Question

我想在Android Studio中为Android应用程序中的特定页面使用Master / Detail流程模板。我的应用程序非常复杂，所以我做了一个虚拟应用程序来澄清我的初始目标。

当用户通过滑动动作导航到FragmentC时，我希望Android Studio提供的主/明细流模板出现。最好的方法是什么？具体来说，我不确定如何从viewpager中的片段加载模板。我故意模糊，因为我不想限制可能的解决方案。提前谢谢。

我的虚拟申请：

MainActivity.java

   package com.felhr.scrolltabs;

import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.support.annotation.NonNull;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.widget.TextView;

import java.util.Timer;
import java.util.TimerTask;


public class MainActivity extends FragmentActivity {

    boolean fragmentAVisible = false;
    Timer timer;
    TimerTask timerTask;
    final Handler handler = new Handler();

    ViewPager viewPager = null;
    TextView count = null;

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

        if (savedInstanceState == null)
        {
        }
        else
        {
        }

        setContentView(R.layout.activity_main);
        viewPager = (ViewPager)findViewById(R.id.pager);
        FragmentManager fragmentManager = getSupportFragmentManager();
        viewPager.setAdapter(new MyAdapter(fragmentManager));

    }

    @Override
    protected void onResume() {
        super.onResume();
    }


    // test lifecycles
    @Override
    public void onStart() {
        super.onStart();
    }

    @Override
    public void onPause() {
        super.onPause();
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
    }

    @Override
    public void onStop() {
        super.onStop();
    }
}

class MyAdapter extends FragmentStatePagerAdapter
{
    public MyAdapter(FragmentManager fm)
    {
        super(fm);
    }

    @Override
    public Fragment getItem(int i) {
        Fragment fragment = null;
        Log.d("MAIN","get Item is called "+ i);
        if (i==0)
        {
            fragment=new FragmentA();
        }
        if (i==1)
        {
            fragment=new FragmentB();
        }
        if (i==2)
        {
            fragment=new FragmentC();
        }
        return fragment;
    }

    @Override
    public int getCount() {
//        Log.d("SWIPE","get count is called");
        return 3;
    }

    // talks to title to give the page
    @Override
    public CharSequence getPageTitle(int position) {
        if (position == 0) {
            return "Tab 1";
        }
        if (position == 1) {
            return "Tab 2";
        }
        if (position == 2) {
            return "Tab 3";
        }
        return null;
    }
}

FragmentA.java

package com.felhr.scrolltabs;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

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

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (savedInstanceState == null)
        {
        }
        else
        {
        }
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
    }

    @Override
    public void onStart() {
        super.onStart();
    }

    @Override
    public void onResume() {
        super.onResume();
    }

    @Override
    public void onPause() {
        super.onPause();
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
    }

    @Override
    public void onStop() {
        super.onStop();
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
    }

    @Override
    public void onDetach() {
        super.onDetach();
    }
}

FragmentB.java

package com.felhr.scrolltabs;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

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

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (savedInstanceState == null)
        {
        }
        else
        {
        }
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
    }

    @Override
    public void onStart() {
        super.onStart();
    }

    @Override
    public void onResume() {
        super.onResume();
    }

    @Override
    public void onPause() {
        super.onPause();
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
    }

    @Override
    public void onStop() {
        super.onStop();
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
    }

    @Override
    public void onDetach() {
        super.onDetach();
    }
}

FragmentC.java

package com.felhr.scrolltabs;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

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

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (savedInstanceState == null)
        {
        }
        else
        {
        }
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
    }

    @Override
    public void onStart() {
        super.onStart();
    }

    @Override
    public void onResume() {
        super.onResume();
    }

    @Override
    public void onPause() {
        super.onPause();
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
    }

    @Override
    public void onStop() {
        super.onStop();
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
    }

    @Override
    public void onDetach() {
        super.onDetach();
    }
}

activity_main.xml中

<android.support.v4.view.ViewPager
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/pager">
    <android.support.v4.view.PagerTitleStrip
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/title"
        android:background="#33B5E5">

        </android.support.v4.view.PagerTitleStrip>
</android.support.v4.view.ViewPager>

fragment_a.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#C3f3f3">

    <TextView
        android:id="@+id/textViewTimer"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="Fragment A"
        android:textColor="#000000"
        android:gravity="center"/>

</RelativeLayout>

fragment_b.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#FF5040">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="Fragment B"
        android:textColor="#000000"
        android:gravity="center"/>

</RelativeLayout>

fragment_c.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#CCFFB1">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="Fragment C"
        android:textColor="#000000"
        android:gravity="center"/>

</RelativeLayout>

在ViewPager中使用Android Master / Detail流程模板

0 个答案: