android中Fragment和Actvity相互跳转

最近项目有用到ViewPager+Fragment来构建选项卡，在实现Fragment和Activity跳转当中花了很多时间，下面来介绍下相互之间的通信及跳转：1、Fragment跳转到Activity由于我使用的ViewPager+Fragment来做的切换选项卡操作，其实也就是将多个Fragment加载到一个Activity中，这样我们可以在

onCreateView方法中获得布局文件中的控件，来进行事件监听，不过再获取中和Activity不同我们得通过getActivty来获得该Fragment的Acticity，其他和在Activity实现跳转操作一样，使用intent即可。

 public void onActivityCreated(Bundle savedInstanceState) {
about=(RelativeLayout)getActivity().findViewById(R.id.me_about);
login=(RelativeLayout)getActivity().findViewById(R.id.me_login);
setting=(RelativeLayout)getActivity().findViewById(R.id.me_setting);
qingjia=(RelativeLayout)getActivity().findViewById(R.id.me_qingjia);
ynnUrl=(RelativeLayout)getActivity().findViewById(R.id.ynnu_url);
gisUrl=(RelativeLayout)getActivity().findViewById(R.id.gis_url);

login.setOnClickListener(new MyOclickListener(0));
qingjia.setOnClickListener(new MyOclickListener(1));
setting.setOnClickListener(new MyOclickListener(2));
about.setOnClickListener(new MyOclickListener(3));
ynnUrl.setOnClickListener(new MyOclickListener(4));
gisUrl.setOnClickListener(new MyOclickListener(5));
super.onActivityCreated(savedInstanceState);
}
 2、Actvity跳转到Fragment：

Activity是不能直接跳转到Fragment的，我们只能通过Actvity跳转到加载Fragment的Activity中，通过传递相关的值到加载的Activity上，然后通过判断，跳转到相应的Fragment，具体实现如下：

About.java

package com.example.gis.gis;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;

public class AboutActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.about);
}

//监听顶部返回按钮
public void back(View v)
{ GisMainActivity.index=4;
Intent intent=new Intent(AboutActivity.this,GisMainActivity.class);
startActivity(intent);
this.finish();
}
}

对应界面：[/code]

GisMainActivity.java

package com.example.gis.gis;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.PagerAdapter;
import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import java.util.ArrayList;

public class GisMainActivity extends FragmentActivity implements View.OnClickListener {

private ViewPager tabPager;
public static int index=0;
public static final int TAB_HOME = 0;
public static final int TAB_GK = 1;
public static final int TAB_KY = 2;
public static final int TAB_Message = 3;
public static final int TAB_Me = 4;

private int curreIndex=0;
private LinearLayout tab_home,tab_gk,tab_ky,tab_message,tab_me;
private ImageView gisTab1,gisTab2,gisTab3,gisTab4,gisTab5;
private TextView textTab1,textTab2,textTab3,textTab4,textTab5;
private LayoutInflater inflater;
HomeFragment homefragment = new HomeFragment();
GkFragment gkFragment = new GkFragment();
KyFragment kyFragment = new KyFragment();
MessageFragment messageFragment = new MessageFragment();
MeFragment meFragment = new MeFragment();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
initView();
addListener();
}
//绑定组件

public void initView() {
tabPager = (ViewPager) findViewById(R.id.tabpager);
//tabPager.setOnPageChangeListener(new PageChangeListener());
tab_home=(LinearLayout)findViewById(R.id.tab_home);
tab_gk=(LinearLayout)findViewById(R.id.tab_gk);
tab_ky=(LinearLayout)findViewById(R.id.tab_ky);
tab_message=(LinearLayout)findViewById(R.id.tab_message);
tab_me=(LinearLayout)findViewById(R.id.tab_me);

gisTab1 = (ImageView) findViewById(R.id.home);
gisTab2 = (ImageView) findViewById(R.id.gk);
gisTab3 = (ImageView) findViewById(R.id.ky);
gisTab4 = (ImageView) findViewById(R.id.message);
gisTab5 = (ImageView) findViewById(R.id.me);
gisTab1 = (ImageView) findViewById(R.id.home);
gisTab2 = (ImageView) findViewById(R.id.gk);
gisTab3 = (ImageView) findViewById(R.id.ky);
gisTab4 = (ImageView) findViewById(R.id.message);
gisTab5 = (ImageView) findViewById(R.id.me);
tab_home.setOnClickListener(this);
tab_gk.setOnClickListener(this);
tab_ky.setOnClickListener(this);
tab_message.setOnClickListener(this);
tab_me.setOnClickListener(this);
textTab1 = (TextView) findViewById(R.id.text_home);
textTab2 = (TextView) findViewById(R.id.text_gk);
textTab3 = (TextView) findViewById(R.id.text_ky);
textTab4 = (TextView) findViewById(R.id.text_message);
textTab5 = (TextView) findViewById(R.id.text_me);
if(index==0) {
gisTab1.setImageDrawable(getResources().getDrawable(R.mipmap.ic_home));
textTab1.setTextColor(android.graphics.Color.RED);
}
else if(index==1){
gisTab2.setImageDrawable(getResources().getDrawable(R.mipmap.ic_gk));
textTab2.setTextColor(android.graphics.Color.RED);

}else if(index==2){
gisTab3.setImageDrawable(getResources().getDrawable(R.mipmap.ic_ky));
textTab3.setTextColor(android.graphics.Color.RED);

}else if(index==3){
gisTab4.setImageDrawable(getResources().getDrawable(R.mipmap.ic_message));
textTab4.setTextColor(android.graphics.Color.RED);
}else{
gisTab5.setImageDrawable(getResources().getDrawable(R.mipmap.ic_me));
textTab5.setTextColor(android.graphics.Color.RED);
}

