自定义左下角弧形旋转菜单栏
要做这种效果
1- 整个自定义控件其实就是一个ArcMenu .(半圆形那一圈)，左下角的图标没有加入进控件中。
写这个自定义menu.之前有参考
daCapricorn/ArcMenu
2- 我基于他的类改了点。
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他是将左下角的关闭icon都加入到整个自定义menu的layout中的，我是独立出来
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我menu中的item添加的思路是首先都给它固定在界面的最左边，往屏幕左边外面便宜半个item的宽度。然后在draw时，将每一个item的位置根据自身的角度，设置rotate值，不但外面要rotate到item本身应该所在的位置（pivot要设置为左下角为原点），它自身也得根据偏移的角度rotate到一个正确的向上的角度。其实在初始化时都给它们偏移过了。
3- 当然现在6.0、7.0上的那些自带效果比我这漂亮多了，不过为了完成设计师给的设计稿，不得不这样写。所以轻喷。
4- 下面po上实现步骤。
a,自定义一个类ArcMenu继承自FrameLayout.重载三个构造方法。
public class ArcMenu extends FrameLayout {
public ArcMenu(Context context) {super(context);}
public ArcMenu(Context context, AttributeSet attrs) {super(context, attrs);}
<span style="font-family: 'microsoft yahei'; background-color: rgb(246, 246, 246);"> </span>
<span style="font-family: 'microsoft yahei'; background-color: rgb(246, 246, 246);">b,重写 onSizeChanged方法，确定控件的高宽，并初始化控件中的一些参数</span>
<span style="font-family: 'microsoft yahei'; background-color: rgb(246, 246, 246);"><img 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" alt="" /> </span>
<span style="font-family: 'microsoft yahei'; background-color: rgb(246, 246, 246);"> </span>
<span style="font-family: 'microsoft yahei'; background-color: rgb(246, 246, 246);"></span><pre style="font-family: 'Source Code Pro'; background-color: rgb(199, 237, 204);"><span style="font-size:14px;"><span style="color: rgb(0, 0, 128); "><strong>private void </strong></span>init() {
<span style="color: rgb(0, 0, 128); "><strong>if </strong></span>(!isInEditMode()) {
<span style="color: rgb(0, 0, 128); "><strong>for </strong></span>(<span style="color: rgb(0, 0, 128); "><strong>int </strong></span>i = <span style="color: rgb(0, 0, 255);">0</span><span style="color: rgb(24, 14, 6);">; </span>i < <span style="color: rgb(102, 14, 122); "><strong><em>ICON_COUNT</em></strong></span><span style="color: rgb(24, 14, 6);">; </span>i++) {</span>
//初始化默认和点击的图片bitmap m_iconGrayBitmaps[i] = DrawableManager.instance().getAssetBitmap(s_iconNamePrefixes[i] + "_gray.png"); m_iconWhiteBitmaps[i] = DrawableManager.instance().getAssetBitmap(s_iconNamePrefixes[i] + "_white.png"); // m_tangent[i] = Math.tan(90.0f / ICON_COUNT * i); } } m_arcWidth = m_height / 4;//弧形的宽度 // m_itemIndex = 0; m_startDegree = 90.0f / ICON_COUNT / 2; //第一个item初始化时应该待的位置的偏移角度 m_stepDegree = 90.0f / ICON_COUNT; //每一个item相对前一个item所偏移的角度
//新建一个矩形，中心点为左下角
m_arcRect = new RectF(-(m_width - m_arcWidth / 2), m_arcWidth / 2, m_width - m_arcWidth / 2, 2 * m_height - m_arcWidth / 2); int shadow_arc_width = Utils.dp2px(SHADOW_ARC_WIDTH); m_arcShadow = new RectF(-(m_width - m_arcWidth - shadow_arc_width / 2), m_arcWidth + shadow_arc_width / 2, (m_width - m_arcWidth - shadow_arc_width / 2), 2 * m_height - m_arcWidth - shadow_arc_width / 2); m_arcbgPaint = new Paint(Paint.ANTI_ALIAS_FLAG); m_arcbgPaint.setStyle(Paint.Style.STROKE); m_arcbgPaint.setStrokeWidth(m_arcWidth); m_arcbgPaint.setColor(getResources().getColor(R.color.bg_menu_arc)); m_arcfgPaint = new Paint(Paint.ANTI_ALIAS_FLAG); m_arcfgPaint.setStyle(Paint.Style.STROKE); m_arcfgPaint.setStrokeWidth(m_arcWidth); m_arcfgPaint.setColor(getResources().getColor(R.color.fg_menu_arc)); m_shadowPaint = new Paint(Paint.ANTI_ALIAS_FLAG); m_shadowPaint.setStyle(Paint.Style.STROKE); m_shadowPaint.setStrokeWidth(shadow_arc_width); m_shadowPaint.setColor(getResources().getColor(R.color.default_black)); setOnTouchListener(new OnTouchListener() {
@Override public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
int index = pointInArc(event.getX(), event.getY()); if (index >= 0) {
Logger.debug("click on icon " + index); m_itemIndex = index; invalidate(); m_itemClickedListener.onMenuItemClicked(index); return true; }
}
return false; }
}); }
上面图画错了。。绿色框其实就是外面的m_arcRect
shadowArc其实是 那一层黑色的arc..我懒得再画了。。
</pre><pre name="code" class="java">接下来就是画图了。把那些item要画上去，还得画上这两层弧形
用到dipatchDraw
<pre style="font-family: 'Source Code Pro'; font-size: 9pt; background-color: rgb(199, 237, 204);"><span style="color:#808000;">@Override
</span><span style="color:#000080;"><strong>protected void </strong></span>dispatchDraw(Canvas canvas) {
Path path = <span style="color:#000080;"><strong>new </strong></span>Path()<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span><span style="color:#808080;"><em>/// draw out arc
</em></span><span style="color:#808080;"><em> </em></span>path.arcTo(<span style="color:#660e7a;"><strong>m_arcRect</strong></span><span style="color:#180e06;">, </span><span style="color:#0000ff;">270.0f</span><span style="color:#180e06;">, </span><span style="color:#0000ff;">90.0f</span>)<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span>canvas.drawPath(path<span style="color:#180e06;">, </span><span style="color:#660e7a;"><strong>m_arcbgPaint</strong></span>)<span style="color:#180e06;">;
</span><span style="color:#180e06;">
</span><span style="color:#180e06;"> </span>canvas.drawArc(<span style="color:#660e7a;"><strong>m_arcRect</strong></span><span style="color:#180e06;">, </span><span style="color:#0000ff;">270.0f </span>+ <span style="color:#660e7a;"><strong>m_stepDegree </strong></span>* <span style="color:#660e7a;"><strong>m_itemIndex</strong></span><span style="color:#180e06;">, </span><span style="color:#660e7a;"><strong>m_stepDegree</strong></span><span style="color:#180e06;">, </span><span style="color:#000080;"><strong>false</strong></span><span style="color:#180e06;">, </span><span style="color:#660e7a;"><strong>m_arcfgPaint</strong></span>)<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span><span style="color:#808080;"><em>/// draw shadow arc
</em></span><span style="color:#808080;"><em> </em></span>canvas.drawArc(<span style="color:#660e7a;"><strong>m_arcShadow</strong></span><span style="color:#180e06;">, </span><span style="color:#0000ff;">270.0f</span><span style="color:#180e06;">, </span><span style="color:#0000ff;">90.0f</span><span style="color:#180e06;">, </span><span style="color:#000080;"><strong>false</strong></span><span style="color:#180e06;">, </span><span style="color:#660e7a;"><strong>m_shadowPaint</strong></span>)<span style="color:#180e06;">;
</span><span style="color:#180e06;">
</span><span style="color:#180e06;"> </span><span style="color:#808080;"><em>/// draw bitmaps
</em></span><span style="color:#808080;"><em> </em></span><span style="color:#000080;"><strong>for </strong></span>(<span style="color:#000080;"><strong>int </strong></span>i = <span style="color:#0000ff;">0</span><span style="color:#180e06;">; </span>i < <span style="color:#660e7a;"><strong><em>ICON_COUNT</em></strong></span><span style="color:#180e06;">; </span>i++) {
Bitmap bitmap<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span><span style="color:#000080;"><strong>if </strong></span>(i == <span style="color:#660e7a;"><strong>m_itemIndex</strong></span>) { <span style="color:#808080;"><em>/// selected icon
</em></span><span style="color:#808080;"><em> </em></span>bitmap = <span style="color:#660e7a;"><strong>m_iconWhiteBitmaps</strong></span>[i]<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span>} <span style="color:#000080;"><strong>else </strong></span>{ <span style="color:#808080;"><em>/// not selected
