1、SlidingMenuView类
package com.zhuixingba.view;
import com.zhuixingba.main.R;
import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.VelocityTracker;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.ViewParent;
import android.widget.Scroller;
/**
* EffectSpace
*
* @author lance
*
*/
public class SlidingMenuView extends ViewGroup {
private static String LOG_TAG = "SlidingMenuView";
private static final int INVALID_SCREEN = -1;
private static final int SNAP_VELOCITY = 1000;
private int mDefaultScreen = 1;
private int mCurrentScreen;
private int mNextScreen = INVALID_SCREEN;
private Scroller mScroller;
private VelocityTracker mVelocityTracker;
private float mLastMotionX;
private float mLastMotionY;
private final static int TOUCH_STATE_REST = 0;
private final static int TOUCH_STATE_SCROLLING = 1;
public int mTouchState = TOUCH_STATE_REST;
private boolean mAllowLongPress;
private boolean mLocked;
private int mTouchSlop;
public int totalWidth = 0;
private CloseAnimation closeAnimation;
public SlidingMenuView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public SlidingMenuView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
initWorkspace();
postDelayed(new Runnable() {
@Override
public void run() {
scrollTo(findViewById(R.id.main_left_menu).getWidth(), 0);
}
}, 50);
}
private void initWorkspace() {
mScroller = new Scroller(getContext());
mCurrentScreen = mDefaultScreen;
mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
}
boolean isDefaultScreenShowing() {
return mCurrentScreen == mDefaultScreen;
}
public int getCurrentScreen() {
return mCurrentScreen;
}
public void setCurrentScreen(int currentScreen) {
mCurrentScreen = Math.max(0, Math.min(currentScreen, getChildCount() - 1));
invalidate();
}
void showDefaultScreen() {
setCurrentScreen(mDefaultScreen);
}
@Override
public void computeScroll() {
if (mScroller.computeScrollOffset()) {
scrollTo(mScroller.getCurrX(), mScroller.getCurrY());
} else if (mNextScreen != INVALID_SCREEN) {
mCurrentScreen = Math.max(0, Math.min(mNextScreen, getChildCount() - 1));
mNextScreen = INVALID_SCREEN;
clearChildrenCache();
}
if (closeAnimation != null) {
closeAnimation.closeMenuAnimation();
}
}
@Override
public void scrollTo(int x, int y) {
super.scrollTo(x, y);
postInvalidate();
}
@Override
protected void dispatchDraw(Canvas canvas) {
final int scrollX = getScrollX();
super.dispatchDraw(canvas);
canvas.translate(scrollX, 0);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
measureViews(widthMeasureSpec, heightMeasureSpec);
}
public void measureViews(int widthMeasureSpec, int heightMeasureSpec) {
View v1 = findViewById(R.id.main_left_menu);
v1.measure(v1.getLayoutParams().width + v1.getLeft() + v1.getRight(), heightMeasureSpec);
View v2 = findViewById(R.id.main_body);
v2.measure(widthMeasureSpec, heightMeasureSpec);
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
int childLeft = 0;
final int count = getChildCount();
for (int i = 0; i < count; i++) {
final View child = getChildAt(i);
if (child.getVisibility() != View.GONE) {
final int childWidth = child.getMeasuredWidth();
child.layout(childLeft, 0, childLeft + childWidth, child.getMeasuredHeight());
childLeft += childWidth;
}
}
totalWidth = childLeft;
}
@Override
public boolean dispatchUnhandledMove(View focused, int direction) {
if (direction == View.FOCUS_LEFT) {
if (getCurrentScreen() > 0) {
snapToScreen(getCurrentScreen() - 1);
return true;
}
} else if (direction == View.FOCUS_RIGHT) {
if (getCurrentScreen() < getChildCount() - 1) {
snapToScreen(getCurrentScreen() + 1);
return true;
}
}
return super.dispatchUnhandledMove(focused, direction);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
if (mLocked) {
return true;
}
final int action = ev.getAction();
if ((action == MotionEvent.ACTION_MOVE) && (mTouchState != TOUCH_STATE_REST)) {
return true;
}
final float x = ev.getX();
final float y = ev.getY();
switch (action) {
case MotionEvent.ACTION_MOVE:
final int xDiff = (int) Math.abs(x - mLastMotionX);
final int yDiff = (int) Math.abs(y - mLastMotionY);
final int touchSlop = mTouchSlop;
boolean xMoved = xDiff > touchSlop;
boolean yMoved = yDiff > touchSlop;
if (xMoved || yMoved) {
if (xMoved) {
// Scroll if the user moved far enough along the X axis
mTouchState = TOUCH_STATE_SCROLLING;
enableChildrenCache();
}
// Either way, cancel any pending longpress
if (mAllowLongPress) {
mAllowLongPress = false;
// Try canceling the long press. It could also have been
// scheduled
// by a distant descendant, so use the mAllowLongPress flag
// to block
// everything
final View currentScreen = getChildAt(mCurrentScreen);
currentScreen.cancelLongPress();
}
}
break;
case MotionEvent.ACTION_DOWN:
// Remember location of down touch
mLastMotionX = x;
mLastMotionY = y;
mAllowLongPress = true;
mTouchState = mScroller.isFinished() ? TOUCH_STATE_REST : TOUCH_STATE_SCROLLING;
break;
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_UP:
// Release the drag
clearChildrenCache();
mTouchState = TOUCH_STATE_REST;
mAllowLongPress = false;
break;
}
/*
* The only time we want to intercept motion events is if we are in the
* drag mode.
