การสร้าง Single Choice Dialog Fragment

SingleChoiceDialog.java

package com.phaisarn.myapplication;

import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v7.app.AlertDialog;

public class SingleChoiceDialog extends DialogFragment {
    private int mSelectedIndex = -1;

    public SingleChoiceDialog() {
    }

    public static SingleChoiceDialog newInstance(String title, String[] items) {
        SingleChoiceDialog dialog = new SingleChoiceDialog();
        Bundle args = new Bundle();
        args.putString("title", title);
        args.putStringArray("items", items);
        dialog.setArguments(args);
        return dialog;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        String title = getArguments().getString("title");
        String[] items = getArguments().getStringArray("items");

        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getActivity())
                .setTitle(title)
                .setSingleChoiceItems(items, mSelectedIndex, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        mSelectedIndex = which;     //อัปเดตลำดับรายการที่ถูกเลือกในขณะนั้น (แต่ยังไม่ส่งกลับ)
                    }
                })
                .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        mListener.onFinishDialog(-1);   //ถ้าคลิก Cancel จะไม่มีรายการถูกเลือก
                    }
                })
                .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        mListener.onFinishDialog(mSelectedIndex);  //ถ้าคลิก OK ให้ส่งลำดับที่ถูกเลือกกลับออกไป
                    }
                });

        return alertDialogBuilder.create();
    }

    interface OnFinishDialogListener {
        void onFinishDialog(int selectedIndex);
    }

    private OnFinishDialogListener mListener;

    public void setOnFinishDialogListener(OnFinishDialogListener listener) {
        mListener = listener;
    }
}

package com.phaisarn.myapplication;

import android.app.Dialog;

import android.content.DialogInterface;

import android.os.Bundle;

import android.support.v4.app.DialogFragment;

import android.support.v7.app.AlertDialog;

public class SingleChoiceDialog extends DialogFragment {

private int mSelectedIndex = -1;

public SingleChoiceDialog() {

}

public static SingleChoiceDialog newInstance(String title, String[] items) {

SingleChoiceDialog dialog = new SingleChoiceDialog();

Bundle args = new Bundle();

args.putString("title", title);

args.putStringArray("items", items);

dialog.setArguments(args);

return dialog;

}

@Override

public Dialog onCreateDialog(Bundle savedInstanceState) {

String title = getArguments().getString("title");

String[] items = getArguments().getStringArray("items");

AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getActivity())

.setTitle(title)

.setSingleChoiceItems(items, mSelectedIndex, new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

mSelectedIndex = which; //อัปเดตลำดับรายการที่ถูกเลือกในขณะนั้น (แต่ยังไม่ส่งกลับ)

}

})

.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

mListener.onFinishDialog(-1); //ถ้าคลิก Cancel จะไม่มีรายการถูกเลือก

}

})

.setPositiveButton("OK", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

mListener.onFinishDialog(mSelectedIndex); //ถ้าคลิก OK ให้ส่งลำดับที่ถูกเลือกกลับออกไป

}

});

return alertDialogBuilder.create();

}

interface OnFinishDialogListener {

void onFinishDialog(int selectedIndex);

}

private OnFinishDialogListener mListener;

public void setOnFinishDialogListener(OnFinishDialogListener listener) {

mListener = listener;

}

ItemDialog.java

package com.phaisarn.myapplication;

import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v7.app.AlertDialog;

public class ItemDialog extends DialogFragment {

    public ItemDialog() {
    }

    public static ItemDialog newInstance(String title, String[] items) {
        ItemDialog dialog = new ItemDialog();
        Bundle args = new Bundle();
        args.putString("title", title);
        args.putStringArray("items", items);
        dialog.setArguments(args);
        return dialog;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        String title = getArguments().getString("title");
        String[] items = getArguments().getStringArray("items");

        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getActivity())
                .setTitle(title)
                .setItems(items, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        mListener.onFinishDialog(which);
                    }
                })
                .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        mListener.onFinishDialog(-1);
                    }
                });

        return alertDialogBuilder.create();
    }

    interface OnFinishDialogListener {
        void onFinishDialog(int selectedIndex);
    }

    private OnFinishDialogListener mListener;

    public void setOnFinishDialogListener(OnFinishDialogListener listener) {
        mListener = listener;
    }
}

package com.phaisarn.myapplication;

import android.app.Dialog;

import android.content.DialogInterface;

import android.os.Bundle;

import android.support.v4.app.DialogFragment;

import android.support.v7.app.AlertDialog;

public class ItemDialog extends DialogFragment {

public ItemDialog() {

}

public static ItemDialog newInstance(String title, String[] items) {

ItemDialog dialog = new ItemDialog();

