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Fragment进阶（三）----->栈的种种操作

时间：2015-08-13 15:59:10      阅读：178      评论：0      收藏：0      [点我收藏+]

标签：fragmentactivity   getsupportfragmentma   begintransaction   fragmenttransaction   addtobackstack   

技术分享

activity_main.xml

<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/btn_add_frag1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="ADD  Fragment1" />

    <Button
        android:id="@+id/btn_add_frag2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="ADD  Fragment2" />

    <Button
        android:id="@+id/btn_remove_frag2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Remove  Fragment2" />

    <Button
        android:id="@+id/btn_repalce_frag1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="replace  Fragment1" />

    <FrameLayout
        android:id="@+id/fragment_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>

fragment1.xml

<?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:background="#ff00f0"
    android:orientation="vertical" >
    
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="This is fragment 1"
        android:textColor="#000000"
        android:textSize="25sp" />

</LinearLayout>

fragment2.xml

<?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:background="#ffff00"
    android:orientation="vertical" >
    
    <TextView
        android:id="@+id/fragment2_tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="This is fragment 2"
        android:textColor="#000000"
        android:textSize="25sp" />
    
</LinearLayout>

Fragment1

package com.example.harvicblog3_1;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.util.Log;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.Toast;

import java.util.List;

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

}

Fragment2

package com.example.harvicblog3_1;

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

public class Fragment2 extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        return inflater.inflate(R.layout.fragment2, container, false);
    }
}

MainActivity

package com.example.harvicblog3_1;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.widget.Button;
import android.view.View;


public class MainActivity extends FragmentActivity implements View.OnClickListener {

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

        Button btnAddFrag1 = (Button) findViewById(R.id.btn_add_frag1);
        Button btnAddFrag2 = (Button) findViewById(R.id.btn_add_frag2);
        Button btnRemoveFrage2 = (Button) findViewById(R.id.btn_remove_frag2);
        Button btnReplaceFrage1 = (Button) findViewById(R.id.btn_repalce_frag1);

        btnAddFrag1.setOnClickListener(this);
        btnAddFrag2.setOnClickListener(this);
        btnRemoveFrage2.setOnClickListener(this);
        btnReplaceFrage1.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        int id = v.getId();
        switch (id) {
            case R.id.btn_add_frag1: {
                Fragment1 fragment1 = new Fragment1();
                addFragment(fragment1, "fragment1");
            }
            break;
            case R.id.btn_add_frag2: {
                Fragment2 fragment2 = new Fragment2();
                addFragment(fragment2, "fragment2");
            }
            break;
            case R.id.btn_remove_frag2: {
                removeFragment2();
            }
            break;
            case R.id.btn_repalce_frag1: {
                replaceFragment1();
            }
        }

    }

    private void addFragment(Fragment fragment, String tag) {
        FragmentManager manager = getSupportFragmentManager();
        FragmentTransaction transaction = manager.beginTransaction();
        transaction.add(R.id.fragment_container, fragment, tag);
        transaction.commit();
    }

    private void removeFragment2() {
        FragmentManager manager = getSupportFragmentManager();
        Fragment fragment = manager.findFragmentByTag("fragment2");
        FragmentTransaction transaction = manager.beginTransaction();
        transaction.remove(fragment);
        transaction.commit();
    }

    private void replaceFragment1() {
        FragmentManager manager = getSupportFragmentManager();
        Fragment2 fragment2 = new Fragment2();
        FragmentTransaction transaction = manager.beginTransaction();
        transaction.replace(R.id.fragment_container, fragment2);
        transaction.commit();
    }
}

**************************************************************操作二*************************************

技术分享

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <Button
            android:id="@+id/btn_add_frag1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="ADD  Fragment1"
            android:layout_weight="1" />

        <Button
            android:id="@+id/btn_add_frag2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="ADD  Fragment2"
            android:layout_weight="1" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <Button
            android:id="@+id/btn_add_frag3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="ADD  Fragment3" />

