为什么在Android中更改actionbar上的选项卡时，我的Edittext的文本会被重置？

我正在开发一个在操作栏中使用4个选项卡的应用程序。该应用程序将通过蓝牙向设备发送消息。我在这里选择了代码中更重要的部分

因此，第三个选项卡使用三个seekbar来配置将要发送的消息。第一个seekbar控制消息的行数。第二，seekbar控制展览时间，最后一个控制发送多少信息

在第四个选项卡中，根据选项卡3中选择的消息编号显示五个按钮。选择每个按钮后，将根据选项卡3中选择的行数显示每条消息的相应行。 显示的每一行都是编辑文本

当我在选项卡4中写入edtitext时，然后切换到选项卡3，之后，返回到选项卡4。文本在我写的时候就在那里，但是当我切换到tabr 2或tab 1，然后返回到tab 4时，消息2、3、4和5的文本消失了。需要强调的是，信息1的文本保持不变

我相信这是因为我在oncreateview中用一个新的EditText实例化Linhas[I][j]，但我不确定。当我尝试在OnCreate中实例化它时，在我切换到选项卡4之后，应用程序被异常关闭

public class Trafeg extends FragmentActivity 
implements ActionBar.TabListener{

    static BluetoothAdapter Adaptador = BluetoothAdapter.getDefaultAdapter(); //Configura um adaptador
    static BluetoothDevice Bt_Device=null;
    static BluetoothSocket btssocket = null;

    SectionsPagerAdapter mSectionsPagerAdapter;
    public static Context context;
    public static Context c;    
    public static EditText cx_txt_tx;

    public static Button bt_alterar;
    public static Button bt_enviar;

    public static RadioButton Automatico;
    public static RadioButton Economico;
    public static RadioButton Maximo;

    public static Button btnBT;
    public static EditText etBT;

    public static ProgressBar progresso;


    public static TextView TV_Linhas;
    public static TextView TV_Colunas;
    public static TextView TV_Orient;

    public byte[] buf= new byte[1];

    public static boolean dado_1=true;
    public static boolean flag_inicio=false;
    public static boolean flag_fim=false;
    public static boolean sucess=false;
    public static boolean flag_orient=true;
    public static boolean flag_conect=false;
    public static boolean flag_dev1=true;
    public static boolean repeat=false;
    public static boolean conect_sucess=false;

    public static OutputStream outStream = null;
    public static InputStream inStream = null;

    public static String RX_str="!";
    public static String ns=null;
    public static String serial_number=null;
    public static String devAddress=null;
    public static String Orient="H";
    public static String linhas_str="1";
    public static String colunas_str="1";
    public static String brilho="E";
    public static String estado= "Conectar";
    public static String nome;
    public static String teste_str=null;


    static private final String tag = "BTS";
    private static final UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); //UUID default HC-05
    private static int N_Colunas=1;
    private static int N_Linhas=1;


    private static int qtLinhas = 4;    // Quantidade de objetos EditText criados
    private static int linhasEn = 1;    // Quantidade de linhas habilitadas
    private static int periodo = 1;     // Período entre quadros
    private static int qtQuadros = 5;   // Quantidade total de quadros
    public static int quadrosEn = 1;    // Quantidade de quadros habilitados
    private static int quadro = 0;      // Quadro habilitado

    private static EditText[][] Linhas = new EditText[qtQuadros+1][qtLinhas+1];
    private static LinearLayout llLinhas[] = new LinearLayout[qtQuadros];
    private static TextView tvQuadro;
    public static Button btQuadro[] = new Button[5];

    public static View rootView_configtext;
    public static View rootView_edittext;


    ViewPager mViewPager;


    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        //Toast.makeText(this, "OnCreate", 0).show();


        //Vincula as variáveis ao layout.       
        setContentView(R.layout.main_activity);
        // inicializa action bar
        final ActionBar actionBar = getActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        actionBar.setHomeButtonEnabled(true);
        actionBar.setDisplayShowHomeEnabled(false);
        actionBar.setDisplayUseLogoEnabled(true);
        actionBar.setDisplayShowTitleEnabled(false);
        c=this;

