การสร้าง Multiple Choice Dialog Fragment

MultipleChoiceDialog.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 MultipleChoiceDialog extends DialogFragment {

    private boolean[] checkedStates;

    public MultipleChoiceDialog() {
    }

    public static MultipleChoiceDialog newInstance(String title, String[] items) {
        MultipleChoiceDialog dialog = new MultipleChoiceDialog();
        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");

        checkedStates = new boolean[items.length];
        for(int i = 0; i < items.length; i++) {
            checkedStates[i] = false;
        }

        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getActivity())
                .setTitle(title)
                .setMultiChoiceItems(items, checkedStates,
                        new DialogInterface.OnMultiChoiceClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                                checkedStates[which] = isChecked;
                            }
                        })
                .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                })
                .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        mListener.onFinishDialog(checkedStates);
                    }
                });

        return alertDialogBuilder.create();
    }

    interface OnFinishDialogListener {
        void onFinishDialog(boolean[] checkStates);  //ส่งค่ากลับแบบ boolean array
    }

    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 MultipleChoiceDialog extends DialogFragment {

private boolean[] checkedStates;

public MultipleChoiceDialog() {

}

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

MultipleChoiceDialog dialog = new MultipleChoiceDialog();

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");

checkedStates = new boolean[items.length];

for(int i = 0; i < items.length; i++) {

checkedStates[i] = false;

}

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

.setTitle(title)

.setMultiChoiceItems(items, checkedStates,

new DialogInterface.OnMultiChoiceClickListener() {

@Override

public void onClick(DialogInterface dialog, int which, boolean isChecked) {

checkedStates[which] = isChecked;

}

})

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

@Override

public void onClick(DialogInterface dialog, int which) {

dialog.dismiss();

}

})

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

@Override

public void onClick(DialogInterface dialog, int which) {

mListener.onFinishDialog(checkedStates);

}

});

return alertDialogBuilder.create();

}

interface OnFinishDialogListener {

void onFinishDialog(boolean[] checkStates); //ส่งค่ากลับแบบ boolean array

}

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_multiple"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="36dp"
        android:text="Show Multiple Choice Dialog"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"/>

</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_multiple"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginTop="36dp"

android:text="Show Multiple Choice Dialog"

android:layout_alignParentTop="true"

android:layout_centerHorizontal="true"/>

</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 button = findViewById(R.id.button_multiple);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showMultipleChoiceDialog();
            }
        });
    }

    private void showMultipleChoiceDialog() {
        FragmentManager fm = getSupportFragmentManager();
        final String[] items = {"One", "Two", "Three", "สี่", "ห้า"};
        MultipleChoiceDialog dialog = MultipleChoiceDialog.newInstance("กรุณาเลือกรายการ", items);
        dialog.show(fm, null);
        dialog.setOnFinishDialogListener(new MultipleChoiceDialog.OnFinishDialogListener() {
            @Override
            public void onFinishDialog(boolean[] checkStates) {
                String str = "";
                for (int i = 0; i < checkStates.length; i++) {
                    if (checkStates[i] == true) {
                        str += items[i] + "\n";
                    }
                }

                str = str.trim();
                Toast.makeText(getBaseContext(), str, 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 button = findViewById(R.id.button_multiple);

button.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

showMultipleChoiceDialog();

}

});

}

private void showMultipleChoiceDialog() {

FragmentManager fm = getSupportFragmentManager();

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

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

dialog.show(fm, null);

dialog.setOnFinishDialogListener(new MultipleChoiceDialog.OnFinishDialogListener() {

@Override

public void onFinishDialog(boolean[] checkStates) {

String str = "";

for (int i = 0; i < checkStates.length; i++) {

if (checkStates[i] == true) {

str += items[i] + "\n";

}

str = str.trim();

Toast.makeText(getBaseContext(), str, Toast.LENGTH_SHORT).show();

}

});

}

Phaisarn Sutheebanjard

blog.phaisarn.com

การสร้าง Multiple Choice Dialog Fragment