I'm attempting to rotate an imageView in place while it is not in the middle. I'm using RotateAnimation, and here is my code:
int x = imageView.getLeft();
int y = imageView.getTop();
Animation rotate = new RotateAnimation((float) 0, (float) 359, (float) x, (float) y);
imageView.setAnimation(rotate);
When I do this, the imageView does not rotate in place, instead it rotates around a pivot point off of the screen. However, when I ran it in debugging mode, x and y equated to 300 and 352, which seems right. Can someone explain why the imageView is rotating around some other pivot point instead of the ones I set for it?
create the rotate.xml file in anim folder and use following code
<?xml version="1.0" encoding="UTF-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="1600"
android:fromDegrees="0"
android:interpolator="#android:anim/linear_interpolator"
android:pivotX="50%"
android:pivotY="50%"
android:repeatCount="infinite"
android:toDegrees="358" />
and in Activity
myImage.startAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.rotate));
Try this
public static android.graphics.BitmapFactory.Options getSize(Context c, int resId){
android.graphics.BitmapFactory.Options o = new android.graphics.BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeResource(c.getResources(), resId, o);
return o;
}
This returns an Options object that will contain the actual width and height. From an Activity you could use it like this:
ImageView img = (ImageView)findViewById(R.id.yourImageViewId);
Options o = getSize(this, R.drawable.yourImage);
Matrix m = new Matrix();
m.postRotate(angle, o.outWidth/2, o.outHeight/2);
img.setScaleType(ScaleType.MATRIX);
img.setImageMatrix(m);
I am using objectAnimator for animating a button from bottom to top in Android. Now i am using the below code
ObjectAnimator transAnimation = ObjectAnimator.ofFloat(button,"translationY",0,440);
transAnimation.setDuration(440);
transAnimation.start();
I have also tried with sample code below. But still the problem exists
ObjectAnimator transAnimation = ObjectAnimator.ofFloat(loginLayout, "translationY",0f,0.8f);
transAnimation.setDuration(480);
transAnimation.start();
It works fine in large screen devices. But when it comes to small screen devices it goes off the screen. I want to stay it in the top of the screen irrespective of different screen sizes. I think i have to give values in percentage (say 0% to 100% or 0 to 100%p). So my question is how to give values in percentage in objectAnimator in Android. I also noticed one thing that this objectAnimator is introduced only in HoneyComb. So is there any backward compatibility libraries for running it in low versions. Could anyone guide me to find a solution for this.
I also tried extending View and writing getter and setter for the property in offset(). Still it does not move fully to top of screen. Here is the code I have used.
#SuppressLint("NewApi") public float getXFraction()
{
int width = context.getWindowManager().getDefaultDisplay().getHeight();
return (width == 0) ? 0 : (getY());
}
#SuppressLint("NewApi") public void setXFraction(float xFraction) {
int width = context.getWindowManager().getDefaultDisplay().getWidth();
setY((width > 0) ? (width) : 0);
}
Thanks inAdvance
To use ObjectAnimator on pre-Honeycomb devices add NineOldAndroids library to your project and change your imports to use com.nineoldandroids.animation.ObjectAnimator.
To use percentage values in ObjectAnimator instead of getXFraction and setXFraction you have to add getYFraction and setYFraction methods like this
public float getYFraction() {
final WindowManager wm = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE);
int height = wm.getDefaultDisplay().getHeight();
return (height == 0) ? 0 : getY() / (float) height;
}
public void setYFraction(float yFraction) {
final WindowManager wm = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE);
int height = wm.getDefaultDisplay().getHeight();
setY((height > 0) ? (yFraction * height) : 0);
}
And then you can create xml file project-folder/res/animator/move_bottom.xml like this
<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="500"
android:propertyName="yFraction"
android:valueFrom="0"
android:valueTo="0.8"
android:valueType="floatType" />
Or create animation in code
final LoginLayout loginLayout = (LoginLayout) findViewById(R.id.login_layout);
final ObjectAnimator oa = ObjectAnimator.ofFloat(loginLayout, "yFraction", 0f, 0.8f);
oa.start();
If you want to create animation from outside of screen with ObjectAnimator. You can do this with Android display size.
#Override
public void onCreate(Bundle savedInstanceState) {
...
sampleImage = BitmapFactory.decodeResource(getResources(), R.drawable.sample);
myImage = (ImageView) findViewById(R.id.image_view);
myImage.setImageBitmap(sampleImage);
//In case API Level is 14 above.