        /*for(int i=1;i<qtQuadros;i++)
        {
            for(int j=0;j<qtLinhas;j++)
            {
                Linhas[i][j] = new EditText(c);
            }
        }*/


        // Fixa orientação em retrato
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

        // Instancia o adaptador que irá retornar um fragmento para cada uma das 4
        // páginas do aplicativo
        mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

        // Inicializa a ViewPager
        mViewPager = (ViewPager) findViewById(R.id.pager);
        mViewPager.setAdapter(mSectionsPagerAdapter);

        //Listener que verifica quando houve mudança de página
        mViewPager
                .setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
                    @Override
                    public void onPageSelected(int position)
                    {
                        //posiciona a action bar na Tab que foi selecionada
                        actionBar.setSelectedNavigationItem(position);
                    }
                });

        // Para cada uma das seções do aplicativo, adiciona uma tab na action bar
        for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++)
        {
            // Cria uma tab com o título correspondente ao  titulo da pagina definido pelo adaptador
            actionBar.addTab(actionBar.newTab()
                    .setText(mSectionsPagerAdapter.getPageTitle(i))
                    .setTabListener(this));
        }  
        //Verifica se o bluetooth está desativado
        if(!Adaptador.isEnabled()) 
        {
            Intent enableBluetooth = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); 
            startActivityForResult(enableBluetooth, 0); //Chama função que Pergunta ao usuário se ele quer
                                                        //ativar o bluetooth de seu telefone
        }
        mViewPager.setCurrentItem(1); //Posiciona a aplicação na Tab Main
    }
    public class SectionsPagerAdapter extends FragmentPagerAdapter 
    {

        public SectionsPagerAdapter(FragmentManager fm) 
        {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) 
        {
            //Esse método é chamado para instanciar fragment com a página correspondente a position

            Fragment fragment = new Fragment();
            switch (position) {  
            case 0:  
                fragment = new configFragment(); 
                break;
            case 1:  
                fragment = new mainfragment(); 
                break;
            case 2:
                fragment = new configtext(); 
                break;
            case 3:
                fragment = new editfragment(); 
                break;
            default:  
                break;  
            } 

            Bundle args = new Bundle();
            args.putInt(configFragment.ARG_SECTION_NUMBER, position + 1);
            fragment.setArguments(args);


            //retorna fragment
            return fragment;
        }

        @Override
        public int getCount() {
            // Quantidade de telas
            return 4;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            //Retorna o título de cada tab
            switch (position) {
            case 0:
                return "Config.\nControl.";
            case 1:
                return "Main";
            case 2:
                return "Config.\n    Txt.";
            case 3:
                return "Edit.\nTxt";
            }
            return null;
        }
    }
    //Tab1
    public static class configFragment extends Fragment implements OnSeekBarChangeListener {
        /**
         * Cria a página de configuração da controladora
         */
        public static final String ARG_SECTION_NUMBER = "section_number";
        //private RadioGroup radioLinhas;
        private View rootView;

        public configFragment() 
        {
        }
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            rootView = inflater.inflate(R.layout.config_controladora_fragment, container, false);


            bt_alterar = (Button)rootView.findViewById(R.id.alterar); 
            bt_enviar = (Button)rootView.findViewById(R.id.enviar);

            Automatico=(RadioButton)rootView.findViewById(R.id.Auto);
            Economico=(RadioButton)rootView.findViewById(R.id.Econ);
            Maximo=(RadioButton)rootView.findViewById(R.id.Max);

            SeekBar sbColunas = (SeekBar) rootView.findViewById(R.id.sb_Colunas);
            SeekBar sbLinhas = (SeekBar) rootView.findViewById(R.id.sb_Linhas);

            TV_Colunas= (TextView) rootView.findViewById(R.id.Ed_colunas);
            TV_Linhas= (TextView) rootView.findViewById(R.id.Ed_linhas);
            TV_Orient= (TextView) rootView.findViewById(R.id.Ed_Orient);


            //Limita o progresso máximo das barras em 4 e inicializa-os em 1.
            sbLinhas.setMax(4);
            sbLinhas.setProgress(1);

            sbColunas.setMax(4);
            sbColunas.setProgress(1);

            if(Orient.equals("H"))TV_Orient.setText("Orientação: Hori.  ");
            else if(Orient.equals("V")) TV_Orient.setText("Orientação: Vert.  ");