        <Button
            android:id="@+id/btn_add_frag4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="ADD  Fragment4" />
    </LinearLayout>

    <Button
        android:id="@+id/btn_pop_back_stack"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="popBackStack" />

    <Button
        android:id="@+id/btn_back_to_frg2_0"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="BackToFrag2_0" />

    <FrameLayout
        android:id="@+id/fragment_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

fragment1.xml  fragment2.xml fragment3.xml  fragment4.xml

<?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:background="#ff00f0"
    android:orientation="vertical" >
    
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="This is fragment 1"
        android:textColor="#000000"
        android:textSize="25sp" />

</LinearLayout>

Fragment1  Fragment2  Fragment3  Fragment4

package com.example.harvicblog3_2;

import android.os.Bundle;
import android.support.v4.app.Fragment;
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) {
		return inflater.inflate(R.layout.fragment1, container, false);
	}

}


package com.example.harvicblog3_2;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentManager.OnBackStackChangedListener;
import android.support.v4.app.FragmentTransaction;
import android.util.Log;
import android.view.View;
import android.widget.Button;

public class MainActivity extends FragmentActivity implements
		View.OnClickListener {
	private int stackID1, stackID2, stackID3, stackID4;
	private OnBackStackChangedListener listener;

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

		Button btnAddFrag1 = (Button) findViewById(R.id.btn_add_frag1);
		Button btnAddFrag2 = (Button) findViewById(R.id.btn_add_frag2);
		Button btnAddFrag3 = (Button) findViewById(R.id.btn_add_frag3);
		Button btnAddFrag4 = (Button) findViewById(R.id.btn_add_frag4);
		Button btnPopBackStack = (Button) findViewById(R.id.btn_pop_back_stack);
		Button btnBackToFrag2_0 = (Button) findViewById(R.id.btn_back_to_frg2_0);

		btnAddFrag1.setOnClickListener(this);
		btnAddFrag2.setOnClickListener(this);
		btnAddFrag3.setOnClickListener(this);
		btnAddFrag4.setOnClickListener(this);
		btnPopBackStack.setOnClickListener(this);
		btnBackToFrag2_0.setOnClickListener(this);

		//Fragment管理器、添加回退监听
		FragmentManager manager = getSupportFragmentManager();
		listener = new FragmentManager.OnBackStackChangedListener() {

			@Override
			public void onBackStackChanged() {
				Log.d("qijian", "backstack changed");
			}
		};
		manager.addOnBackStackChangedListener(listener);
	}

	//移除监听
	@Override
	protected void onDestroy() {
		super.onDestroy();
		FragmentManager manager = getSupportFragmentManager();
		manager.removeOnBackStackChangedListener(listener);
	}

	@Override
	public void onClick(View v) {
		int id = v.getId();
		switch (id) {
		case R.id.btn_add_frag1: {
			Fragment1 fragment1 = new Fragment1();
			stackID1 = addFragment(fragment1, "fragment1");
		}
			break;
		case R.id.btn_add_frag2: {
			Fragment2 fragment2 = new Fragment2();
			stackID2 = addFragment(fragment2, "fragment2");
		}
			break;
		case R.id.btn_add_frag3: {
			Fragment3 fragment3 = new Fragment3();
			stackID3 = addFragment(fragment3, "fragment3");
		}
			break;
		case R.id.btn_add_frag4: {
			Fragment4 fragment4 = new Fragment4();
			stackID4 = addFragment(fragment4, "fragment4");
		}
			break;
			//类似于back键，回退
		case R.id.btn_pop_back_stack: {
			popBackStack();
		}
			break;
		case R.id.btn_back_to_frg2_0: {
			popBackStackToFrag2_0();
		}
			break;
		}
	}

	private int addFragment(Fragment fragment, String stackName) {
		FragmentManager manager = getSupportFragmentManager();
		FragmentTransaction transaction = manager.beginTransaction();
		transaction.add(R.id.fragment_container, fragment);
		transaction.addToBackStack(stackName);
		return transaction.commit();
	}

	private void popBackStack() {
		FragmentManager manager = getSupportFragmentManager();
		manager.popBackStack();
	}

	private void popBackStackToFrag2_0() {
		FragmentManager manager = getSupportFragmentManager();
		manager.popBackStack("fragment2", 0);// 方法一,通过TAG回退
		// manager.popBackStack(stackID2, 0);//方法二,通过Transaction ID回退
	}

