Android高手進階教程(二十六)之---Android超仿Path菜單的功能實現(xiàn)！
更新時間：2016年11月19日 16:09:01 作者：Android_Tutor
本篇文章主要主要介紹了Android超仿Path菜單的功能實現(xiàn)，現(xiàn)在分享給大家，也給大家做個參考。感興趣的可以了解一下。
Hi~大家好，出來創(chuàng)業(yè)快3個月了，一切還不錯，前一段時間用了業(yè)余時間搞了個問答類網(wǎng)站YQMA.想做中國的stackoverflow,哈哈，只是YY下，希望大家多多支持！
好了，今天給大家分享的是Path菜單的簡單實現(xiàn)，可以支持自定義方向(左上，右上，右下，左下)，并且可以自定義菜單的個數(shù)，難點就是菜單的擺放位置(動態(tài)設(shè)置margin)，還有動畫的實現(xiàn)，其實動畫只是簡單用了個TranslateAnimation，N個菜單一起移動的時候感覺很cool~
這里也用到了自定義標簽，這里不懂的童鞋可以看我 Android高手進階教程(四)之----Android 中自定義屬性(attr.xml,TypedArray)的使用! 這篇文章.好了廢話不多說了，
首先創(chuàng)建一個android工程命名為PathTest.目錄結(jié)構(gòu)如下圖:
第二步:在values文件夾下新建一個attrs.xml文件，代碼如下:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="PathMenuView">
<attr name="position">
<enum name="left_top" value="0"></enum>
<enum name="right_top" value="1"></enum>
<enum name="right_bottom" value="2"></enum>
<enum name="left_bottom" value="3"></enum>
</attr>
</declare-styleable>
</resources>
第三步：新建一個PathMenuView.Java這個就是我們自定義的Path菜單控件，代碼如下：
package com.tutor.path;
import androidcontentContext;
import androidcontentresTypedArray;
import androidutilAttributeSet;
import androidviewGravity;
import androidviewView;
import androidviewViewGroup;
import androidviewanimationAnimation;
import androidviewanimationAnticipateInterpolator;
import androidviewanimationOvershootInterpolator;
import androidviewanimationTranslateAnimation;
import androidwidgetFrameLayout;
import androidwidgetImageView;
/**
* @author frankiewei
* 超級仿path菜單
* position定義菜單的位置，目前支持：左上;右上;右下;左下四個方向。
* menuResIds定義出現(xiàn)的菜單的資源ID
*/
public class PathMenuView extends FrameLayout {
private static final int LEFT_TOP = 0;
private static final int RIGHT_TOP = 1;
private static final int RIGHT_BOTTOM = 2;
private static final int LEFT_BOTTOM = 3;
/**
* 默認的位置是在右下角
*/
private int position = 3;
/**
* 那個圓形菜單
*/
private ImageView mHome;
/**
* 上下文
*/
private Context mContext;
/**
* 設(shè)備的寬度
*/
private int mWIDTH = 0;
/**
* 設(shè)備的高度
*/
private int mHEIGHT = 0;
/**
* 設(shè)備的density
*/
private float mDensity;
/**
* 菜單是否顯示
*/
private boolean bMenuShow;
private static int xOffset = 15;
private static int yOffset = -13;
/**
* 菜單的資源個數(shù)
*/
private int[] menuResIds = {Rdrawablecomposer_camera,Rdrawablecomposer_music,
Rdrawablecomposer_sleep,Rdrawablecomposer_music,Rdrawablecomposer_place};
public PathMenuView(Context context){
super(context);
setupViews();
}
public PathMenuView(Context context, AttributeSet attrs) {
super(context, attrs);
TypedArray a = contextobtainStyledAttributes(attrs,
RstyleablePathMenuView);
position = agetInt(RstyleablePathMenuView_position,3);
arecycle();
setupViews();
}
private void setupViews(){
mContext = getContext();
mHEIGHT = mContextgetResources()getDisplayMetrics()heightPixels;
mWIDTH = mContextgetResources()getDisplayMetrics()widthPixels;
mDensity = mContextgetResources()getDisplayMetrics()density;
xOffset = (int) (667 * mDensity);
yOffset = (int) (667 * mDensity);
mHome = new ImageView(mContext);
mHomesetImageResource(Rdrawablecomposer_button);
mHomesetOnClickListener(listener);
addView(mHome);
LayoutParams mHomeparams = (FrameLayoutLayoutParams)mHomegetLayoutParams();
mHomeparamswidth = LayoutParamsWRAP_CONTENT;