//获取四个tabview 并装入数组
//inflater = LayoutInflater.from(this);
//View view1 = inflater.inflate(R.layout.main_tab_home, null);
//View view2 = inflater.inflate(R.layout.main_tab_gk, null);
//View view3 = inflater.inflate(R.layout.main_tab_research, null);
//View view4 = inflater.inflate(R.layout.main_tab_message, null);
//View view5 = inflater.inflate(R.layout.main_tab_me, null);

ArrayList<Fragment> fragments=new ArrayList<Fragment>();
fragments.add(new HomeFragment());
fragments.add(new GkFragment());
fragments.add(new KyFragment());
fragments.add(new MessageFragment());
fragments.add(new MeFragment());
tabPager.setAdapter(new FragmentAdapter(getSupportFragmentManager(),fragments));
tabPager.setCurrentItem(index);
//tabPager.setAdapter(adapter);
}

public void addListener() {

tabPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {

public void onPageSelected(int i) {
switch (i) {
case 0:
gisTab1.setImageDrawable(getResources().getDrawable(R.mipmap.ic_home));
textTab1.setTextColor(android.graphics.Color.RED);
gisTab2.setImageDrawable(getResources().getDrawable(R.mipmap.ic_gk_normal));
textTab2.setTextColor(Color.BLACK);
gisTab3.setImageDrawable(getResources().getDrawable(R.mipmap.ic_ky_normal));
textTab3.setTextColor(Color.BLACK);
gisTab4.setImageDrawable(getResources().getDrawable(R.mipmap.ic_message_normal));
textTab4.setTextColor(Color.BLACK);
gisTab5.setImageDrawable(getResources().getDrawable(R.mipmap.ic_me_normal));
textTab5.setTextColor(Color.BLACK);

break;
case 1:
gisTab2.setImageDrawable(getResources().getDrawable(R.mipmap.ic_gk));
textTab2.setTextColor(android.graphics.Color.RED);
gisTab1.setImageDrawable(getResources().getDrawable(R.mipmap.ic_home_normal));
textTab1.setTextColor(Color.BLACK);
gisTab3.setImageDrawable(getResources().getDrawable(R.mipmap.ic_ky_normal));
textTab3.setTextColor(Color.BLACK);
gisTab4.setImageDrawable(getResources().getDrawable(R.mipmap.ic_message_normal));
textTab4.setTextColor(Color.BLACK);
gisTab5.setImageDrawable(getResources().getDrawable(R.mipmap.ic_me_normal));
textTab5.setTextColor(Color.BLACK);
break;
case 2:
gisTab3.setImageDrawable(getResources().getDrawable(R.mipmap.ic_ky));
textTab3.setTextColor(android.graphics.Color.RED);
gisTab2.setImageDrawable(getResources().getDrawable(R.mipmap.ic_gk_normal));
textTab2.setTextColor(Color.BLACK);
gisTab1.setImageDrawable(getResources().getDrawable(R.mipmap.ic_home_normal));
textTab1.setTextColor(Color.BLACK);
gisTab4.setImageDrawable(getResources().getDrawable(R.mipmap.ic_message_normal));
textTab4.setTextColor(Color.BLACK);
gisTab5.setImageDrawable(getResources().getDrawable(R.mipmap.ic_me_normal));
textTab5.setTextColor(Color.BLACK);
break;
case 3:
gisTab4.setImageDrawable(getResources().getDrawable(R.mipmap.ic_message));
textTab4.setTextColor(android.graphics.Color.RED);
gisTab2.setImageDrawable(getResources().getDrawable(R.mipmap.ic_gk_normal));
textTab2.setTextColor(Color.BLACK);
gisTab1.setImageDrawable(getResources().getDrawable(R.mipmap.ic_home_normal));
textTab1.setTextColor(Color.BLACK);
gisTab3.setImageDrawable(getResources().getDrawable(R.mipmap.ic_ky_normal));
textTab3.setTextColor(Color.BLACK);
gisTab5.setImageDrawable(getResources().getDrawable(R.mipmap.ic_me_normal));
textTab5.setTextColor(Color.BLACK);
break;
case 4:
gisTab5.setImageDrawable(getResources().getDrawable(R.mipmap.ic_me));
textTab5.setTextColor(android.graphics.Color.RED);
gisTab2.setImageDrawable(getResources().getDrawable(R.mipmap.ic_gk_normal));
textTab2.setTextColor(Color.BLACK);
gisTab1.setImageDrawable(getResources().getDrawable(R.mipmap.ic_home_normal));
textTab1.setTextColor(Color.BLACK);
gisTab3.setImageDrawable(getResources().getDrawable(R.mipmap.ic_ky_normal));
textTab3.setTextColor(Color.BLACK);
gisTab4.setImageDrawable(getResources().getDrawable(R.mipmap.ic_message_normal));
textTab4.setTextColor(Color.BLACK);
break;

}
}

public void onPageScrolled(int i, float v, int i1) {

}

public void onPageScrollStateChanged(int i) {

}

});}

public void onClick(View v) {
switch (v.getId()) {
case R.id.tab_home:
tabPager.setCurrentItem(TAB_HOME);
break;
case R.id.tab_gk:
tabPager.setCurrentItem(TAB_GK);
break;
case R.id.tab_ky:
tabPager.setCurrentItem(TAB_KY);
break;
case R.id.tab_message:
tabPager.setCurrentItem(TAB_Message);
break;
case R.id.tab_me:
tabPager.setCurrentItem(TAB_Me);
break;

default:
break;
}
}

}

相关界面：