            TV_Linhas.setText("Nº de Linhas:   "+linhas_str);
            TV_Colunas.setText("Nº de Colunas: "+colunas_str);

            return rootView;
        }
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress,
                boolean fromUser) {
            // TODO Auto-generated method stub

        }
        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            // TODO Auto-generated method stub

        }
        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            // TODO Auto-generated method stub

        }
    }

    //Tab 2 
    public static class mainfragment extends Fragment {
        /**
         * Cria a página do main
         */
        public static final String ARG_SECTION_NUMBER = "section_number";

        public mainfragment() 
        {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            rootView_edittext = inflater.inflate(R.layout.main_fragment, container, false);

            progresso = (ProgressBar) rootView_edittext.findViewById(R.id.progressBar1);
            progresso.setVisibility(View.INVISIBLE);

            etBT = (EditText) rootView_edittext.findViewById(R.id.bluetooth_et);
            btnBT = (Button) rootView_edittext.findViewById(R.id.bt_button);
            btnBT.setText(estado);
                btnBT.setOnClickListener(new OnClickListener()//ViewViewView
            {

                @Override
                public void onClick(View v)
                {
                    conect_sucess=false;
                    repeat=false;
                }
            });
            return rootView_edittext;
        }
    }

    //Tab3  
    public static class configtext extends Fragment implements OnSeekBarChangeListener {
        /**
         * Cria a página de configuração de texto
         */
        public static final String ARG_SECTION_NUMBER = "section_number";
        //private RadioGroup radioLinhas;
        private TextView tvQuadros, tvLinhas, tvPeriodo;

        public configtext() 
        {
        }

        @Override
        //Listener das seekbar
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) 
        {
            //se for a seekbar correspondente ao período
            if(seekBar.getId() == R.id.sb_periodo)
            {
                //força o progresso em 1, no caso do progresso ser menor que 1
                if(progress < 1) seekBar.setProgress(1);
                //se o progresso não for menor que 1, o período recebe o progresso
                else periodo = progress;
                tvPeriodo.setText(Integer.toString(seekBar.getProgress()) + " s");
                //Escreve o período selecionado no layout
            }

            //se for a seekbar correspondente ao número de quadros
            else if(seekBar.getId() == R.id.sb_quadros)
            {
                //força o progresso em 1, no caso do progresso ser menor que 1
                if(progress < 1) 
                {
                    seekBar.setProgress(1);
                    progress=1;
                }
                //se o progresso não for menor que 1, o múmero de quadros recebe o progresso
                quadrosEn = progress;
                //Escreve o número de quadros selecionado no layout
                tvQuadros.setText(Integer.toString(seekBar.getProgress()));
                if(btQuadro[0] != null)
                {
                    //Verifica se o número de quadros não é nulo
                    for(int i=0; i<qtQuadros; i++)
                    {
                        //Log.d("Quadro (557)", Integer.toString(i));
                        //Torna visível a quantidade de quadros selecionados
                        if(i < quadrosEn) btQuadro[i].setVisibility(View.VISIBLE);
                        else btQuadro[i].setVisibility(View.INVISIBLE);
                    }
                }
            }
            //se for a seekbar correspondente ao número de linhas
            else if(seekBar.getId() == R.id.sb_linhas)
            {
                //força o progresso em 1, no caso do progresso ser menor que 1
                if(progress < 1) seekBar.setProgress(1);
                //se o progresso não for menor que 1, o múmero de linhas recebe o progresso
                else linhasEn = progress;
                //Escreve o número de linhas selecionado no layout
                tvLinhas.setText(Integer.toString(seekBar.getProgress()));
                //Chama a função que desenha as linhas
                if(Linhas[0][0] != null) desenhaLinhas();
            }
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar)
        {


        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar)
        {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            rootView_configtext = inflater.inflate(R.layout.config_text_fragmente, container, false);

            tvPeriodo = (TextView) rootView_configtext.findViewById(R.id.TextView02);
            tvQuadros = (TextView) rootView_configtext.findViewById(R.id.TextView03);
            tvLinhas = (TextView) rootView_configtext.findViewById(R.id.TextView05);

