自定义viewGroup实现点击动画效果

public class MyCustomView extends ViewGroup implements View.OnClickListener {

private OnMenuItemClickListener mMenuItemClickListener;

/**
* 点击子菜单项的回调接口
*/
public interface OnMenuItemClickListener {
void onClick(View view, int pos);
}

public void setOnMenuItemClickListener(
OnMenuItemClickListener mMenuItemClickListener) {
this.mMenuItemClickListener = mMenuItemClickListener;
}

public enum Status {
OPEN, CLOSE
}

private int mRadius;
/**
* 菜单的状态
*/
private Status mCurrentStatus = Status.CLOSE;
/**
* 菜单的主按钮
*/
private View mCButton;

public MyCustomView(Context context) {//通过new对象来调用
this(context, null);
Log.i("jj", "super(context)");
}

public MyCustomView(Context context, AttributeSet attrs) {//在布局中使用时调用
this(context, attrs, 0);
Log.i("jj", "super(context, attrs)");
}

public MyCustomView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
Log.i("jj", "super(context, attrs, defStyleAttr)");
mRadius = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 100, getResources().getDisplayMetrics());
Log.i("jj", "mRadius1: " + mRadius);
// 获取自定义属性的值
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.MyCustomView, defStyleAttr, 0);
mRadius = (int) a.getDimension(R.styleable.MyCustomView_radius, TypedValue
.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 100,
getResources().getDisplayMetrics()));
Log.i("jj", "mRadius: " + mRadius);
a.recycle();
}

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int count = getChildCount();
for (int i = 0; i < count; i++) {
// 测量child
measureChild(getChildAt(i), widthMeasureSpec, heightMeasureSpec);
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
if (changed) {
layoutCButton();
int count = getChildCount();
for (int i = 0; i < count - 1; i++) {
View child = getChildAt(i + 1);
child.setVisibility(View.GONE);
int cl = (int) (mRadius * Math.sin(Math.PI / 2 / (count - 2)
* i));
int ct = (int) (mRadius * Math.cos(Math.PI / 2 / (count - 2)
* i));
int cWidth = child.getMeasuredWidth();
int cHeight = child.getMeasuredHeight();
ct = getMeasuredHeight() - cHeight - ct;
cl = getMeasuredWidth() - cWidth - cl;
child.layout(cl, ct, cl + cWidth, ct + cHeight);
}
}
}

private void layoutCButton() {
mCButton = getChildAt(0);
mCButton.setOnClickListener(this);
int width = mCButton.getMeasuredWidth();
int height = mCButton.getMeasuredHeight();
int l = getMeasuredWidth() - width;
int t = getMeasuredHeight() - height;
mCButton.layout(l, t, l + width, t + width);
}

@Override
public void onClick(View v) {
rotateCButton(v, 0f, 360f, 300);
toggleMenu(300);
}

private void rotateCButton(View v, float start, float end, int duration) {

RotateAnimation anim = new RotateAnimation(start, end,
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
0.5f);
anim.setDuration(duration);
anim.setFillAfter(true);
v.startAnimation(anim);
}

/**
* 切换菜单
*/
public void toggleMenu(int duration) {
// 为menuItem添加平移动画和旋转动画
int count = getChildCount();
for (int i = 0; i < count - 1; i++) {
final View childView = getChildAt(i + 1);
childView.setVisibility(View.VISIBLE);
int cl = (int) (mRadius * Math.sin(Math.PI / 2 / (count - 2) * i));
int ct = (int) (mRadius * Math.cos(Math.PI / 2 / (count - 2) * i));

AnimationSet animset = new AnimationSet(true);
Animation tranAnim = null;
int xflag = 1;
int yflag = 1;
// to open
if (mCurrentStatus == Status.CLOSE) {
tranAnim = new TranslateAnimation(xflag * cl, 0, yflag * ct, 0);
childView.setClickable(true);
childView.setFocusable(true);

} else
// to close
{
tranAnim = new TranslateAnimation(0, xflag * cl, 0, yflag * ct);
childView.setClickable(false);
childView.setFocusable(false);
}
tranAnim.setFillAfter(true);
tranAnim.setDuration(duration);
tranAnim.setStartOffset((i * 100) / count);
tranAnim.setAnimationListener(new Animation.AnimationListener() {