}

*******************************************操作三*******************************************

技术分享


activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/btn_add_frag1"
        android:text="ADD Frag1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/btn_add_other_frags"
        android:text="ADD Frag2,3,4"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <Button
        android:id="@+id/btn_popBackStack"
        android:text="popBackStack"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <FrameLayout
        android:id="@+id/fragment_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></FrameLayout>

</LinearLayout>

fragment1.xml  fragment2.xml fragment3.xml  fragment4.xml

<?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:background="#ff00f0"
    android:orientation="vertical" >
    
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="This is fragment 1"
        android:textColor="#000000"
        android:textSize="25sp" />

</LinearLayout>

Fragment1  Fragment2  Fragment3  Fragment4
package com.example.harvicblog3_2;

import android.os.Bundle;
import android.support.v4.app.Fragment;
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) {
		return inflater.inflate(R.layout.fragment1, container, false);
	}

}
MainActivity

package com.example.harvicblog3_3;

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.View;
import android.widget.Button;

public class MainActivity extends FragmentActivity implements
		View.OnClickListener {

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

		Button btnAddFrag1 = (Button) findViewById(R.id.btn_add_frag1);
		Button btnAddOtherFrags = (Button) findViewById(R.id.btn_add_other_frags);
		Button btnPopStack = (Button) findViewById(R.id.btn_popBackStack);

		btnAddFrag1.setOnClickListener(this);
		btnAddOtherFrags.setOnClickListener(this);
		btnPopStack.setOnClickListener(this);
	}

	@Override
	public void onClick(View v) {
		int id = v.getId();
		switch (id) {
		case R.id.btn_add_frag1: {
			addFragment1();
		}
			break;
		case R.id.btn_add_other_frags: {
			addOtherFragments();
		}
			break;
		case R.id.btn_popBackStack: {
			popBackStack();
		}
			break;
		}
	}

	private void addFragment1() {
		Fragment1 fragment1 = new Fragment1();
		FragmentManager manager = getSupportFragmentManager();
		FragmentTransaction transaction = manager.beginTransaction();
		transaction.add(R.id.fragment_container, fragment1);
		transaction.addToBackStack("fragment1");
		transaction.commit();
	}

	/**
	 * 、首先，添加Fragment1，提交一次事务 2、然后，一次添加Fragment2，Fragment3，Fragment4，然后提交一次事务
	 * 3、利用popBackStack
	 * ()将顶层事务出栈，可以看到把Fragment2，Fragment3，Fragment4一次出栈，界面显示在了Fragment1的位置
	 * ，这就充分说明了，回滚是以提交的事务为单位进行的！
	 */
	private void addOtherFragments() {
		Fragment2 fragment2 = new Fragment2();
		Fragment3 fragment3 = new Fragment3();
		Fragment4 fragment4 = new Fragment4();
		FragmentManager manager = getSupportFragmentManager();
		FragmentTransaction transaction = manager.beginTransaction();
		transaction.add(R.id.fragment_container, fragment2);
		transaction.add(R.id.fragment_container, fragment3);
		transaction.add(R.id.fragment_container, fragment4);
		transaction.addToBackStack("other fragments");
		transaction.commit();
	}

	private void popBackStack() {
		FragmentManager manager = getSupportFragmentManager();
		manager.popBackStack();
	}
}


版权声明：本文为博主原创文章，未经博主允许不得转载。

Fragment进阶（三）----->栈的种种操作

标签：fragmentactivity   getsupportfragmentma   begintransaction   fragmenttransaction   addtobackstack   

原文地址：http://blog.csdn.net/u013210620/article/details/47611707
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