package com.lq.activity;
import java.util.ArrayList;
import java.util.List;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager.OnBackStackChangedListener;
import android.support.v4.app.FragmentTransaction;
import android.util.Log;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.KeyEvent;
import android.view.MotionEvent;
import com.google.analytics.tracking.android.EasyTracker;
import com.lq.fragment.FrameLocalMusicFragment;
import com.lq.fragment.MenuFragment;
import com.lq.fragment.PromptDialogFragment;
import com.lq.service.MusicService;
import com.lq.xpressmusic.R;
import com.slidingmenu.lib.SlidingMenu;
import com.umeng.analytics.MobclickAgent;
/**
* @author lq 2013-6-1 lq2625304@gmail.com
* */
public class MainContentActivity extends FragmentActivity implements
OnBackStackChangedListener {
public interface OnBackKeyPressedListener {
public abstract void onBackKeyPressed();
}
private static final String TAG = MainContentActivity.class.getSimpleName();
public static final int MESSAGE_SWITCH_TO_PLAY_IMAGE = 0;
public static final int MESSAGE_SWITCH_TO_PAUSE_IMAGE = 1;
/** 手势检测 */
private GestureDetector mDetector = null;
/** 侧滑菜单控件 */
private SlidingMenu mSlidingMenu = null;
private List<Fragment> mFragmentList = new ArrayList<Fragment>();
private Fragment mCurrentFragment = null;
private int mBackStackEntryCount = 0;
private List<OnBackKeyPressedListener> mBackKeyPressedListeners = new ArrayList<OnBackKeyPressedListener>();
@Override
protected void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "onCreate");
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_content);
getSupportFragmentManager().addOnBackStackChangedListener(this);
mBackStackEntryCount = getSupportFragmentManager()
.getBackStackEntryCount();
// 初始化SlidingMenu，并为其填充Fragment
initSlidingMenu();
initPopulateFragment();
// 设置滑动手势
mDetector = new GestureDetector(new SimpleOnGestureListener() {
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2,
float velocityX, float velocityY) {
// 从左向右滑动
if (e1 != null && e2 != null) {
if (e1.getX() - e2.getX() > 120) {
switchToPlayer();
return true;
}
}
return false;
}
});
}
/** 设置SlidingMenu */
private void initSlidingMenu() {
mSlidingMenu = new SlidingMenu(this);
// 1.为SlidingMenu宿主一个Activity
mSlidingMenu.attachToActivity(this, SlidingMenu.SLIDING_WINDOW);
// 2.为SlidingMenu指定布局
mSlidingMenu.setMenu(R.layout.layout_menu);
// 3.设置SlidingMenu从何处可以滑出
mSlidingMenu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
// 4.设置SlidingMenu的滑出方向
mSlidingMenu.setMode(SlidingMenu.LEFT);
// 5.设置SlidingMenu的其他参数
mSlidingMenu.setShadowWidthRes(R.dimen.shadow_width);
mSlidingMenu.setShadowDrawable(R.drawable.shadow);
mSlidingMenu.setBehindOffsetRes(R.dimen.slidingmenu_offset);
mSlidingMenu.setFadeDegree(0.35f);
mSlidingMenu.setBehindScrollScale(0.0f);// 滑动时侧滑菜单的内容静止不动
}
/** 为SlidingMenu和Content填充Fragment */
private void initPopulateFragment() {
MenuFragment menuFragment = new MenuFragment();
mCurrentFragment = new FrameLocalMusicFragment();
FragmentTransaction fragmentTransaction = getSupportFragmentManager()
.beginTransaction();
fragmentTransaction.replace(R.id.frame_menu, menuFragment, menuFragment
.getClass().getName());
fragmentTransaction.replace(R.id.frame_main, mCurrentFragment,
mCurrentFragment.getClass().getName());
fragmentTransaction.commit();
mFragmentList.add(mCurrentFragment);
}
public SlidingMenu getSlidingMenu() {
return mSlidingMenu;
}
@Override
protected void onStart() {
super.onStart();
EasyTracker.getInstance(this).activityStart(this);