            SeekBar sbPeriodo = (SeekBar) rootView_configtext.findViewById(R.id.sb_periodo);
            SeekBar sbQuadros = (SeekBar) rootView_configtext.findViewById(R.id.sb_quadros);
            SeekBar sbLinhas = (SeekBar) rootView_configtext.findViewById(R.id.sb_linhas);
            //Víncula variáveis a elementos do layout


            sbPeriodo.setOnSeekBarChangeListener(this);
            sbQuadros.setOnSeekBarChangeListener(this);
            sbLinhas.setOnSeekBarChangeListener(this);
            //Listener das seekbar

            //Seta progresso default e progresso máximo para cada seekbar
            sbPeriodo.setMax(5);
            sbPeriodo.setProgress(periodo);

            sbLinhas.setMax(4);
            sbLinhas.setProgress(linhasEn);

            sbQuadros.setMax(5);
            sbQuadros.setProgress(quadrosEn);           

            return rootView_configtext;
            //retorna a página criada
        }
    }

        //tab4  
    public static class editfragment extends Fragment {
        /**
         * Cria apágina de edição de texto 
         */
        public static final String ARG_SECTION_NUMBER = "section_number";
        private View rootView;

        public editfragment() 
        {
        }

        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            rootView = inflater.inflate(R.layout.edit_fragment, container, false);

            //Víncula Variáveis a elementos do Layout
            Linhas[0][0] = (EditText) rootView.findViewById(R.id.Linha01);
            Linhas[0][1] = (EditText) rootView.findViewById(R.id.Linha02);
            Linhas[0][2] = (EditText) rootView.findViewById(R.id.Linha03);
            Linhas[0][3] = (EditText) rootView.findViewById(R.id.Linha04); 

            llLinhas[0] = (LinearLayout) rootView.findViewById(R.id.linearLayout1);
            llLinhas[1] = (LinearLayout) rootView.findViewById(R.id.LinearLayout01);
            llLinhas[2] = (LinearLayout) rootView.findViewById(R.id.LinearLayout02);
            llLinhas[3] = (LinearLayout) rootView.findViewById(R.id.LinearLayout03);
            llLinhas[4] = (LinearLayout) rootView.findViewById(R.id.LinearLayout04);

            //inicializa um novo context
            Context context = rootView.getContext();

            tvQuadro = (TextView) rootView.findViewById(R.id.textView06);
            tvQuadro.setText("Quadro " + Integer.toString(quadro+1));
            //llLinhas[quadro].setVisibility(View.VISIBLE);
            //Log.e("aaa",Integer.toString(quadro));

            LayoutParams lpLinhas[] = new LayoutParams[4];

            for(int i=0; i<qtLinhas; i++)
                lpLinhas[i] = new LayoutParams(Linhas[0][i].getLayoutParams());

            for(int i=0; i<qtLinhas; i++)
            {
                Linhas[0][i].setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_NORMAL);
                Linhas[0][i].setImeOptions(EditorInfo.IME_ACTION_NEXT);
            }

            for(int i=1; i<qtQuadros; i++)
            {   
                //Log.d("qtQuadros", Integer.toString(qtQuadros));
                for(int j=0; j<qtLinhas; j++)
                {
                    Linhas[i][j] = new EditText(c);
                    Linhas[i][j].setLayoutParams(lpLinhas[j]);
                    Linhas[i][j].setHint(Linhas[0][j].getHint());
                    Linhas[i][j].setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_NORMAL);
                    Linhas[i][j].setImeOptions(EditorInfo.IME_ACTION_NEXT);
                    //Linhas[i][j].setText(teste_str);
                    llLinhas[i].addView(Linhas[i][j]);
                }
                llLinhas[i].setLayoutParams(llLinhas[0].getLayoutParams());
                llLinhas[i].setVisibility(View.INVISIBLE);
            }   
            Button ButtonSend = (Button) rootView.findViewById(R.id.button_send);
            Button ButtonClean = (Button) rootView.findViewById(R.id.button_clean);