mHomeparamsheight = LayoutParamsWRAP_CONTENT;
switch (position) {
case LEFT_TOP:
mHomeparamsgravity = GravityLEFT | GravityTOP;
for (int i = 0; i < menuResIdslength; i++) {
int width_padding = mWIDTH / ((menuResIdslength - 1) * 2);
int height_padding = mHEIGHT / ((menuResIdslength - 1) * 2);
ImageView imageView = new ImageView(mContext);
imageViewsetImageResource(menuResIds[i]);
addView(imageView);
LayoutParams params = (FrameLayoutLayoutParams) imageView
getLayoutParams();
paramswidth = LayoutParamsWRAP_CONTENT;
paramsheight = LayoutParamsWRAP_CONTENT;
paramsleftMargin = mWIDTH / 2
- ((menuResIdslength - i - 1) * width_padding);
paramstopMargin = mHEIGHT / 2 - i * height_padding;
paramsgravity = GravityLEFT | GravityTOP;
imageViewsetLayoutParams(params);
}
break;
case RIGHT_TOP:
mHomeparamsgravity = GravityRIGHT | GravityTOP;
for (int i = 0; i < menuResIdslength; i++) {
int width_padding = mWIDTH / ((menuResIdslength - 1) * 2);
int height_padding = mHEIGHT / ((menuResIdslength - 1) * 2);
ImageView imageView = new ImageView(mContext);
imageViewsetImageResource(menuResIds[i]);
addView(imageView);
LayoutParams params = (FrameLayoutLayoutParams) imageView
getLayoutParams();
paramswidth = LayoutParamsWRAP_CONTENT;
paramsheight = LayoutParamsWRAP_CONTENT;
paramsrightMargin = mWIDTH / 2
- ((menuResIdslength - i - 1) * width_padding);
paramstopMargin = mHEIGHT / 2 - i * height_padding;
paramsgravity = GravityRIGHT | GravityTOP;
imageViewsetLayoutParams(params);
}
break;
case RIGHT_BOTTOM:
mHomeparamsgravity = GravityRIGHT | GravityBOTTOM;
for (int i = 0; i < menuResIdslength; i++) {
int width_padding = mWIDTH / ((menuResIdslength - 1) * 2);
int height_padding = mHEIGHT / ((menuResIdslength - 1) * 2);
ImageView imageView = new ImageView(mContext);
imageViewsetImageResource(menuResIds[i]);
addView(imageView);
LayoutParams params = (FrameLayoutLayoutParams) imageView
getLayoutParams();
paramswidth = LayoutParamsWRAP_CONTENT;
paramsheight = LayoutParamsWRAP_CONTENT;
paramsrightMargin = mWIDTH / 2
- ((menuResIdslength - i - 1) * width_padding);
paramsbottomMargin = mHEIGHT / 2 - i * height_padding;
paramsgravity = GravityRIGHT | GravityBOTTOM;
imageViewsetLayoutParams(params);
}
break;
case LEFT_BOTTOM:
mHomeparamsgravity = GravityLEFT | GravityBOTTOM;
for(int i = 0; i < menuResIdslength; i++){
int width_padding = mWIDTH / ((menuResIdslength - 1) * 2);
int height_padding = mHEIGHT / ((menuResIdslength -1) * 2);
ImageView imageView = new ImageView(mContext);
imageViewsetImageResource(menuResIds[i]);
addView(imageView);
LayoutParams params = (FrameLayoutLayoutParams)imageViewgetLayoutParams();
paramswidth = LayoutParamsWRAP_CONTENT;
paramsheight = LayoutParamsWRAP_CONTENT;
paramsleftMargin = mWIDTH / 2 - ((menuResIdslength - i - 1) * width_padding);
paramsbottomMargin = mHEIGHT / 2 - i * height_padding;
paramsgravity = GravityLEFT | GravityBOTTOM;
imageViewsetLayoutParams(params);
}
break;
default:
break;
}
mHomesetLayoutParams(mHomeparams);
}
private OnClickListener listener = new OnClickListener() {
public void onClick(View v) {
if (!bMenuShow) {
startAnimationIn(PathMenuViewthis, 300);
} else {
startAnimationOut(PathMenuViewthis, 300);