</em></span><span style="color:#808080;"><em> </em></span>bitmap = <span style="color:#660e7a;"><strong>m_iconGrayBitmaps</strong></span>[i]<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span>}
<span style="color:#000080;"><strong>if </strong></span>(bitmap != <span style="color:#000080;"><strong>null</strong></span>) {
Matrix matrix = <span style="color:#000080;"><strong>new </strong></span>Matrix()<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span>matrix.postTranslate(-bitmap.getWidth() / <span style="color:#0000ff;">2</span><span style="color:#180e06;">, </span>(<span style="color:#660e7a;"><strong>m_arcWidth </strong></span>- bitmap.getHeight()) / <span style="color:#0000ff;">2</span>)<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span>matrix.postRotate(-<span style="color:#660e7a;"><strong>m_startDegree </strong></span>- <span style="color:#660e7a;"><strong>m_stepDegree </strong></span>* i<span style="color:#180e06;">, </span><span style="color:#0000ff;">0</span><span style="color:#180e06;">, </span><span style="color:#660e7a;"><strong>m_arcWidth </strong></span>/ <span style="color:#0000ff;">2</span>)<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span>matrix.postRotate(<span style="color:#660e7a;"><strong>m_startDegree </strong></span>+ <span style="color:#660e7a;"><strong>m_stepDegree </strong></span>* i<span style="color:#180e06;">, </span><span style="color:#0000ff;">0</span><span style="color:#180e06;">, </span><span style="color:#660e7a;"><strong>m_height</strong></span>)<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span>canvas.drawBitmap(bitmap<span style="color:#180e06;">, </span>matrix<span style="color:#180e06;">, </span><span style="color:#000080;"><strong>null</strong></span>)<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span>}
}
<span style="color:#000080;"><strong>super</strong></span>.dispatchDraw(canvas)<span style="color:#180e06;">;
</span>}
写到这里不知道怎么说了。。干脆贴代码算了。
<pre style="font-family: 'Source Code Pro'; font-size: 9pt; background-color: rgb(199, 237, 204);"><span style="color:#808080;"><em>/**
</em></span><span style="color:#808080;"><em> * check if point (x, y) is within arc icon
</em></span><span style="color:#808080;"><em> *
</em></span><span style="color:#808080;"><em> * </em></span><span style="color:#808080;"><strong><em>@param </em></strong></span><span style="color:#3d3d3d;"><strong><em>x
</em></strong></span><span style="color:#3d3d3d;"><strong><em> </em></strong></span><span style="color:#808080;"><em>* </em></span><span style="color:#808080;"><strong><em>@param </em></strong></span><span style="color:#3d3d3d;"><strong><em>y
</em></strong></span><span style="color:#3d3d3d;"><strong><em> </em></strong></span><span style="color:#808080;"><em>* </em></span><span style="color:#808080;"><strong><em>@return </em></strong></span><span style="color:#808080;"><em>index of the icon clicked, or -1
</em></span><span style="color:#808080;"><em> */
</em></span><span style="color:#000080;"><strong>private int </strong></span>pointInArc(<span style="color:#000080;"><strong>float </strong></span>x<span style="color:#180e06;">, </span><span style="color:#000080;"><strong>float </strong></span>y) {