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
float displayWidth = size.x;
//In case API Level is 13 below.
//WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
//Display display = wm.getDefaultDisplay();
//displayWidth = display.getWidth();
animator = ObjectAnimator.ofFloat(myImage, "translationX", displayWidth, 0);
animator.setDuration(500);
}
Sorry, if my suggestion missed the point.
Try using a custom property for ObjectAnimator, instead of creating custom view with custom property, you can create a custom property that accepts a 'fraction':
Property<View, Float> property = new Property<View, Float>(Float.TYPE, "translation_x_fraction") {
#Override public Float get(View view) {
return view.getWidth() <= 0 ? 0 : view.getTranslationX() / view.getWidth();
}
#Override public void set(View view, Float value) {
view.setTranslationX(view.getWidth() * value);
}
}
ObjectAnimator.ofFloat(view, property, 0f, 1f);
I have done this way, I spent too much time but it will save your time.
Arguments:
View (Your support View)
Parent width (Root of your View)
Child width (On which you want to apply Animation)
% (How much percentage you want to move your object or view)
Do not afraid with Arguments, I am explaining here by example.
XML and JAVA code:
activity_main.xml:
<LinearLayout
android:id="#+id/llProgressParent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="5dp"
android:layout_gravity="center"
android:orientation="horizontal"
android:weightSum="1" >
<View
android:id="#+id/viewSuppot"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0" >
</View>
<ImageView
android:id="#+id/ivProgressChild"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="#drawable/ic_launcher" />
</LinearLayout>
MainActivity.java:
private LinearLayout llProgressParent;
private View viewSuppot;
private ImageView ivProgressChild;
private int childWidth, parentWidth;
private int percentage = 75;
on onCreate():
viewSuppot = findViewById(R.id.viewSuppot);
llProgressParent = (LinearLayout)findViewById(R.id.llProgressParent);
llProgressParent.post(new Runnable() {
#Override
public void run() {
parentWidth = llProgressParent.getMeasuredWidth();
}
});
ivProgressChild = (ImageView)findViewById(R.id.ivProgressChild);
ivProgressChild.post(new Runnable() {
#Override
public void run() {
childWidth = ivProgressChild.getMeasuredWidth();
}
});
Method:
private void animateViewByPercentageOrProgrss(final View view, int parentWidth, int childWidth, int percentage){
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
ValueAnimator anim = ValueAnimator.ofInt(view.getMeasuredWidth(), (int) (((float) percentage * parentWidth) / 100)-(childWidth/2));
anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
#Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
int val = (Integer) valueAnimator.getAnimatedValue();
ViewGroup.LayoutParams layoutParams = view.getLayoutParams();
layoutParams.width = val;
view.setLayoutParams(layoutParams);
}
});
anim.setDuration(2000);
anim.start();
}
How to call Method:
animateViewByPercentageOrProgrss(viewSuppot, parentWidth, childWidth, percentage);
Its Done.
how about this
Get Y dimen of parent layout then dividing it by 2 and then doing an animation on it ....
int a = parentlayout.getY();
view.animate().setTranslationY(a/2).start();
this one works as you want ....
its my first answer lemme know if it worked or not ..
I had one image with left facing .
I want that image to face right direction.
Can we do it without any graphics changes.
by animation or other way?
I dont want to do it thru photoshop and increase my app size.
What you want to do is use this method to create a new bitmap with a matrix that can flip your original bitmap, for example this one:
| -1 0 0 |
| 0 1 0 |
| 0 0 1 |
And here is the code that does just that:
final Matrix m = new Matrix();
m.setValues(new float[] { -1, 0, 0, 0, 1, 0, 0, 0, 1});
final Bitmap normalBitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.arrow);
final Bitmap flippedBitmap = Bitmap.createBitmap(normalBitmap, 0, 0, normalBitmap.getWidth(), normalBitmap.getHeight(), m, true);
Hope this helps.