}
@Override
protected void onResume() {
super.onResume();
MobclickAgent.onResume(this);
}
@Override
protected void onPause() {
super.onPause();
MobclickAgent.onPause(this);
}
@Override
protected void onStop() {
super.onStop();
EasyTracker.getInstance(this).activityStop(this);
}
@Override
protected void onDestroy() {
Log.i(TAG, "onDestroy");
super.onDestroy();
mFragmentList.clear();
mFragmentList = null;
mBackKeyPressedListeners.clear();
mBackKeyPressedListeners = null;
}
public void registerBackKeyPressedListener(OnBackKeyPressedListener listener) {
if (!mBackKeyPressedListeners.contains(listener)) {
mBackKeyPressedListeners.add(listener);
}
}
public void unregisterBackKeyPressedListener(
OnBackKeyPressedListener listener) {
mBackKeyPressedListeners.remove(listener);
}
public void switchToPlayer() {
startActivity(new Intent(MainContentActivity.this, PlayerActivity.class));
overridePendingTransition(R.anim.push_left_in, R.anim.push_left_out);
}
/**
* 切换主页内容
*/
public void switchContent(String fragmentName) {
Fragment f = null;
boolean existed = false;
if (!mCurrentFragment.getClass().getName().equals(fragmentName)) {
// 遍历当前已打开的Fragment集合
for (int i = 0; i < mFragmentList.size(); i++) {
// 如果要求切换至的fragment已经存在，则直接把已经存在的显示出来
if (mFragmentList.get(i).getClass().getName()
.equals(fragmentName)) {
existed = true;
f = mFragmentList.get(i);
getSupportFragmentManager().beginTransaction()
.hide(mCurrentFragment).show(f).commit();
mCurrentFragment = f;
break;
}
}
// 如果不存在，则新建
if (!existed) {
f = Fragment.instantiate(getApplicationContext(), fragmentName);
mFragmentList.add(f);
getSupportFragmentManager().beginTransaction()
.hide(mCurrentFragment).add(R.id.frame_main, f)
.commit();
mCurrentFragment = f;
}
}
mSlidingMenu.showContent();
}
public void setSlideEnable(boolean slidable) {
if (slidable) {
mSlidingMenu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
} else {
mSlidingMenu.setTouchModeAbove(SlidingMenu.TOUCHMODE_NONE);
}
}
public void exit() {
stopService(new Intent(MainContentActivity.this, MusicService.class));
MainContentActivity.this.finish();
}
@Override
public boolean onTouchEvent(MotionEvent event) {
return this.mDetector.onTouchEvent(event);
}
@Override
public void onBackPressed() {
if (mBackKeyPressedListeners.size() != 0) {
for (OnBackKeyPressedListener listener : mBackKeyPressedListeners) {
listener.onBackKeyPressed();
}
}
if (getSupportFragmentManager().getBackStackEntryCount() > 0) {
getSupportFragmentManager().popBackStackImmediate();
} else if (mCurrentFragment != null
&& mCurrentFragment.getChildFragmentManager()
.getBackStackEntryCount() > 0) {
if (mCurrentFragment.getView() != null) {
mCurrentFragment.getChildFragmentManager()
.popBackStackImmediate();
}
} else {
// 规定在显示菜单时才可退出程序，按返回键弹出侧滑菜单
if (mSlidingMenu.isMenuShowing()) {
// 显示菜单时，按返回键退出程序
PromptDialogFragment f = PromptDialogFragment
.newInstance(
getResources().getString(
R.string.are_you_sure_to_exit),
new OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
MainContentActivity.this.exit();
}
});
f.show(getSupportFragmentManager(), null);
} else {
// 菜单没有显示，就弹出菜单
mSlidingMenu.showMenu();
}
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_MENU:
mSlidingMenu.toggle();
break;
default:
break;
}
return super.onKeyDown(keyCode, event);
}
@Override
public void onBackStackChanged() {
// 如果后退栈条目数目增加了
if (mBackStackEntryCount < getSupportFragmentManager()
.getBackStackEntryCount()) {
mBackStackEntryCount++;
} else {// 如果后退栈条目数目减少了
mBackStackEntryCount--;
}
}
}