android開発 シンプルなダイアログ表示

2019 Jun. 30.
2019 Jun. 29.
2019 Jun. 22.
2019 May 31.
2019 May 30.

参照元
https://developer.android.com/guide/topics/ui/dialogs
https://akira-watson.com/android/alertdialog.html
http://furudate.hatenablog.com/entry/2014/01/09/162421

[MainActivity]

package YOUR.PACKAGE.alertdialogsample;

import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.support.annotation.NonNull;
import android.support.v4.app.DialogFragment;
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.TextView;


public class MainActivity extends AppCompatActivity {

    Button button_dialog1, button_dialog2, button_dialog3;
    private TextView text_view;
    private FragmentManager flagmentManager;

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

        text_view = findViewById(R.id.text_view);
        button_dialog1 = findViewById(R.id.button_dialog1);
        button_dialog2 = findViewById(R.id.button_dialog2);
        button_dialog3 = findViewById(R.id.button_dialog3);


        // button_dialog1ボタンタップでAlertを表示させる
        button_dialog1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                flagmentManager = getSupportFragmentManager();

                // DialogFragment を継承したAlertDialogFragment1のインスタンス
                AlertDialogFragment1 dialogFragment = AlertDialogFragment1.newInstance(100);
                // DialogFragmentの表示
                dialogFragment.show(flagmentManager, "test alert dialog1");
            }
        });


        // button_dialog2ボタンタップでダイアログのメッセージを変えたAlertを表示させる
        //   newInstance()への引数を変更してメッセージを変える
        button_dialog2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                flagmentManager = getSupportFragmentManager();

                // DialogFragmentを継承したAlertDialogFragment2のインスタンス
                AlertDialogFragment1 dialogFragment = AlertDialogFragment1.newInstance(200);
                // DialogFragmentの表示
                dialogFragment.show(flagmentManager, "test alert dialog2");
            }
        });


        // button_dialog3ボタンタップでItemを選択するAlertを表示させる
        button_dialog3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                flagmentManager = getSupportFragmentManager();

                // DialogFragment を継承したAlertDialogFragmentのインスタンス
                AlertDialogFragment2 dialogFragment = new AlertDialogFragment2();
                // DialogFragmentの表示
                dialogFragment.show(flagmentManager, "test alert dialog");
            }
        });
    }


    public void setTextView(String message){
        text_view.setText(message);
    }


    /*
     * DialogFragmentを継承したクラスAlertDialogFragment1
     */
    public static class AlertDialogFragment1 extends DialogFragment {

        /*
         * コンストラクタを記述してはならない。
         * newInstance()でのsetArguments、onCreateDialog()でのgetArgumentsを利用する。
         */
        public static AlertDialogFragment1 newInstance( int requestCode) {
            AlertDialogFragment1 fragment = new AlertDialogFragment1();

            Bundle arguments = new Bundle();
            arguments.putInt("reqCode", requestCode);
            fragment.setArguments(arguments);

            return fragment;
        }

        @Override
        @NonNull
        public Dialog onCreateDialog(Bundle savedInstanceState) {

            int requestCode = getArguments().getInt("reqCode");

            AlertDialog.Builder alert = new AlertDialog.Builder(getActivity());

            switch (requestCode) {
                case 100:
                    alert.setTitle("Test AlertDialog1");
                    alert.setMessage("Message is 100");
                    break;

                case 200:
                    alert.setTitle("Test AlertDialog2");
                    alert.setMessage("Message is 200");
                    break;

            }
            alert.setPositiveButton(R.string.dialog_ok, null);

            return alert.create();
        }
    }


    /*
     * DialogFragmentを継承したクラスAlertDialogFragment2
     */
    public static class AlertDialogFragment2 extends DialogFragment {
        // 選択肢のリスト
        private String[] menulist = {"選択(1)","選択(2)","選択(3)"};

        @Override
        @NonNull
        public Dialog onCreateDialog(Bundle savedInstanceState) {

            AlertDialog.Builder alert = new AlertDialog.Builder(getActivity());

            alert.setTitle("Test AlertDialog3");
            alert.setItems(menulist, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int idx) {
                    // 選択１
                    if (idx == 0) {
                        setMassage(menulist[0]);
                    }
                    // 選択２
                    else if (idx == 1) {
                        setMassage(menulist[1]);
                    }
                    // 選択３, idx == 2
                    else{
                        setMassage(menulist[2]);
                    }
                }
            });
            return alert.create();
        }


        private void setMassage(String message) {
            MainActivity mainActivity = (MainActivity) getActivity();
            if (mainActivity != null) {
                mainActivity.setTextView(message);
            }
        }
    }
}

ユーザーからの文字列入力を受け取るダイアログ android開発

2019 May 19.

https://www.ipentec.com/document/android-custom-dialog-using-dialogfragment-return-value より

[activity_main.xml]

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textViewPhrase"
        android:layout_width="0dp"
        android:layout_height="66dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.118" />

</android.support.constraint.ConstraintLayout>

[input_text_dialog.xml]

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/textViewPhraseLabel"
        android:layout_width="132dp"
        android:layout_height="27dp"
        android:text="Input text"
        app:layout_constraintBottom_toTopOf="@+id/editTextPhrase"
        tools:layout_editor_absoluteX="8dp" />

    <EditText
        android:id="@+id/editTextPhrase"
        android:layout_width="381dp"
        android:layout_height="52dp"
        android:layout_marginTop="268dp"
        android:ems="10"
        android:inputType="text"
        app:layout_constraintTop_toTopOf="parent"
        tools:layout_editor_absoluteX="8dp" />

    <Button
        android:id="@+id/buttonOK"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="52dp"
        android:layout_marginEnd="8dp"
        android:text="OK"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/editTextPhrase" />
</android.support.constraint.ConstraintLayout>



MainActivity.java

package YOUR.PACKAGE;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    boolean is1stRun = true;

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

        if ( is1stRun ) {
            // get text by dialog
            InputTextDialogFragment cdf = new InputTextDialogFragment();
            cdf.show(getSupportFragmentManager(),"dialog");
            is1stRun = false;
        }
    }


    public void onReturnValue(String value) {
        TextView textViewPhrase = (TextView)findViewById(R.id.textViewPhrase);
        textViewPhrase.setText(value);
    }

}

InputTextDialogFragment.java

package YOUR.PACKAGE;

import android.app.Dialog;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.EditText;

public class InputTextDialogFragment extends DialogFragment {
    EditText editTextPhrase;

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        Dialog dialog = new Dialog(getActivity());
        dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        dialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN);
        dialog.setContentView(R.layout.input_text_dialog);

        editTextPhrase = (dialog.findViewById(R.id.editTextPhrase));

        dialog.findViewById(R.id.buttonOK).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                String textPhrase = editTextPhrase.getText().toString();
                MainActivity callingActivity = (MainActivity) getActivity();
                callingActivity.onReturnValue(textPhrase);

                dismiss();
            }
        });

        return dialog;
    }
}