you can do this via CSS
img
{
transform:rotate(7deg);
-ms-transform:rotate(7deg); /* IE 9 */
-moz-transform:rotate(7deg); /* Firefox */
-webkit-transform:rotate(7deg); /* Safari and Chrome */
-o-transform:rotate(7deg); /* Opera */
}
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="100%" android:toXDelta="0%"
android:fromYDelta="0%" android:toYDelta="0%"
android:duration="700" />
</set>
set this xml coding to move from right to left for image view
hope this will help you
how can I make the drawable on a button smaller? The icon is too big, actually higher than the button. This is the code I am using:
<Button
android:background="#drawable/red_button"
android:drawableLeft="#drawable/s_vit"
android:id="#+id/ButtonTest"
android:gravity="left|center_vertical"
android:text="S-SERIES CALCULATOR"
android:textColor="#android:color/white"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_marginLeft="25dp"
android:layout_marginRight="25dp"
android:drawablePadding="10dp">
</Button>
The upper is how it should look, the lower how it looks right now.
I tried this but there is no image displayed. :-(
Resources res = getResources();
ScaleDrawable sd = new ScaleDrawable(res.getDrawable(R.drawable.s_vit), 0, 10f, 10f);
Button btn = (Button) findViewById(R.id.ButtonTest);
btn.setCompoundDrawables(sd.getDrawable(), null, null, null);
I have found a very simple and effective XML solution that doesn't require ImageButton
Make a drawable file for your image as below and use it for android:drawableLeft
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="#+id/half_overlay"
android:drawable="#drawable/myDrawable"
android:width="40dp"
android:height="40dp"
/>
</layer-list>
You can set the image size with android:width and android:height properties.
This way you could at least get the same size for different screens.
The drawback is that it is not exactly like fitXY which would scale image width to fit X and scale image height accordingly.
You should use a ImageButton and specify the image in android:src, and set android:scaletype to fitXY
Setting scaled drawable in code
Drawable drawable = getResources().getDrawable(R.drawable.s_vit);
drawable.setBounds(0, 0, (int)(drawable.getIntrinsicWidth()*0.5),
(int)(drawable.getIntrinsicHeight()*0.5));
ScaleDrawable sd = new ScaleDrawable(drawable, 0, scaleWidth, scaleHeight);
Button btn = findViewbyId(R.id.yourbtnID);
btn.setCompoundDrawables(sd.getDrawable(), null, null, null); //set drawableLeft for example
Buttons do not resize their inner images.
My solution does not require code manipulation.
It uses a layout with TextView and ImageView.
The background of the layout should have the red 3d drawable.
You may need to define the android:scaleType xml attribute.
Example:
<LinearLayout
android:id="#+id/list_item"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:padding="2dp" >
<ImageView
android:layout_width="50dp"
android:layout_height="fill_parent"
android:src="#drawable/camera" />
<TextView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:lines="1"
android:gravity="center_vertical"
android:text="Hello - primary" />
</LinearLayout>
BTW:
Counting on different resolution icons may result in a non predictable UI (icon too big or too small)
Text in textview (including in buttons) does not fill the component. This is an Android problem and I don't know how to solve it.
You can use it as an include.
Good luck
Use a ScaleDrawable as Abhinav suggested.
The problem is that the drawable doesn't show then - it's some sort of bug in ScaleDrawables. you'll need to change the "level" programmatically. This should work for every button:
// Fix level of existing drawables
Drawable[] drawables = myButton.getCompoundDrawables();
for (Drawable d : drawables) if (d != null && d instanceof ScaleDrawable) d.setLevel(1);
myButton.setCompoundDrawables(drawables[0], drawables[1], drawables[2], drawables[3]);
My DiplayScaleHelper, that works perfectly:
import android.content.Context;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.ScaleDrawable;
import android.widget.Button;
public class DisplayHelper {
public static void scaleButtonDrawables(Button btn, double fitFactor) {
Drawable[] drawables = btn.getCompoundDrawables();
for (int i = 0; i < drawables.length; i++) {
if (drawables[i] != null) {
if (drawables[i] instanceof ScaleDrawable) {
drawables[i].setLevel(1);
}
drawables[i].setBounds(0, 0, (int) (drawables[i].getIntrinsicWidth() * fitFactor),
(int) (drawables[i].getIntrinsicHeight() * fitFactor));
ScaleDrawable sd = new ScaleDrawable(drawables[i], 0, drawables[i].getIntrinsicWidth(), drawables[i].getIntrinsicHeight());
if(i == 0) {
btn.setCompoundDrawables(sd.getDrawable(), drawables[1], drawables[2], drawables[3]);
} else if(i == 1) {
btn.setCompoundDrawables(drawables[0], sd.getDrawable(), drawables[2], drawables[3]);
} else if(i == 2) {
btn.setCompoundDrawables(drawables[0], drawables[1], sd.getDrawable(), drawables[3]);
} else {
btn.setCompoundDrawables(drawables[0], drawables[1], drawables[2], sd.getDrawable());
}
}
}
}
}
You can call setBounds on the "compound" drawables to modify the size of the image.