*/
return mTouchState != TOUCH_STATE_REST;
}
void enableChildrenCache() {
final int count = getChildCount();
for (int i = 0; i < count; i++) {
final View layout = (View) getChildAt(i);
layout.setDrawingCacheEnabled(true);
}
}
void clearChildrenCache() {
final int count = getChildCount();
for (int i = 0; i < count; i++) {
final View layout = (View) getChildAt(i);
layout.setDrawingCacheEnabled(false);
}
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if (mLocked) {
return true;
}
if (mVelocityTracker == null) {
mVelocityTracker = VelocityTracker.obtain();
}
mVelocityTracker.addMovement(ev);
final int action = ev.getAction();
final float x = ev.getX();
switch (action) {
case MotionEvent.ACTION_DOWN:
/*
* If being flinged and user touches, stop the fling. isFinished
* will be false if being flinged.
*/
if (!mScroller.isFinished()) {
mScroller.abortAnimation();
}
// Remember where the motion event started
mLastMotionX = x;
break;
case MotionEvent.ACTION_MOVE:
if (mTouchState == TOUCH_STATE_SCROLLING) {
// Scroll to follow the motion event
final int deltaX = (int) (mLastMotionX - x);
mLastMotionX = x;
if (deltaX < 0) {
if (getScrollX() > 0) {
scrollBy(Math.max(-getScrollX(), deltaX), 0);
}
} else if (deltaX > 0) {
final int availableToScroll = getChildAt(getChildCount() - 1).getRight() - getScrollX()
- getWidth();
if (availableToScroll > 0) {
scrollBy(Math.min(availableToScroll, deltaX), 0);
}
}
}
break;
case MotionEvent.ACTION_UP:
if (mTouchState == TOUCH_STATE_SCROLLING) {
final VelocityTracker velocityTracker = mVelocityTracker;
velocityTracker.computeCurrentVelocity(1000);
int velocityX = (int) velocityTracker.getXVelocity();
if (velocityX > SNAP_VELOCITY && mCurrentScreen > 0) {
// Fling hard enough to move left
snapToScreen(mCurrentScreen - 1);
} else if (velocityX < -SNAP_VELOCITY && mCurrentScreen < getChildCount() - 1) {
// Fling hard enough to move right
snapToScreen(mCurrentScreen + 1);
} else {
snapToDestination();
}
if (mVelocityTracker != null) {
mVelocityTracker.recycle();
mVelocityTracker = null;
}
}
mTouchState = TOUCH_STATE_REST;
break;
case MotionEvent.ACTION_CANCEL:
mTouchState = TOUCH_STATE_REST;
}
return true;
}
protected void snapToDestination() {
int whichScreen = 0;
int count = getChildCount();
int start = 0;
int end = 0;
int viewWidth = 0;
int tend = 0;
int tstart = 0;
final int scrollX = getScrollX();
for (int i = 0; i < count; i++) {
viewWidth = getChildAt(i).getWidth();
tend = end + viewWidth / 2;
if (i != 0) {
viewWidth = getChildAt(i - 1).getWidth();
}
tstart -= viewWidth;
if (scrollX > tstart && scrollX < tend) {
break;
}
start += viewWidth;
end += viewWidth;
whichScreen++;
}
snapToScreen(whichScreen);
}
/**
* 正常点击的切屏动画
*
* @param whichScreen
* 1代表侧边收起 ，0代表展开侧边
*
*/
public void snapToScreen(int whichScreen) {
enableChildrenCache();
whichScreen = Math.max(0, Math.min(whichScreen, getChildCount() - 1));
boolean changingScreens = whichScreen != mCurrentScreen;
mNextScreen = whichScreen;
View focusedChild = getFocusedChild();
if (focusedChild != null && changingScreens && focusedChild == getChildAt(mCurrentScreen)) {
focusedChild.clearFocus();
}
int newX = 0;
for (int i = 0; i < whichScreen; i++) {
newX += getChildAt(i).getWidth();
}
newX = Math.min(totalWidth - getWidth(), newX);
final int delta = newX - getScrollX();
// mScroller.startScroll(getScrollX(), 0, delta, 0, Math.abs(delta) *
// 2);
mScroller.startScroll(getScrollX(), 0, delta, 0, 500);