            btQuadro[0] = (Button) rootView.findViewById(R.id.bt_button);
            btQuadro[1] = (Button) rootView.findViewById(R.id.button2);
            btQuadro[2] = (Button) rootView.findViewById(R.id.button3);
            btQuadro[3] = (Button) rootView.findViewById(R.id.button4);
            btQuadro[4] = (Button) rootView.findViewById(R.id.button5); 

            btQuadro[quadro].setBackgroundColor(Color.argb(100, 36, 173, 89));

            for(int i=1; i<qtQuadros; i++)
            {
                    if(i<quadrosEn) btQuadro[i].setVisibility(View.VISIBLE);
                    else btQuadro[i].setVisibility(View.GONE);
            }
            desenhaLinhas();
            llLinhas[quadro].setVisibility(View.VISIBLE);

            OnClickListener ocl = new OnClickListener()
            {
                @Override
                public void onClick(View v)
                {               
                    v.setBackgroundColor(Color.argb(100, 36, 173, 89));

                    llLinhas[quadro].setVisibility(View.INVISIBLE);

                    for(int i=0; i<qtQuadros; i++)
                    {
                        if(v.getId() == btQuadro[i].getId()) quadro = i;
                        else btQuadro[i].setBackgroundColor(Color.TRANSPARENT);
                        //Log.d("(763)","quadro=i");
                    }

                    tvQuadro.setText("Quadro " + Integer.toString(quadro+1));
                    desenhaLinhas();
                    llLinhas[quadro].setVisibility(View.VISIBLE);
                }
            };

            for(int i=0; i<qtQuadros; i++)  btQuadro[i].setOnClickListener(ocl);

            ButtonClean.setOnClickListener(new OnClickListener()
            {
                public void onClick(View v) 
                {      
                    for(int i=0; i<qtQuadros; i++) 
                    {
                        for(int j=0; j<qtLinhas; j++)
                        {
                            Linhas[i][j].setText("");
                        }
                    }
                }
            });

            ButtonSend.setOnClickListener(new OnClickListener()
            {
                public void onClick(View v) 
                {      
                    String buffer = "{";

                    for(int i=0; i<quadrosEn; i++)
                    {
                        for(int j=0; j<linhasEn; j++)
                        {
                            if(j != 0) buffer += "\n";
                            if(Linhas[i][j].getText().length() != 0)
                            {
                                buffer += Linhas[i][j].getText().toString();
                            }
                        }

                        buffer += "\t";
                        buffer += Integer.toString(periodo);
                    }
                    buffer += "}";
                }
            });
            return rootView;
        }   
    }

        @Override
    public void onTabSelected(Tab tab, FragmentTransaction ft) {
        mViewPager.setCurrentItem(tab.getPosition());
        // TODO Auto-generated method stub

    }

    @Override
    public void onTabUnselected(Tab tab, FragmentTransaction ft) {
        /*for(int i=1;i<qtQuadros;i++)
        {
            for(int j=0;j<qtLinhas;j++)
            {
                teste_str=Linhas[i][j].getText().toString();
                //else teste_str= (Linhas[i][j].getText().toString())+"aaaa";
                //teste_str="testando";
            }
        }*/

    }

    @Override
    public void onTabReselected(Tab tab, FragmentTransaction ft) {
        // TODO Auto-generated method stub

    }

    public static void desenhaLinhas()
    {
        for(int i=0; i<qtLinhas; i++)
        {
            if(i < linhasEn) Linhas[quadro][i].setVisibility(View.VISIBLE);
            else Linhas[quadro][i].setVisibility(View.INVISIBLE);
            //Log.d("linhasEn",Integer.toString(linhasEn));
        }
    }
}

