如何改变android的背景每???秒?
我想用淡入/淡出动画每10秒更改一次相对布局的背景。 所以我发现如何改变android的背景每???秒?,android,animation,Android,Animation,我想用淡入/淡出动画每10秒更改一次相对布局的背景。 所以我发现 //Transitiondrawable TransitionDrawable transition = (TransitionDrawable) viewObj.getBackground(); transition.startTransition(transitionTime); 但它只支持2个可绘制的,我想添加更多 有什么方法可以做到这一点吗?您可以创建自己的循环,例如: int delayBetweenAnimatio
//Transitiondrawable
TransitionDrawable transition = (TransitionDrawable) viewObj.getBackground();
transition.startTransition(transitionTime);
但它只支持2个可绘制的,我想添加更多
有什么方法可以做到这一点吗?您可以创建自己的循环,例如:
int delayBetweenAnimations = 10000;
for (int i = 0; i < yourImagesArray.length ; i++) {
int delay = i * delayBetweenAnimations;
yourImageview.postDelayed(new Runnable() {
@Override
public void run() {
//set your image and animation here
}
}, delay);
}
您可以创建自己的循环,例如:
int delayBetweenAnimations = 10000;
for (int i = 0; i < yourImagesArray.length ; i++) {
int delay = i * delayBetweenAnimations;
yourImageview.postDelayed(new Runnable() {
@Override
public void run() {
//set your image and animation here
}
}, delay);
}
首先实现MyAnim.java类,如下所示:
public class MyAnim extends Animation {
private final RelativeLayout view;
private int targetBackGround;
public MyAnim(RelativeLayout view, int tagetBackGroundColor) {
this.view = view;
this.targetBackGround = tagetBackGroundColor;
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
super.applyTransformation(interpolatedTime, t);
view.setBackgroundColor(targetBackGround);
}
public void setColor(int color) {
this.targetBackGround = color;
}
}
然后将以下代码添加到活动中,并在任何需要的地方调用animateBackground()方法:
private MyAnim backgroundAnim;
private int i;
private void animateBackground(){
final RelativeLayout animLay = (RelativeLayout) findViewById(R.id.animLay);
final int colors[] = new int[]{Color.RED, Color.CYAN, Color.DKGRAY, Color.GREEN, Color.MAGENTA};
backgroundAnim = new MyAnim(animLay, colors[i]);
backgroundAnim.setDuration(1000);
animLay.startAnimation(backgroundAnim);
backgroundAnim.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
if (i == colors.length - 1) {
i = 0;
} else {
i++;
}
backgroundAnim.setColor(colors[i]);
animLay.startAnimation(backgroundAnim);
}
@Override
public void onAnimationRepeat(Animation animation) {
}
});
}
首先实现MyAnim.java类,如下所示:
public class MyAnim extends Animation {
private final RelativeLayout view;
private int targetBackGround;
public MyAnim(RelativeLayout view, int tagetBackGroundColor) {
this.view = view;
this.targetBackGround = tagetBackGroundColor;
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
super.applyTransformation(interpolatedTime, t);
view.setBackgroundColor(targetBackGround);
}
public void setColor(int color) {
this.targetBackGround = color;
}
}
然后将以下代码添加到活动中,并在任何需要的地方调用animateBackground()方法:
private MyAnim backgroundAnim;
private int i;
private void animateBackground(){
final RelativeLayout animLay = (RelativeLayout) findViewById(R.id.animLay);
final int colors[] = new int[]{Color.RED, Color.CYAN, Color.DKGRAY, Color.GREEN, Color.MAGENTA};
backgroundAnim = new MyAnim(animLay, colors[i]);
backgroundAnim.setDuration(1000);
animLay.startAnimation(backgroundAnim);
backgroundAnim.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
if (i == colors.length - 1) {
i = 0;
} else {
i++;
}
backgroundAnim.setColor(colors[i]);
animLay.startAnimation(backgroundAnim);
}
@Override
public void onAnimationRepeat(Animation animation) {
}
});
}
在设置背景时,如何为背景设置数组?int[]imageList=new int[]{R.drawable.image1,R.drawable.image2…};我知道这一点,但我问如何设置背景数组非常感谢我的朋友有什么区别?背景不是图像吗?是的,用数组设置视图背景的方法是什么?如view.setBackground(R.drawable.ic);??在设置背景时,如何为背景设置数组?int[]imageList=new int[]{R.drawable.image1,R.drawable.image2…};我知道这一点,但我问如何设置背景数组非常感谢我的朋友有什么区别?背景不是图像吗?是的,用数组设置视图背景的方法是什么?如view.setBackground(R.drawable.ic);??谢谢,这绝对是我现在想要的。我如何使用淡入动画来更改背景颜色?谢谢,这绝对是我现在想要的。我如何使用淡入动画来更改背景颜色