Bundle args = new Bundle();

args.putString("title", title);

args.putStringArray("items", items);

dialog.setArguments(args);

return dialog;

}

@Override

public Dialog onCreateDialog(Bundle savedInstanceState) {

String title = getArguments().getString("title");

String[] items = getArguments().getStringArray("items");

AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getActivity())

.setTitle(title)

.setItems(items, new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

mListener.onFinishDialog(which);

}

})

.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

mListener.onFinishDialog(-1);

}

});

return alertDialogBuilder.create();

}

interface OnFinishDialogListener {

void onFinishDialog(int selectedIndex);

}

private OnFinishDialogListener mListener;

public void setOnFinishDialogListener(OnFinishDialogListener listener) {

mListener = listener;

}

activity_Main.xml

<?xml version="1.0" encoding="utf-8"?>
<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/button_single"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="34dp"
        android:text="Show Single Choice Dialog" />

    <Button
        android:id="@+id/button_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="27dp"
        android:text="Show Item Dialog" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>

<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/button_single"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center_horizontal"

android:layout_marginTop="34dp"

android:text="Show Single Choice Dialog" />

<Button

android:id="@+id/button_item"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center_horizontal"

android:layout_marginTop="27dp"

android:text="Show Item Dialog" />

</LinearLayout>

MainActivity.java

package com.phaisarn.myapplication;

import android.support.v4.app.FragmentManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

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


        Button buttonSingle = findViewById(R.id.button_single);
        buttonSingle.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showSingleChoiceDialog();
            }
        });

        Button buttonItem = findViewById(R.id.button_item);
        buttonItem.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showItemDialog();
            }
        });
    }

    private void showSingleChoiceDialog() {
        FragmentManager fm = getSupportFragmentManager();
        final String[] items = {"One", "Two", "Three", "สี่", "ห้า"};
        SingleChoiceDialog dialog = SingleChoiceDialog.newInstance("กรุณาเลือกรายการ", items);
        dialog.show(fm, null);
        dialog.setOnFinishDialogListener(new SingleChoiceDialog.OnFinishDialogListener() {
            @Override
            public void onFinishDialog(int selectedIndex) {
                if (selectedIndex < 0) {
                    return;
                }
                Toast.makeText(getBaseContext(), items[selectedIndex], Toast.LENGTH_SHORT).show();
            }
        });
    }

    private void showItemDialog() {
        FragmentManager fm = getSupportFragmentManager();
        final String[] items = {"One", "Two", "Three", "สี่", "ห้า"};
        ItemDialog dialog = ItemDialog.newInstance("กรุณาเลือกรายการ", items);
        dialog.show(fm, null);
        dialog.setOnFinishDialogListener(new ItemDialog.OnFinishDialogListener() {
            @Override
            public void onFinishDialog(int selectedIndex) {
                if (selectedIndex < 0) {
                    return;
                }
                Toast.makeText(getBaseContext(), items[selectedIndex], Toast.LENGTH_SHORT).show();
            }
        });
    }
}

package com.phaisarn.myapplication;

import android.support.v4.app.FragmentManager;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Button buttonSingle = findViewById(R.id.button_single);

buttonSingle.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

showSingleChoiceDialog();

}

});

Button buttonItem = findViewById(R.id.button_item);

buttonItem.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

showItemDialog();

}

});

}

private void showSingleChoiceDialog() {

FragmentManager fm = getSupportFragmentManager();

final String[] items = {"One", "Two", "Three", "สี่", "ห้า"};

SingleChoiceDialog dialog = SingleChoiceDialog.newInstance("กรุณาเลือกรายการ", items);

dialog.show(fm, null);

dialog.setOnFinishDialogListener(new SingleChoiceDialog.OnFinishDialogListener() {

@Override

public void onFinishDialog(int selectedIndex) {

if (selectedIndex < 0) {

return;

}

Toast.makeText(getBaseContext(), items[selectedIndex], Toast.LENGTH_SHORT).show();

}

});

}

private void showItemDialog() {

FragmentManager fm = getSupportFragmentManager();

final String[] items = {"One", "Two", "Three", "สี่", "ห้า"};

ItemDialog dialog = ItemDialog.newInstance("กรุณาเลือกรายการ", items);

dialog.show(fm, null);

dialog.setOnFinishDialogListener(new ItemDialog.OnFinishDialogListener() {

@Override

public void onFinishDialog(int selectedIndex) {

if (selectedIndex < 0) {

return;

}

Toast.makeText(getBaseContext(), items[selectedIndex], Toast.LENGTH_SHORT).show();

}

});

}

Phaisarn Sutheebanjard

blog.phaisarn.com

การสร้าง Single Choice Dialog Fragment