@Override
public void onAnimationStart(Animation animation) {

}

@Override
public void onAnimationRepeat(Animation animation) {

}

@Override
public void onAnimationEnd(Animation animation) {
if (mCurrentStatus == Status.CLOSE) {
childView.setVisibility(View.GONE);
}
}
});
// 旋转动画
RotateAnimation rotateAnim = new RotateAnimation(0, 720,
Animation.RELATIVE_TO_SELF, 0.5f,
Animation.RELATIVE_TO_SELF, 0.5f);
rotateAnim.setDuration(duration);
rotateAnim.setFillAfter(true);
animset.addAnimation(rotateAnim);
animset.addAnimation(tranAnim);
childView.startAnimation(animset);
final int pos = i + 1;
childView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (mMenuItemClickListener != null)
mMenuItemClickListener.onClick(childView, pos);
menuItemAnim(pos - 1);
changeStatus();

}
});
}
// 切换菜单状态
changeStatus();
}

/**
* 添加menuItem的点击动画
*
* @param
*/
private void menuItemAnim(int pos) {
for (int i = 0; i < getChildCount() - 1; i++) {

View childView = getChildAt(i + 1);
if (i == pos) {
childView.startAnimation(scaleBigAnim(300));
} else {
childView.startAnimation(scaleSmallAnim(300));
}

childView.setClickable(false);
childView.setFocusable(false);

}

}

private Animation scaleSmallAnim(int duration) {

AnimationSet animationSet = new AnimationSet(true);

ScaleAnimation scaleAnim = new ScaleAnimation(1.0f, 0.0f, 1.0f, 0.0f,
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
0.5f);
AlphaAnimation alphaAnim = new AlphaAnimation(1f, 0.0f);
animationSet.addAnimation(scaleAnim);
animationSet.addAnimation(alphaAnim);
animationSet.setDuration(duration);
animationSet.setFillAfter(true);
return animationSet;

}

/**
* 为当前点击的Item设置变大和透明度降低的动画
*
* @param duration
* @return
*/
private Animation scaleBigAnim(int duration) {
AnimationSet animationSet = new AnimationSet(true);

ScaleAnimation scaleAnim = new ScaleAnimation(1.0f, 4.0f, 1.0f, 4.0f,
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
0.5f);
AlphaAnimation alphaAnim = new AlphaAnimation(1f, 0.0f);

animationSet.addAnimation(scaleAnim);
animationSet.addAnimation(alphaAnim);

animationSet.setDuration(duration);
animationSet.setFillAfter(true);
return animationSet;

}

public boolean isOpen() {
return mCurrentStatus == Status.OPEN;
}

/**
* 切换菜单状态
*/
private void changeStatus() {
mCurrentStatus = (mCurrentStatus == Status.CLOSE ? Status.OPEN
: Status.CLOSE);
}

}

attrs.xml:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<attr name="radius" format="dimension" />
<declare-styleable name="MyCustomView">
<attr name="radius" />
</declare-styleable>
</resources>

菜单布局文件：<com.admom.mycanvas.view.MyCustomView xmlns:android="http://schemas.android.com/apk/res/android"xmlns:hyman="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/id_menu"android:layout_width="match_parent"android:layout_height="match_parent"hyman:radius="160dp"><RelativeLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:background="@drawable/composer_button"><ImageViewandroid:id="@+id/id_button"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerInParent="true"android:src="@drawable/composer_icn_plus" /></RelativeLayout><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/composer_music"android:tag="Music" /><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/composer_place"android:tag="Place" /><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/composer_sleep"android:tag="Sleep" /><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/composer_thought"android:tag="Sun" /><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/composer_with"android:tag="People" /></com.admom.mycanvas.view.MyCustomView>

主界面布局文件：

<?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"><include layout="@layout/menu_right_bottom"/></RelativeLayout>

在主程序直接使用：mMenu = (MyCustomView) findViewById(R.id.id_menu);mMenu.setOnMenuItemClickListener(new MyCustomView.OnMenuItemClickListener() {@Overridepublic void onClick(View view, int pos) {Toast.makeText(MainActivity.this, pos + ":" + view.getTag(), Toast.LENGTH_SHORT).show();}});

mMenu.setOnTouchListener(new View.OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {if(mMenu.isOpen()){mMenu.toggleMenu(300);}return false;}});