<span style="color:#000080;"><strong>float</strong></span>[] pts = {x<span style="color:#180e06;">, </span>y}<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span><span style="color:#000080;"><strong>float</strong></span>[] target_pts = <span style="color:#000080;"><strong>new float</strong></span>[<span style="color:#0000ff;">2</span>]<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span>Matrix matrix = <span style="color:#000080;"><strong>new </strong></span>Matrix()<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span>matrix.postRotate(-<span style="color:#660e7a;"><strong>m_startDegree</strong></span><span style="color:#180e06;">, </span><span style="color:#0000ff;">0</span><span style="color:#180e06;">, </span><span style="color:#660e7a;"><strong>m_height</strong></span>)<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span><span style="color:#000080;"><strong>for </strong></span>(<span style="color:#000080;"><strong>int </strong></span>i = <span style="color:#0000ff;">0</span><span style="color:#180e06;">; </span>i < <span style="color:#660e7a;"><strong><em>ICON_COUNT</em></strong></span><span style="color:#180e06;">; </span>i++) {
matrix.mapPoints(target_pts<span style="color:#180e06;">, </span>pts)<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span><span style="color:#000080;"><strong>if </strong></span>(pointInStartRectOfIcon(target_pts)) {
<span style="color:#000080;"><strong>return </strong></span>i<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span>}
matrix.postRotate(-<span style="color:#660e7a;"><strong>m_stepDegree</strong></span><span style="color:#180e06;">, </span><span style="color:#0000ff;">0</span><span style="color:#180e06;">, </span><span style="color:#660e7a;"><strong>m_height</strong></span>)<span style="color:#180e06;">;
</span><span style="color:#180e06;"> </span>}
<span style="color:#000080;"><strong>return </strong></span>-<span style="color:#0000ff;">1</span><span style="color:#180e06;">;
</span>}
<span style="color:#808080;"><em>/**
</em></span><span style="color:#808080;"><em> * check if (target_pts[0], target_pts[1]) is in the start position of icons
</em></span><span style="color:#808080;"><em> *
</em></span><span style="color:#808080;"><em> * </em></span><span style="color:#808080;"><strong><em>@param </em></strong></span><span style="color:#3d3d3d;"><strong><em>target_pts
</em></strong></span><span style="color:#3d3d3d;"><strong><em> </em></strong></span><span style="color:#808080;"><em>* </em></span><span style="color:#808080;"><strong><em>@return
</em></strong></span><span style="color:#808080;"><strong><em> </em></strong></span><span style="color:#808080;"><em>*/
</em></span><span style="color:#000080;"><strong>private boolean </strong></span>pointInStartRectOfIcon(<span style="color:#000080;"><strong>float</strong></span>[] target_pts) {
<span style="color:#000080;"><strong>return </strong></span>target_pts[<span style="color:#0000ff;">0</span>] > -<span style="color:#660e7a;"><strong>m_arcWidth </strong></span>/ <span style="color:#0000ff;">2 </span>&& target_pts[<span style="color:#0000ff;">0</span>] < <span style="color:#660e7a;"><strong>m_arcWidth </strong></span>/ <span style="color:#0000ff;">2
</span><span style="color:#0000ff;"> </span>&& target_pts[<span style="color:#0000ff;">1</span>] > <span style="color:#0000ff;">0 </span>&& target_pts[<span style="color:#0000ff;">1</span>] < <span style="color:#660e7a;"><strong>m_arcWidth</strong></span><span style="color:#180e06;">;
</span>}
/** * Sets the click listener for menu items. */ public void setOnItemClickedListener(ArcMenuItemClickedListener itemClickedListener) { this.m_itemClickedListener = itemClickedListener; } public void setSelectedIcon(int index, boolean bInvalidate) { m_itemIndex = index; if(bInvalidate) { invalidate(); } }就酱吧。。。写个博客烦球死。。
</pre><pre name="code" class="java">..