invalidate();
}
/**
*
* 点击左侧菜单的切屏动画
*
* @param whichScreen
*/
public void closeMenu_1(int whichScreen) {
enableChildrenCache();
whichScreen = Math.max(0, Math.min(whichScreen, getChildCount() - 1));
boolean changingScreens = whichScreen != mCurrentScreen;
mNextScreen = whichScreen;
View focusedChild = getFocusedChild();
if (focusedChild != null && changingScreens && focusedChild == getChildAt(mCurrentScreen)) {
focusedChild.clearFocus();
}
int newX = 0;
for (int i = 0; i < whichScreen; i++) {
newX += getChildAt(i).getWidth();
}
newX = Math.min(totalWidth - getWidth(), newX);
final int delta = newX - getScrollX();
mScroller.startScroll(getScrollX(), 0, delta - getWidth(), 0, 260);
invalidate();
}
/**
*
* 点击左侧菜单的切屏动画
*
* @param whichScreen
*/
public void closeMenu_2(int whichScreen) {
enableChildrenCache();
whichScreen = Math.max(0, Math.min(whichScreen, getChildCount() - 1));
boolean changingScreens = whichScreen != mCurrentScreen;
mNextScreen = whichScreen;
View focusedChild = getFocusedChild();
if (focusedChild != null && changingScreens && focusedChild == getChildAt(mCurrentScreen)) {
focusedChild.clearFocus();
}
int newX = 0;
for (int i = 0; i < whichScreen; i++) {
newX += getChildAt(i).getWidth();
}
newX = Math.min(totalWidth - getWidth(), newX);
final int delta = newX - getScrollX();
mScroller.startScroll(getScrollX(), 0, getWidth(), 0, 500);
invalidate();
}
public int getScreenForView(View v) {
int result = -1;
if (v != null) {
ViewParent vp = v.getParent();
int count = getChildCount();
for (int i = 0; i < count; i++) {
if (vp == getChildAt(i)) {
return i;
}
}
}
return result;
}
public void unlock() {
mLocked = false;
}
public void lock() {
mLocked = true;
}
void moveToDefaultScreen() {
snapToScreen(mDefaultScreen);
getChildAt(mDefaultScreen).requestFocus();
}
@Override
protected void onFinishInflate() {
// TODO Auto-generated method stub
super.onFinishInflate();
View child;
for (int i = 0; i < getChildCount(); i++) {
child = getChildAt(i);
child.setFocusable(true);
child.setClickable(true);
}
}
public void setCloseAnimation(CloseAnimation closeAnimation) {
this.closeAnimation = closeAnimation;
}
public interface CloseAnimation {
public void closeMenuAnimation();
}
}1、MainActivity主界面
package com.zhuixingba.main;
import com.zhuixingba.view.SlidingMenuView;
import com.zhuixingba.view.SlidingMenuView.CloseAnimation;
import android.os.Bundle;
import android.app.ActivityGroup;
import android.content.Intent;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Toast;
public class MainActivity extends ActivityGroup implements OnClickListener {
public static SlidingMenuView slidingMenuView;
private ViewGroup tabcontent;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
slidingMenuView = (SlidingMenuView) findViewById(R.id.main_menu_view);
tabcontent = (ViewGroup) slidingMenuView.findViewById(R.id.main_body);
initView();
}
/**
* 初始化控件
*/
private void initView() {
// 加载主页
Intent i = new Intent(this, HomePageActivity.class);
View v = getLocalActivityManager().startActivity(HomePageActivity.class.getName(), i).getDecorView();
tabcontent.removeAllViews();
tabcontent.addView(v);
findViewById(R.id.btn_homepage).setOnClickListener(this);
findViewById(R.id.btn_stars).setOnClickListener(this);
findViewById(R.id.btn_personal).setOnClickListener(this);
findViewById(R.id.btn_hotapp).setOnClickListener(this);
findViewById(R.id.btn_set).setOnClickListener(this);