Try this code to autosize the drawable of your button:
DroidUtils.scaleButtonDrawables((Button) findViewById(R.id.ButtonTest), 1.0);
defined by this function:
public final class DroidUtils {
/** scale the Drawables of a button to "fit"
* For left and right drawables: height is scaled
* eg. with fitFactor 1 the image has max. the height of the button.
* For top and bottom drawables: width is scaled:
* With fitFactor 0.9 the image has max. 90% of the width of the button
* */
public static void scaleButtonDrawables(Button btn, double fitFactor) {
Drawable[] drawables = btn.getCompoundDrawables();
for (int i = 0; i < drawables.length; i++) {
if (drawables[i] != null) {
int imgWidth = drawables[i].getIntrinsicWidth();
int imgHeight = drawables[i].getIntrinsicHeight();
if ((imgHeight > 0) && (imgWidth > 0)) { //might be -1
float scale;
if ((i == 0) || (i == 2)) { //left or right -> scale height
scale = (float) (btn.getHeight() * fitFactor) / imgHeight;
} else { //top or bottom -> scale width
scale = (float) (btn.getWidth() * fitFactor) / imgWidth;
}
if (scale < 1.0) {
Rect rect = drawables[i].getBounds();
int newWidth = (int)(imgWidth * scale);
int newHeight = (int)(imgHeight * scale);
rect.left = rect.left + (int)(0.5 * (imgWidth - newWidth));
rect.top = rect.top + (int)(0.5 * (imgHeight - newHeight));
rect.right = rect.left + newWidth;
rect.bottom = rect.top + newHeight;
drawables[i].setBounds(rect);
}
}
}
}
}
}
Be aware, that this may not be called in onCreate() of an activity, because button height and width are not (yet) available there. Call this in on onWindowFocusChanged() or use this solution to call the function.
Edited:
The first incarnation of this function did not work correctly. It used userSeven7s code to scale the image, but returning ScaleDrawable.getDrawable() does not seem to work (neither does returning ScaleDrawable) for me.
The modified code uses setBounds to provide the bounds for the image. Android fits the image into these bounds.
If you want to use 1 image and display it in different size, you can use scale drawable ( http://developer.android.com/guide/topics/resources/drawable-resource.html#Scale ).
I am doing it as below. This creates a 100x100 size image in the button independent of the input image.
drawable.bounds = Rect(0,0,100,100)
button.setCompoundDrawables(drawable, null, null, null)
Not using ScaleDrawable either. Not using button.setCompoundDrawablesRelativeWithIntrinsicBounds() solved my problem, as that seems to use intrinsic bounds (source image size) instead of the bounds you just set.
You can use different sized drawables that are used with different screen densities/sizes, etc. so that your image looks right on all devices.
See here: http://developer.android.com/guide/practices/screens_support.html#support
Did you try wrapping your image in a ScaleDrawable and then using it in your button?
Here the function which I created for scaling vector drawables. I used it for setting TextView compound drawable.
/**
* Used to load vector drawable and set it's size to intrinsic values
*
* #param context Reference to {#link Context}
* #param resId Vector image resource id
* #param tint If not 0 - colour resource to tint the drawable with.
* #param newWidth If not 0 then set the drawable's width to this value and scale
* height accordingly.
