学步园

package com.example.fragmentanimation;

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.util.Log;
import android.view.KeyEvent;

import com.example.fragmentanimation.OneFragment.OnNewFragemntListener;

public class MainActivity extends FragmentActivity implements OnNewFragemntListener {
	
	private static final String TAG = MainActivity.class.getSimpleName();

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		findView();
	}

	private void findView() {
		FragmentManager manager = getSupportFragmentManager();
		FragmentTransaction ft = manager.beginTransaction();
		ft.setCustomAnimations(R.anim.push_left_in,R.anim.push_left_in); 
		
		OneFragment oneFragment = (OneFragment) manager.findFragmentByTag("one");
		if(oneFragment==null){
			oneFragment = new OneFragment();
			Log.e(TAG, "new OneFragment");
		}
		
		ft.replace(R.id.fl_container, oneFragment, "one");
		ft.commit();
	}

	@Override
	public void onNewFragemnt() {
		
		FragmentManager manager = getSupportFragmentManager();
		FragmentTransaction ft = manager.beginTransaction();
		//设置替换和退栈的动画
		ft.setCustomAnimations(R.anim.push_left_in,R.anim.push_left_in,R.anim.back_left_in,R.anim.back_right_out); 
//		ft.setCustomAnimations(R.anim.push_left_in,R.anim.push_left_in); 
		
		TwoFragment twoFragment = (TwoFragment) manager.findFragmentByTag("two");
		if(twoFragment==null){
			Log.e(TAG, "new TwoFragment");
			twoFragment = new TwoFragment();
		}
		
		ft.replace(R.id.fl_container, twoFragment, "two");
		
		ft.addToBackStack(null);
		
		ft.commit();
	}
	
	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {
		
		FragmentManager fm = getSupportFragmentManager();
		
		int count = fm.getBackStackEntryCount();
		
		if(keyCode==KeyEvent.KEYCODE_BACK && count>0){
			
			Log.e(TAG, "back to list "+count);
			
			fm.popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE); 
			
			return true;
		}
		return super.onKeyDown(keyCode, event);
	}
}

如果后退也需要动画的的话，需要用 FragmentTransaction.setCustomAnimations(R.anim.push_left_in,R.anim.push_left_in,R.anim.back_left_in,R.anim.back_right_out); 
同时设置 enter/exit 和popEnter/popExit动画

package com.example.fragmentanimation;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;

public class OneFragment extends Fragment implements OnClickListener {

	private static final String TAG = OneFragment.class.getSimpleName();
	
	private OnNewFragemntListener mCallback;

	@Override
	public void onAttach(Activity activity) {
		try {
			mCallback = (OnNewFragemntListener) activity;
		} catch (ClassCastException e) {
			throw new ClassCastException(activity.toString()
					+ " must implement OnNewFragemntListener");
		}
		super.onAttach(activity);
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {

		Log.e(TAG, "onCreateView");

		View view = inflater.inflate(R.layout.fragment_one, null);
		findView(view);
		
		return view;
	}

	private void findView(View view) {
		
		Button bt_open = (Button) view.findViewById(R.id.bt_open);
		bt_open.setOnClickListener(this);
	}
	
	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.bt_open:
			
			Log.e(TAG, "open TwoFragment");
			//回调Activity中的方法
			mCallback.onNewFragemnt();
			
			break;

		default:
			break;
		}
	}
	/**
	 * 后退 回调接口
	 */
	public interface OnNewFragemntListener {

		public void onNewFragemnt();
	}
	
}

package com.example.fragmentanimation;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;

public class TwoFragment extends Fragment implements OnClickListener {

	private static final String TAG = TwoFragment.class.getSimpleName();
	
	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		Log.e(TAG, "onCreateView");
		
		View view = inflater.inflate(R.layout.fragment_two, null);
		findView(view);
		
		return view;
	}

	private void findView(View view) {
		
		Button bt_back = (Button) view.findViewById(R.id.bt_back);
		
		bt_back.setOnClickListener(this);
	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.bt_back:
			
			Log.e(TAG, "back to previous");
			
			//后退
			getActivity().getSupportFragmentManager().popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE);
			
			break;

		default:
			break;
		}
	}
	
}

工程源码下载：http://download.csdn.net/detail/fx_sky/6607155