findViewById(R.id.btn_exit).setOnClickListener(this);
tabcontent.setOnClickListener(this);
}
/**
* 点击事件
*/
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.btn_homepage:// 首页
showActivity(HomePageActivity.class);
break;
case R.id.btn_stars:// 关注明星
showActivity(StarsActivity.class);
break;
case R.id.btn_personal:// 个人资料
showActivity(PersonalActivity.class);
break;
case R.id.btn_hotapp:// 热点应用
showActivity(HotAPPActivity.class);
break;
case R.id.btn_set:// 设置
showActivity(SetActivity.class);
break;
case R.id.btn_exit:// 退出
this.finish();
break;
case R.id.main_body:
slidingMenuView.snapToScreen(1);
break;
default:
break;
}
}
/**
* 切换Activity的方法
*
* @param c
* 参数为Activity
*/
private void showActivity(Class<?> c) {
Intent i = new Intent(this, c);
View view = getLocalActivityManager().startActivity(c.getName(), i).getDecorView();
tabcontent.removeAllViews();
tabcontent.addView(view);
slidingMenuView.setCloseAnimation(new CloseAnimation() {
@Override
public void closeMenuAnimation() {
// TODO Auto-generated method stub
if (-slidingMenuView.getScrollX() == getWindowManager().getDefaultDisplay().getWidth()
- (slidingMenuView.totalWidth - getWindowManager().getDefaultDisplay().getWidth())) {
slidingMenuView.closeMenu_2(1);
}
}
});
slidingMenuView.closeMenu_1(1);
}
private long exitTime = 0;
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_DOWN) {
if (slidingMenuView.getCurrentScreen() == 1) {
if ((System.currentTimeMillis() - exitTime) > 2000) {
Toast.makeText(getApplicationContext(), "再按一次退出程序", Toast.LENGTH_SHORT).show();
exitTime = System.currentTimeMillis();
} else {
finish();
System.exit(0);
}
} else {
slidingMenuView.snapToScreen(1);
}
return true;
} else if (keyCode == KeyEvent.KEYCODE_MENU && event.getAction() == KeyEvent.ACTION_DOWN) {
if (slidingMenuView.getCurrentScreen() == 1) {
slidingMenuView.snapToScreen(0);
} else {
slidingMenuView.snapToScreen(1);
}
return true;
}
return super.onKeyDown(keyCode, event);
}
}
3、MainActivity界面xml文件
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<com.zhuixingba.view.SlidingMenuView
android:id="@+id/main_menu_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:id="@+id/main_left_menu"
android:layout_width="240dip"
android:layout_height="fill_parent"
android:background="@android:color/darker_gray"
android:orientation="vertical"
android:padding="5dip" >
<Button
android:id="@+id/btn_homepage"
android:layout_width="240dip"
android:layout_height="wrap_content"
android:text="@string/left_menu_homepage" />
<Button
android:id="@+id/btn_stars"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/left_menu_stars" />
<Button
android:id="@+id/btn_personal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/left_menu_personal" />
<Button
android:id="@+id/btn_hotapp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/left_menu_hotapp" />
<Button
android:id="@+id/btn_set"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/left_menu_set" />
<Button
android:id="@+id/btn_exit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/left_menu_exit" />
</LinearLayout>
<FrameLayout
android:id="@+id/main_body"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</FrameLayout>
</com.zhuixingba.view.SlidingMenuView>
</RelativeLayout>4、菜单界面点击显示左边菜单事件
if (MainActivity.slidingMenuView.getCurrentScreen() == 1) {
MainActivity.slidingMenuView.snapToScreen(0);
} else {
MainActivity.slidingMenuView.snapToScreen(1);
}