}
bMenuShow = !bMenuShow;
}
};
/**
* 菜單隱藏動畫
*
* @param group
* @param duration
*/
private void startAnimationIn(ViewGroup group, int duration) {
for (int i = 1; i < groupgetChildCount(); i++) {
ImageView imageview = (ImageView) groupgetChildAt(i);
imageviewsetVisibility(0);
MarginLayoutParams mlp = (MarginLayoutParams) imageview
getLayoutParams();
Animation animation = null;
switch (position) {
case LEFT_TOP:
animation = new TranslateAnimation(0F,-mlpleftMargin+xOffset,0F,-mlptopMargin + yOffset);
break;
case RIGHT_TOP:
animation = new TranslateAnimation(mlprightMargin - xOffset,0F,-mlptopMargin + yOffset,0F);
break;
case LEFT_BOTTOM:
animation = new TranslateAnimation(0F, -mlpleftMargin+ xOffset, 0F, -yOffset + mlpbottomMargin);
break;
case RIGHT_BOTTOM:
animation = new TranslateAnimation(mlprightMargin-xOffset,0F,-yOffset + mlpbottomMargin, 0F);
break;
default:
break;
}
animationsetFillAfter(true);
animationsetDuration(duration);
animationsetStartOffset((i * 100) / (-1 + groupgetChildCount()));
animationsetInterpolator(new OvershootInterpolator(2F));
imageviewstartAnimation(animation);
}
}
/**
* 菜單顯示動畫
*
* @param group
* @param duration
*/
private void startAnimationOut(ViewGroup group,int duration){
for (int i = 1; i < groupgetChildCount(); i++) {
final ImageView imageview = (ImageView) group
getChildAt(i);
MarginLayoutParams mlp = (MarginLayoutParams) imageviewgetLayoutParams();
Animation animation = null;
switch (position) {
case LEFT_TOP:
animation = new TranslateAnimation(-mlpleftMargin+xOffset,0F,-mlptopMargin + yOffset,0F);
break;
case RIGHT_TOP:
animation = new TranslateAnimation(0F,mlprightMargin - xOffset,0F,-mlptopMargin + yOffset);
break;
case LEFT_BOTTOM:
animation = new TranslateAnimation(-mlpleftMargin+xOffset,0F, -yOffset + mlpbottomMargin,0F);
break;
case RIGHT_BOTTOM:
animation = new TranslateAnimation(0F,mlprightMargin-xOffset, 0F,-yOffset + mlpbottomMargin);
break;
default:
break;
}
animationsetFillAfter(true);animationsetDuration(duration);
animationsetStartOffset(((groupgetChildCount()-i) * 100)
/ (-1 + groupgetChildCount()));
animationsetInterpolator(new AnticipateInterpolator(2F));
imageviewstartAnimation(animation);
}
}
}
第四步:PathTestActivity.java以及用到的布局文件main.xml代碼如下：
PathTestActivity.java(基本沒修改代碼)代碼如下:
package comtutorpath;
import androidappActivity;
import androidosBundle;
public class PathTestActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
superonCreate(savedInstanceState);
setContentView(Rlayoutmain);
}
}
main.xml代碼如下:
<?xml version="0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemasandroidcom/apk/res/android"
xmlns:tutor="http://schemasandroidcom/apk/res/comtutorpath"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<comtutorpathPathMenuView
android:id="@+id/text"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tutor:position="right_bottom"
/>
</LinearLayout>
運行點擊效果如下:
圖1：默認是在右下方這里menuResIds定義了五個菜單
圖2：點擊紅色菜單，菜單收回.
下面我們修改main.xml的tutor屬性為left_bottom,并且修改PathMenuView.java中的menuResIds.
tutor:position="left_bottom"
效果如下:
圖3：自定義在左下角，六個菜單。
以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。
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