Android开发笔记（一百零一）滑出式菜单

import com.example.exmslidingmenu.util.MetricsUtil;

import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.Activity;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.widget.LinearLayout;

public class MoveActivity extends Activity implements OnTouchListener,OnClickListener {
	private static final String TAG = "MoveActivity";

	private int screenWidth;
	private float rawX=0;
	private LinearLayout.LayoutParams menuParams;
	private View ll_menu_move;
	private View ll_content_move;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_move);
		initView();
	}
	
	@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
	private void initView() {
		ll_menu_move = (View) findViewById(R.id.ll_menu_move);
		ll_content_move = (View) findViewById(R.id.ll_content_move);
		
		screenWidth = MetricsUtil.getWidth(this);
		menuParams = (LinearLayout.LayoutParams) ll_menu_move.getLayoutParams();
		menuParams.width = screenWidth;
		menuParams.leftMargin = -screenWidth;
		ll_content_move.getLayoutParams().width = screenWidth;
		ll_menu_move.setOnClickListener(this);
		ll_content_move.setOnTouchListener(this);
	}

	@SuppressLint("ClickableViewAccessibility")
	@Override
	public boolean onTouch(View v, MotionEvent event) {
		int distanceX = (int) (event.getRawX() - rawX);
		switch (event.getAction()) {
		case MotionEvent.ACTION_DOWN:
			rawX = event.getRawX();
			break;
		case MotionEvent.ACTION_MOVE:
			if (distanceX > 0) {
				menuParams.leftMargin = -screenWidth + distanceX;
				ll_menu_move.setLayoutParams(menuParams);
			}
			break;
		case MotionEvent.ACTION_UP:
			if (distanceX < screenWidth/2) {
				mHandler.postDelayed(new ScrollRunnable(-1, distanceX), mTimeGap);
			} else {
				mHandler.postDelayed(new ScrollRunnable(1, distanceX), mTimeGap);
			}
			break;
		}
		return true;
	}

	private int mTimeGap = 20;
	private int mDistanceGap = 20;
	private Handler mHandler = new Handler();
	private class ScrollRunnable implements Runnable {
		private int mDirection;
		private int mDistance;
		public ScrollRunnable(int direction, int distance) {
			mDirection = direction;
			mDistance = distance;
		}
		
		@Override
		public void run() {
			if (mDirection==-1 && mDistance>0) {
				mDistance -= mDistanceGap;
				if (mDistance < 0) {
					mDistance = 0;
				}
				menuParams.leftMargin = -screenWidth + mDistance;
				ll_menu_move.setLayoutParams(menuParams);
				mHandler.postDelayed(new ScrollRunnable(-1, mDistance), mTimeGap);
			} else if (mDirection==1 && mDistance<screenWidth) {
				mDistance += mDistanceGap;
				if (mDistance > screenWidth) {
					mDistance = screenWidth;
				}
				menuParams.leftMargin = -screenWidth + mDistance;
				ll_menu_move.setLayoutParams(menuParams);
				mHandler.postDelayed(new ScrollRunnable(1, mDistance), mTimeGap);
			}
		}
	}
	@Override
	public void onClick(View v) {
		if (v.getId() == R.id.ll_menu_move) {
			menuParams.leftMargin = -screenWidth;
			ll_menu_move.setLayoutParams(menuParams);
		}
	}

}

	public void cleanFragments() {
		for (Fragment fragment : mFragments) {
			mFragmentMgr
				.beginTransaction()
				.detach((ColorFragment) fragment)
				.commit();
			mFragmentMgr
				.beginTransaction()
				.remove((ColorFragment) fragment)
				.commit();
		}
	}

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.View;

import com.jeremyfeinstein.slidingmenu.lib.SlidingMenu;
import com.jeremyfeinstein.slidingmenu.lib.app.SlidingFragmentActivity;

public abstract class BaseContentActivity extends SlidingFragmentActivity {

	protected Fragment mContent;
	protected Fragment mMenuLeft;
	protected Fragment mMenuRight;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		int mode = SlidingMenu.LEFT;
		Bundle bundle = getIntent().getExtras();
		if (bundle != null) {
			mode = bundle.getInt("mode", SlidingMenu.LEFT);
		}
		if (findViewById(R.id.menu_frame) == null) {
			setBehindContentView(R.layout.menu_frame);
			getSlidingMenu().setMode(mode);
			getSlidingMenu().setSlidingEnabled(true);
			getSlidingMenu().setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
		} else {
			View v = new View(this);
			setBehindContentView(v);
			getSlidingMenu().setSlidingEnabled(false);
			getSlidingMenu().setTouchModeAbove(SlidingMenu.TOUCHMODE_NONE);
		}

		if (savedInstanceState != null) {
			mContent = getSupportFragmentManager().getFragment(
					savedInstanceState, "mContent");
		}
		if (mContent == null) {
			mContent = newDefaultContent();
		}
		setFragment(R.id.content_frame, mContent);

		mMenuLeft = newMenuFragment();
		setFragment(R.id.menu_frame, mMenuLeft);

		SlidingMenu sm = getSlidingMenu();
		sm.setBehindOffsetRes(R.dimen.slidingmenu_offset);
		sm.setShadowWidthRes(R.dimen.shadow_width);
		sm.setBehindScrollScale(0.25f);
		sm.setFadeDegree(0.25f);
		if (mode == SlidingMenu.LEFT_RIGHT) {
			sm.setSecondaryMenu(R.layout.menu_frame_two);
			mMenuRight = newMenuFragment();
			setFragment(R.id.menu_frame_two, mMenuRight);
			sm.setSecondaryShadowDrawable(R.drawable.shadow_right);
		}
		sm.setShadowDrawable((mode==SlidingMenu.RIGHT)?R.drawable.shadow_right:R.drawable.shadow_left);
	}

	protected void setFragment(int resid, Fragment fragment) {
		getSupportFragmentManager()
			.beginTransaction()
			.replace(resid, fragment)
			.commit();
	}

	protected abstract Fragment newDefaultContent();

	protected abstract Fragment newMenuFragment();
	
	@Override
	public void onSaveInstanceState(Bundle outState) {
		super.onSaveInstanceState(outState);
		getSupportFragmentManager().putFragment(outState, "mContent", mContent);
	}

}

import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;

public class BaseMenuFragment extends ListFragment {
	protected View mView;
	protected Context mContext;

	protected OnSlidingMenuListener onSlidingMenuListener;
	public void setOnSlidingMenuListener(OnSlidingMenuListener listener) {
		this.onSlidingMenuListener = listener;
	}
	
	protected int mLayoutId;
	public BaseMenuFragment(int layout_id) {
		mLayoutId = layout_id;
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
		mContext = getActivity();
		mView = inflater.inflate(mLayoutId, null);
		return mView;
	}

	@Override
	public void onListItemClick(ListView lv, View v, int position, long id) {
		if (onSlidingMenuListener != null) {
			onSlidingMenuListener.onMenuItemClick(position);
		}
	}
	
}