAnimator {
static final long DELAY = 10;
// NOTE:
// "MULTIPLY_FACTOR" IS OPTIONAL.
// I USED THIS TO INCREASE THE PROGRESS SMOOTHLY AT
// DYNAMIC SPEED, NOT AT STATIC SPEED.
// IF YOU WANT STATIC INCREASE OF THE PROGRESS,
// DONT USE THIS.
static final float MULTIPLY_FACTOR = 0.2f;
float endPosition;
float remaining;
boolean started;
PostAnimationAction postAnimationAction;
Handler handler = new Handler();
Runnable runnable = new Runnable() {
#Override
public void run() {
if (Math.abs(remaining) > 1) {
raiseProgress(/* pass the current progress position here*/);
} else {
end();
}
}
};
/**
* Constructor.
*
*/
ProgressSweepAnimator() {
init();
}
#Override
public void init() {
started = false;
}
// NOTE:
// "PostPostAnimationAction" IS OPTIONAL. I CREATED AND USED THIS
// BECAUSE I WANTED TO DO SOMETHING AFTER THE PROGRESS
// ANIMATION IS FINISHED.
public void start(float endPosition, PostAnimationAction postPostAnimationAction) {
this.endPosition = endPosition;
start(postPostAnimationAction);
}
#Override
public void start(PostAnimationAction postAnimationAction) {
// Initialize status.
started = true;
this.postAnimationAction = postAnimationAction;
// Find out the current progress.
float start = /* get the current progress position here*/;
remaining = end - start;
raiseProgress(start);
}
#Override
public void next() {
handler.postDelayed(runnable, DELAY);
}
private void raiseProgress(float from) {
float toRaise = remaining * MULTIPLY_FACTOR;
remaining -= toRaise;
raiseProgressTo(from + toRaise);
}
#Override
public void end() {
raiseTo(end);
init();
// NOTE:
// THIS IS OPTIONAL BUT MAY BE VERY USEFUL, SO I
// JUST LEFT THIS OUT HERE.
// Notify the subscriber about the completion of the Burst action.
postAnimationAction.onActionComplete();
}
}

Below is the code I am using for gradually filling circular progressbar-
xml
<ProgressBar
android:id="#+id/progress"
android:layout_width="100dp"
android:layout_height="100dp"
style="?android:attr/progressBarStyleHorizontal"
android:indeterminate="false"
android:layout_centerInParent="true"
android:max="100"
android:visibility="gone"
android:progressDrawable="#drawable/background" />
background.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:id="#android:id/secondaryProgress">
<shape
android:innerRadiusRatio="3"
android:shape="ring"
android:useLevel="true"
android:thicknessRatio="14.0">
<gradient
android:startColor="#999999"
android:endColor="#999999"
android:centerColor="#999999"
android:type="sweep" />
</shape>
</item>
<item android:id="#android:id/background">
<shape
android:innerRadiusRatio="3"
android:shape="ring"
android:thicknessRatio="14.0"
android:useLevel="false" >
<solid android:color="#color/white" />
</shape>
</item>
<item android:id="#android:id/progress">
<rotate
android:fromDegrees="270"
android:pivotX="50%"
android:pivotY="50%"
android:toDegrees="270" >
<shape
android:innerRadiusRatio="3"
android:shape="ring"
android:useLevel="true"
android:thicknessRatio="14.0">
<rotate
android:fromDegrees="0"
android:toDegrees="360"
android:pivotX="50%"
android:pivotY="50%" />
<gradient
android:startColor="#8E58D4"
android:endColor="#8E58D4"
android:centerColor="#8E58D4"
android:type="sweep" />
</shape>
</rotate>
</item>
</layer-list>
Code
mProgressBar = (ProgressBar) activity.findViewById(R.id.progress);
Resources res = getResources();
Drawable drawable = res.getDrawable(R.drawable.background);
mProgressBar.setProgressDrawable(drawable);
ObjectAnimator animation = ObjectAnimator.ofInt(mProgressBar, "progress", 0, 100);
animation.setDuration(10000);

ValueAnimator to change background color

I want to create a screen with a backgroundcolor that keeps changing from red to blue. For some reason it always crashes when i try to instantiate the ValueAnimator. I have no idea what's wrong with my code
Thank you
Animation class
public BackgroundAnimation(Context context){
super(context);
ValueAnimator colorAnim = ObjectAnimator.ofInt(R.anim.animator, "backgroundColor", Color.RED, Color.BLUE);
colorAnim.setDuration(3000);
colorAnim.setEvaluator(new ArgbEvaluator());
colorAnim.setRepeatCount(ValueAnimator.INFINITE);
colorAnim.setRepeatMode(ValueAnimator.REVERSE);
colorAnim.start();
}
animator.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<objectAnimator
android:propertyName="backgroundColor"/>
</set>
Main class
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.menu);
LinearLayout container = (LinearLayout) findViewById(R.id.container);
container.addView(new BackgroundAnimation(this));
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<TextView
android:id="#+id/TextView01"
android:gravity="center"
android:textSize="20sp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<TextView
android:id="#+id/TextView02"
android:gravity="center"
android:textSize="20sp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<ImageView
android:id="#+id/ImageView01"
android:layout_width="fill_parent"
android:layout_height="300sp"/>
</LinearLayout>

You can use the ObjectAnimator to change the background color:
For API >= 21 :
ObjectAnimator colorAnimator = ObjectAnimator.ofArgb(travelersListView.getBackground().mutate(), "tint", mCurrentBackground, mFadeColor);
colorAnimator.setInterpolator(new AccelerateDecelerateInterpolator());
colorAnimator.start();
For backward support from API 16 use this:
ObjectAnimator colorAnimator = ObjectAnimator.ofObject(travelersListView.getBackground().mutate(), "tint", new ArgbEvaluator(), mCurrentBackground, mFadeColor);
colorAnimator.setInterpolator(new AccelerateDecelerateInterpolator());
colorAnimator.start();

There is not id parameter in XML file for LinearLayout.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:id="#+id/container">

#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.menu);
LinearLayout container = (LinearLayout) findViewById(R.id.container);
changeBackground(container, "#F44336", "#2196F3"); //#F44336 : Red , #2196F3 : Blue
}
public void changeBackground(final View view, String color1, String color2) {
ValueAnimator anim = new ValueAnimator();
anim.setIntValues(Color.parseColor(color1), Color.parseColor(color2));
anim.setEvaluator(new ArgbEvaluator());
anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
#Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
view.setBackgroundColor((Integer) valueAnimator.getAnimatedValue());
}
});
anim.setDuration(2000);
anim.setRepeatCount(ValueAnimator.INFINITE);
anim.setRepeatMode(ValueAnimator.REVERSE);
anim.start();
}
Try this, Hope this helps

No variant of ObjectAnimator.ofInt() takes resource ID as parameter. Please read this for declaring animations in XML. http://developer.android.com/guide/topics/graphics/prop-animation.html#declaring-xml