public class Trafeg扩展了碎片活动
实现ActionBar.TabListener{
静态BluetoothAdapter Adapter=BluetoothAdapter.getDefaultAdapter（）；//配置um Adapter
静态蓝牙设备Bt_设备=空；
静态BluetoothSocket btssocket=null；
分段SPAGERADAPTER mSectionsPagerAdapter；
公共静态语境；
公共静态语境c；
公共静态编辑文本cx\U txt\U tx；
公共静态按钮bt_alterar；
公共静态按钮bt_enviar；
公共静电按钮自动装置；
公共静态收音机按钮Economico；
公共静态无线电按钮Maximo；
公共静态按钮btnBT；
公共静态编辑文本etBT；
公共静态ProgressBar progresso；
公共静态文本视图电视；
公共静态文本视图电视；
公共静态文本视图电视；
公共字节[]buf=新字节[1]；
公共静态布尔dado_1=true；
公共静态布尔标志_inicio=false；
公共静态布尔标志_fim=false；
公共静态布尔suces=false；
公共静态布尔标志_orient=true；
公共静态布尔标志_conect=false；
公共静态布尔标志_dev1=true；
公共静态布尔重复=false；
公共静态布尔conect_success=false；
公共静态OutputStream扩展流=null；
公共静态InputStream inStream=null；
公共静态字符串RX_str=“！”；
公共静态字符串ns=null；
公共静态字符串序列号=空；
公共静态字符串devAddress=null；
公共静态字符串Orient=“H”；
公共静态字符串linhas_str=“1”；
公共静态字符串colunas_str=“1”；
公共静态字符串brilho=“E”；
公共静态字符串estado=“Conectar”；
公共静态字符串nome；
公共静态字符串teste_str=null；
静态私有最终字符串tag=“BTS”；
私有静态最终UUID MY_UUID=UUID.fromString（“00001101-0000-1000-8000-00805F9B34FB”）；//UUID默认值HC-05
私有静态int N_Colunas=1；
私有静态int N_Linhas=1；
私有静态int qtLinhas=4；//Quantidade de objetos EditText-criados
私有静态int-linhasEn=1；//Quantidade-linhas-has-habilitadas
私有静态int periodo=1；//Período entre quadros
私有静态int qtQuadros=5；//量化总计
公共静态int quadrosEn=1；//quadros能力量化
私有静态int-quadro=0；//quadro-habilitado
私有静态EditText[][]Linhas=新EditText[qtQuadros+1][qtLinhas+1]；
专用静态线性布局llLinhas[]=新线性布局[qtQuadros]；
私有静态文本视图tvQuadro；
公共静态按钮btQuadro[]=新按钮[5]；
公共静态视图rootView\u configtext；
公共静态视图rootView_edittext；
ViewPager mViewPager；
@凌驾
创建时受保护的void（Bundle savedInstanceState）
{
super.onCreate（savedInstanceState）；
//Toast.makeText（这个“OnCreate”，0.show（）；
//Vincula作为variáveis ao布局。
setContentView（R.layout.main_活动）；
//inicializa动作条
最终ActionBar ActionBar=getActionBar（）；
actionBar.setNavigationMode（actionBar.NAVIGATION\u MODE\u选项卡）；
actionBar.setHomeButtonEnabled（真）；
actionBar.setDisplayShowHomeEnabled（false）；
actionBar.setDisplayUseLogoEnabled（true）；
actionBar.setDisplayShowTitleEnabled（false）；
c=这个；
/*为了（int i=1；iViewPager实例化最多3个视图或片段。回收容器以放置新视图/片段是非常必要的。例如，当您位于第2页时，仅实例化第1和第3个视图/片段。解决方法是在适配器上保留片段的实例，或用于增加最大ViewPager视图/片段实例化

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:android1="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android1:gravity="center"
tools:context=".G4Bluetooth" >

<Button
    android:id="@+id/button_send"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignRight="@+id/linearLayout1"
    android:layout_marginBottom="10dp"
    android:text="Enviar" />

<Button
    android:id="@+id/button_clean"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBaseline="@+id/button_send"
    android:layout_alignBottom="@+id/button_send"
    android:layout_alignLeft="@+id/linearLayout1"
    android:text="Limpar" />

<LinearLayout
    android1:id="@+id/linearLayout2"
    android1:layout_width="wrap_content"
    android1:layout_height="wrap_content"
    android1:layout_above="@+id/button_send"
    android1:layout_alignLeft="@+id/button_clean"
    android1:layout_alignRight="@+id/button_send"
    android1:layout_marginBottom="10dp"
    android1:orientation="horizontal" >

    <Button
        android1:id="@+id/bt_button"
        style="?android:attr/buttonStyleSmall"
        android1:layout_width="wrap_content"
        android1:layout_height="match_parent"
        android1:background="@android:color/transparent"
        android1:text="1" />

