android FragmentActivity以及Fragment的学习_com.example.fragmentproject.mainactivity.detailsfr-优快云博客

FragmentActivity中有多个Fragment的效果，这里我们不用ViewPager

MainActivity的代码：

package com.example.fragmentdemo;

import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {
	private FragmentManager mFragmentManager;
	private Fragment1 fragment1;
	private Fragment2 fragment2;
	private Button button1;
	private FragmentTransaction fragmentTransaction;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		//新建两个Fragment
		fragment1 = new Fragment1();
		fragment2 = new Fragment2();
		mFragmentManager = getFragmentManager();
		//Fragment事务
		fragmentTransaction = mFragmentManager.beginTransaction();
		//增加执行的动画效果 动画不能用我们的Tween动画，后面会有代码
		fragmentTransaction.setCustomAnimations(R.anim.animation_view, R.anim.animation_view_exit);
		//加入两个Fragment，两个Fragment放入FrameLayout中
		fragmentTransaction.add(R.id.myFrameLayout, fragment1);
		fragmentTransaction.add(R.id.myFrameLayout, fragment2);
		//隐藏第二个先显示第一个
		fragmentTransaction.hide(fragment2);
		fragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
		
		fragmentTransaction.commit();
		button1 = (Button)findViewById(R.id.button1);
		button1.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				if(fragment2.isHidden()){
					fragmentTransaction = mFragmentManager.beginTransaction();
					//执行动画，隐藏fragment1，显示fragment2
					fragmentTransaction.setCustomAnimations(R.anim.animation_view, R.anim.animation_view_exit);
					fragmentTransaction.show(fragment2).hide(fragment1);
					//一定要commit
					fragmentTransaction.commit();
				}
			}
		});
		
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}
	
	@Override
	protected void onResume() {
		
		super.onResume();

		Log.i("Fragment", "fragment1:" + fragment1.isAdded());
		Log.i("Fragment", "fragment2:" + fragment2.isAdded());
	}

	
}

main.xml文件代码

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    <Button
		    android:id="@+id/button1"
		    android:layout_width="wrap_content"
		    android:layout_height="wrap_content"
		    android:text="button1"
		    ></Button>
    <FrameLayout
        android:id="@+id/myFrameLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal"
        >
    </FrameLayout>

</LinearLayout>

Fragment显示的动画代码，代码中用的是ObjectAnimator

<?xml version="1.0" encoding="utf-8"?>  
<set xmlns:android="http://schemas.android.com/apk/res/android" >  
        <objectAnimator android:interpolator="@android:interpolator/accelerate_cubic"  
            android:valueFrom="0"  
            android:valueTo="1"  
            android:valueType="floatType"  
            android:propertyName="alpha"  
            android:duration="2000"/>  
        <objectAnimator android:interpolator="@android:interpolator/accelerate_cubic"  
            android:valueFrom="0.0"  
            android:valueTo="1.0"  
            android:valueType="floatType"  
            android:propertyName="scaleX"  
            android:duration="2000"/>  
        <objectAnimator android:interpolator="@android:interpolator/accelerate_cubic" 
            android:valueFrom="0.0"  
            android:valueTo="1.0" 
            android:valueType="floatType"  
            android:propertyName="scaleY"  
            android:duration="2000"/>  
</set>

Fragment隐藏时动画代码：

<?xml version="1.0" encoding="utf-8"?>  
<set xmlns:android="http://schemas.android.com/apk/res/android" >  
        <objectAnimator android:interpolator="@android:interpolator/accelerate_cubic"  
            android:valueFrom="1"  
            android:valueTo="0"  
            android:valueType="floatType"  
            android:propertyName="alpha"  
            android:duration="2000"/> 
            <objectAnimator
                android:interpolator="@android:interpolator/accelerate_cubic"
                android:valueFrom="1.0"
                android:valueTo="0.0"
                android:propertyName="ScaleX"
                android:duration="2000"
                android:valueType="floatType"
                />
            <objectAnimator
                android:interpolator="@android:interpolator/accelerate_cubic"
                android:valueFrom="1.0"
                android:valueTo="0.0"
                android:valueType="floatType"
                android:propertyName="ScaleY"
                android:duration="2000"
                />
</set>

两个Fragment的代码

Fragment1的代码

package com.example.fragmentdemo;

import android.annotation.SuppressLint;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class Fragment1 extends Fragment{
	
	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		
		View fragment1 = inflater.inflate(R.layout.fragment1, null);
		return fragment1;
	}

}

fragment1.xml的代码：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
     android:background="#FFFF0000"
    >
</LinearLayout>

Fragment2的代码

package com.example.fragmentdemo;

import android.annotation.SuppressLint;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class Fragment2 extends Fragment{
	
	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		View fragment1 = inflater.inflate(R.layout.fragment2, null);
		return fragment1;
	}

}

fragment2.xml代码：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
     android:background="#FFFF00FF"
    >
    <TextView 
        android:id="@+id/ftv2"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="dsfadsfasdfdas"
        />

</LinearLayout>

小结，通过FragmentTransaction来显示和隐藏Fragment并有动画效果

代码下载