안드로이드 애니메이션 클래스를 살펴 봤지만 찾고있는 것이 무엇인지 잘 모르겠습니다. LayerDrawable의 단일 레이어에 애니메이션 변환 (X 좌표 변경)을 추가 할 수 있는지 궁금합니다. TranslateAnimation 클래스를 찾았지만 전체 ImageView에서만 작동하며 내 LayerDrawable의 단일 레이어에 애니메이션을 적용하려고합니다. 어떤 충고? 미리 감사드립니다.android : LayerDrawable의 단일 레이어를 애니메이션으로 변환하는 방법
내 대답을 알아 냈습니다 ... 일단 LayerDrawable이 구성되면 실제로 레이어를 조작 할 수없는 것 같습니다. 응답이 없기 때문에 내 질문에 잘못된 것을 묻는 것 같아서 LayerDrawable을 사용하도록 다시 디자인했지만 각 애니메이션 앞뒤에 생성 및 파기되는 개별 drawable/imageView 개체로 애니메이션을 만들었습니다. 그런 다음 imageView에서 ObjectAnimator를 사용하여 원하는 이미지 변환을 얻습니다. 따라서 누구나 LayerDrawable의 개별 레이어에 애니메이션을 적용하려는이 읽는 경우, 다시 디자인하여 Animator 클래스를 사용할 수 있습니다. 하나는 구체적으로 그 당김
의 경계를 조정하기 위해 ValueAnimator를 사용할 수 있습니다 :
짧은 당신이 내부 항목 드로어 블 (id:innerRed)와 레이어 목록 드로어 블을 가지고 가정 하고, 레이아웃에 Button (id:btnWithDrawableBg)이 있고이 레이어 드로우 어블을 background 속성에 할당했다고 가정하면 ValueAnimator을 사용하여 아래 예와 같이 해당 드로어 블의 경계를 조정할 수 있습니다 (x 위치를 각각 100 씩 핑퐁합니다). 측면) :
pos_animator.xml
<?xml version="1.0" encoding="utf-8"?>
<animator xmlns:andoird="http://schemas.android.com/apk/res/android"
andoird:repeatCount="infinite"
andoird:repeatMode="reverse"
andoird:valueFrom="-100"
andoird:valueTo="100"
andoird:valueType="intType"
/>
MyActivity.java
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// our button with the drawable background
Button btnWithBg = (Button) findViewById(R.id.btnWithDrawableBg);
// the layered drawable
final LayerDrawable layerDrawable = (LayerDrawable) btnWithBg.getBackground();
// internal layer (item) drawable with id:innerRed
final GradientDrawable innerRedShape = (GradientDrawable)layerDrawable.findDrawableByLayerId(R.id.innerRed);
// our animator based on the xml above
ValueAnimator posAnim = (ValueAnimator) AnimatorInflater.loadAnimator(
mainLayout.getContext(), R.animator.pos_animator);
posAnim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
// get current offset value and adjust drawable bounds
int value = (Integer)animation.getAnimatedValue();
Rect bounds = innerRedShape.copyBounds();//see Note below
// here only manipulating x value
bounds.offset(value, 0);
innerRedShape.setBounds(bounds);
}
});
posAnim.setTarget(innerRedShape);
posAnim.start();
}
참고copyBounds()가 필요 (단지 getBounds().offset() 생략)이 SO post
에 기초 나는
에서 onCreate()
ImageView imageView = (ImageView) findViewById(R.id.imageView);
Resources r = getResources();
Drawable[] layers = new Drawable[2];
layers[0] = r.getDrawable(R.drawable.your_background_res);
PulseDrawable pulseDrawable = new PulseDrawable(Color.WHITE);
layers[1] = pulseDrawable;
LayerDrawable layerDrawable = new LayerDrawable(layers);
// This will adjust X & Y of layer, we have to pass layer index (250 pixels from Left and 150 pixels from Right)
layerDrawable.setLayerInset(1, 250, 150, 0, 0);
imageView.setImageDrawable(layerDrawable);
PulseDrawable.java
import android.animation.AnimatorSet;
import android.animation.ValueAnimator;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.ColorFilter;
import android.graphics.Paint;
import android.graphics.RadialGradient;
import android.graphics.Rect;
import android.graphics.Shader;
import android.graphics.drawable.Drawable;
import android.view.animation.DecelerateInterpolator;
public class PulseDrawable extends Drawable {
private final static float CENTER_AREA_SIZE = 0.6f;
private final static int PULSE_START_COLOR_OPACITY = 0;
private final static float MINIMUM_RADIUS = 0;
private final static int ANIMATION_DURATION_IN_MS = 1500;
private final int color;
private Paint centerPaint;
private Paint pulsePaint;
private float fullSizeRadius = 60;
private float currentExpandAnimationValue = 0f;
private int currentAlphaAnimationValue = 255;
public PulseDrawable(int color) {
this.color = color;
initializeDrawable();
}