* #return On success a reference to a vector drawable
*/
#Nullable
public static Drawable getVectorDrawable(#NonNull Context context,
#DrawableRes int resId,
#ColorRes int tint,
float newWidth)
{
VectorDrawableCompat drawableCompat =
VectorDrawableCompat.create(context.getResources(), resId, context.getTheme());
if (drawableCompat != null)
{
if (tint != 0)
{
drawableCompat.setTint(ResourcesCompat.getColor(context.getResources(), tint, context.getTheme()));
}
drawableCompat.setBounds(0, 0, drawableCompat.getIntrinsicWidth(), drawableCompat.getIntrinsicHeight());
if (newWidth != 0.0)
{
float scale = newWidth / drawableCompat.getIntrinsicWidth();
float height = scale * drawableCompat.getIntrinsicHeight();
ScaleDrawable scaledDrawable = new ScaleDrawable(drawableCompat, Gravity.CENTER, 1.0f, 1.0f);
scaledDrawable.setBounds(0,0, (int) newWidth, (int) height);
scaledDrawable.setLevel(10000);
return scaledDrawable;
}
}
return drawableCompat;
}
Using "BATCH DRAWABLE IMPORT" feature you can import custom size depending upon your requirement example 20dp*20dp
Now after importing use the imported drawable_image as drawable_source for your button
It's simpler this way
It is because you did not setLevel. after you setLevel(1), it will be display as u want
I made a custom button class to achieve this.
CustomButton.java
public class CustomButton extends android.support.v7.widget.AppCompatButton {
private Drawable mDrawable;
public CustomButton(Context context, AttributeSet attrs) {
super(context, attrs);
TypedArray a = context.getTheme().obtainStyledAttributes(
attrs,
R.styleable.CustomButton,
0, 0);
try {
float mWidth = a.getDimension(R.styleable.CustomButton_drawable_width, 0);
float mHeight = a.getDimension(R.styleable.CustomButton_drawable_width, 0);
Drawable[] drawables = this.getCompoundDrawables();
Drawable[] resizedDrawable = new Drawable[4];
for (int i = 0; i < drawables.length; i++) {
if (drawables[i] != null) {
mDrawable = drawables[i];
}
resizedDrawable[i] = getResizedDrawable(drawables[i], mWidth, mHeight);
}
this.setCompoundDrawables(resizedDrawable[0], resizedDrawable[1], resizedDrawable[2], resizedDrawable[3]);
} finally {
a.recycle();
}
}
public Drawable getmDrawable() {
return mDrawable;
}
private Drawable getResizedDrawable(Drawable drawable, float mWidth, float mHeight) {
if (drawable == null) {
return null;
}
try {
Bitmap bitmap;
bitmap = Bitmap.createBitmap((int)mWidth, (int)mHeight, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
drawable.draw(canvas);
return drawable;
} catch (OutOfMemoryError e) {
// Handle the error
return null;
}
}
}
attrs.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="CustomButton">
<attr name="drawable_width" format="dimension" />
<attr name="drawable_height" format="dimension" />
</declare-styleable>
</resources>
Usage in xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:custom="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.MainActivity">
<com.example.CustomButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawableTop="#drawable/ic_hero"
android:text="Avenger"
custom:drawable_height="10dp"
custom:drawable_width="10dp" />
</RelativeLayout>
I tried the techniques of this post but didnot find any of them so attractive. My solution was to use an imageview and textview and align the imageview top and bottom to the textview. This way I got the desired result. Here's some code:
<RelativeLayout
android:id="#+id/relativeLayout1"
android:layout_width="match_parent"
android:layout_height="48dp" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignTop="#+id/textViewTitle"
android:layout_alignBottom="#+id/textViewTitle"
android:src="#drawable/ic_back" />
<TextView
android:id="#+id/textViewBack"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/textViewTitle"
android:layout_alignBottom="#+id/textViewTitle"
android:layout_toRightOf="#+id/imageView1"
android:text="Back"
android:textColor="#color/app_red"
android:textSize="#dimen/title_size" />
</RelativeLayout>
Using Kotlin Extension
val drawable = ContextCompat.getDrawable(context, R.drawable.my_icon)
// or resources.getDrawable(R.drawable.my_icon, theme)
val sizePx = 25
drawable?.setBounds(0, 0, sizePx, sizePx)
// (left, top, right, bottom)
my_button.setCompoundDrawables(drawable, null, null, null)
I suggest creating an extension function on TextView (Button extends it) for easy reuse.
button.leftDrawable(R.drawable.my_icon, 25)
// Button extends TextView
fun TextView.leftDrawable(#DrawableRes id: Int = 0, #DimenRes sizeRes: Int) {
val drawable = ContextCompat.getDrawable(context, id)
val size = context.resources.getDimensionPixelSize(sizeRes)
drawable?.setBounds(0, 0, size, size)
this.setCompoundDrawables(drawable, null, null, null)
}