    <Button
        android1:id="@+id/button2"
        style="?android:attr/buttonStyleSmall"
        android1:layout_width="wrap_content"
        android1:layout_height="match_parent"
        android1:background="@android:color/transparent"
        android1:text="2" />

    <Button
        android1:id="@+id/button3"
        style="?android:attr/buttonStyleSmall"
        android1:layout_width="wrap_content"
        android1:layout_height="match_parent"
        android1:background="@android:color/transparent"
        android1:text="3" />

    <Button
        android1:id="@+id/button4"
        style="?android:attr/buttonStyleSmall"
        android1:layout_width="wrap_content"
        android1:layout_height="match_parent"
        android1:background="@android:color/transparent"
        android1:text="4" />

    <Button
        android1:id="@+id/button5"
        style="?android:attr/buttonStyleSmall"
        android1:layout_width="wrap_content"
        android1:layout_height="match_parent"
        android1:background="@android:color/transparent"
        android1:text="5" />
</LinearLayout>

<LinearLayout
    android1:id="@+id/linearLayout1"
    android1:layout_width="wrap_content"
    android1:layout_height="wrap_content"
    android1:layout_alignParentLeft="true"
    android1:layout_alignParentRight="true"
    android1:layout_alignParentTop="true"
    android1:layout_margin="10dp"
    android1:layout_marginLeft="10dp"
    android1:layout_marginTop="10dp"
    android1:orientation="vertical" >

    <EditText
        android1:id="@+id/Linha01"
        android1:layout_width="fill_parent"
        android1:layout_height="wrap_content"
        android1:ems="10"
        android1:hint="Linha 1"
        android1:maxLength="64"
        android1:minLines="1"
        android1:visibility="invisible" />

    <EditText
        android1:id="@+id/Linha02"
        android1:layout_width="fill_parent"
        android1:layout_height="wrap_content"
        android1:hint="Linha 2"
        android1:maxLength="64"
        android1:minLines="1"
        android1:visibility="invisible" />

    <EditText
        android1:id="@+id/Linha03"
        android1:layout_width="fill_parent"
        android1:layout_height="wrap_content"
        android1:hint="Linha 3"
        android1:maxLength="64"
        android1:minLines="1"
        android1:visibility="invisible" />

    <EditText
        android1:id="@+id/Linha04"
        android1:layout_width="fill_parent"
        android1:layout_height="wrap_content"
        android1:hint="Linha 4"
        android1:maxLength="64"
        android1:minLines="1"
        android1:visibility="invisible" />
</LinearLayout>

<LinearLayout
    android1:id="@+id/LinearLayout01"
    android1:layout_width="wrap_content"
    android1:layout_height="wrap_content"
    android1:layout_alignParentTop="true"
    android1:layout_centerHorizontal="true"
    android1:orientation="vertical" >
</LinearLayout>

<LinearLayout
    android1:id="@+id/LinearLayout02"
    android1:layout_width="wrap_content"
    android1:layout_height="wrap_content"
    android1:layout_alignParentTop="true"
    android1:layout_centerHorizontal="true"
    android1:orientation="vertical" >
</LinearLayout>

<LinearLayout
    android1:id="@+id/LinearLayout03"
    android1:layout_width="wrap_content"
    android1:layout_height="wrap_content"
    android1:layout_alignParentTop="true"
    android1:layout_centerHorizontal="true"
    android1:orientation="vertical" >
</LinearLayout>

<LinearLayout
    android1:id="@+id/LinearLayout04"
    android1:layout_width="wrap_content"
    android1:layout_height="wrap_content"
    android1:layout_alignParentTop="true"
    android1:layout_centerHorizontal="true"
    android1:orientation="vertical" >
</LinearLayout>

<TextView
    android1:id="@+id/textView06"
    android1:layout_width="wrap_content"
    android1:layout_height="wrap_content"
    android1:layout_alignBaseline="@+id/button_clean"
    android1:layout_alignBottom="@+id/button_clean"
    android1:layout_centerHorizontal="true"
    android1:text="Quadro 1" />

</RelativeLayout>