private void initializeDrawable() {
preparePaints();
prepareAnimation();
}
private void prepareAnimation() {
final ValueAnimator expandAnimator = ValueAnimator.ofFloat(0f, 1f);
expandAnimator.setRepeatCount(ValueAnimator.INFINITE);
expandAnimator.setRepeatMode(ValueAnimator.RESTART);
expandAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
currentExpandAnimationValue = (float) animation.getAnimatedValue();
if (currentExpandAnimationValue == 0f) {
currentAlphaAnimationValue = 255;
}
invalidateSelf();
}
});
final ValueAnimator alphaAnimator = ValueAnimator.ofInt(255, 0);
alphaAnimator.setStartDelay(ANIMATION_DURATION_IN_MS/4);
alphaAnimator.setRepeatCount(ValueAnimator.INFINITE);
alphaAnimator.setRepeatMode(ValueAnimator.RESTART);
alphaAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
currentAlphaAnimationValue = (int) animation.getAnimatedValue();
}
});
AnimatorSet animation = new AnimatorSet();
animation.playTogether(expandAnimator, alphaAnimator);
animation.setDuration(ANIMATION_DURATION_IN_MS);
animation.setInterpolator(new DecelerateInterpolator());
animation.start();
}
private void preparePaints() {
pulsePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
pulsePaint.setStyle(Paint.Style.FILL);
centerPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
centerPaint.setStyle(Paint.Style.FILL);
centerPaint.setColor(color);
}
@Override
public void setAlpha(int alpha) {
pulsePaint.setAlpha(alpha);
}
@Override
public void setColorFilter(ColorFilter colorFilter) { }
@Override
public int getOpacity() {
return pulsePaint.getAlpha();
}
@Override
public void draw(Canvas canvas) {
Rect bounds = getBounds();
//TODO - If we want to draw circle on center of canvas use below code
/*float centerX = bounds.exactCenterX();
float centerY = bounds.exactCenterY();*/
float startX = bounds.left;
float startY = bounds.top;
// calculateFullSizeRadius();
preparePaintShader();
renderPulse(canvas, startX, startY);
renderCenterArea(canvas, startX, startY);
}
private void renderPulse(Canvas canvas, float centerX, float centerY) {
float currentRadius = fullSizeRadius * currentExpandAnimationValue;
if (currentRadius > MINIMUM_RADIUS) {
canvas.drawCircle(centerX, centerY, currentRadius, pulsePaint);
}
}
private void renderCenterArea(Canvas canvas, float centerX, float centerY) {
float currentCenterAreaRadius = fullSizeRadius * CENTER_AREA_SIZE;
if (currentCenterAreaRadius > MINIMUM_RADIUS) {
canvas.save();
float left = centerX - currentCenterAreaRadius;
float top = centerY - currentCenterAreaRadius;
float right = centerX + currentCenterAreaRadius;
float bottom = centerY + currentCenterAreaRadius;
canvas.clipRect(left, top, right, bottom);
canvas.drawCircle(centerX, centerY, currentCenterAreaRadius, centerPaint);
canvas.restore();
}
}
private void preparePaintShader() {
Rect bounds = getBounds();
float centerX = bounds.exactCenterX();
float centerY = bounds.exactCenterY();
float radius = (Math.min(bounds.width(), bounds.height())/2);
if (radius > MINIMUM_RADIUS) {
int edgeColor = getPulseColor();
int centerColor = Color.argb(PULSE_START_COLOR_OPACITY, Color.red(color),
Color.green(color),
Color.blue(color));
pulsePaint.setShader(new RadialGradient(centerX, centerY, radius,
centerColor, edgeColor, Shader.TileMode.CLAMP));
} else {
pulsePaint.setShader(null);
}
}
private int getPulseColor() {
return Color.argb(currentAlphaAnimationValue, Color.red(color),
Color.green(color),
Color.blue(color));
}
private void calculateFullSizeRadius() {
Rect bounds = getBounds();
float minimumDiameter = Math.min(bounds.width(), bounds.height());
fullSizeRadius = (minimumDiameter/2);
}
}
출력
참고 : 데모 용으로 여러 레이어를 추가 할 수 있습니다. 두 레이어를 추가했습니다.
희망이 도움이 될 것입니다.