androidで簡易ダイアログ - m_shige1979のときどきITブログ

処理の確認画面などで確認する場合などに使用する

終了前に確認したり、登録処理での確認などに使用する

参考

[Android] DialogFragmentを使ってダイアログを表示する - Qiita

実装

画面

f:id:m_shige1979:20150124043141p:plain

Activity

package jp.mshige1979.app.sampleappdialog1;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.DialogInterface;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity {

    private Button btn1;

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

        btn1 = (Button)findViewById(R.id.btn1);
        btn1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // ダイアログを表示する
                DialogFragment newFragment = new TestDialogFragment();
                newFragment.show(getFragmentManager(), "test");
            }
        });
    }

    public static class TestDialogFragment extends DialogFragment {
        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
            // Use the Builder class for convenient dialog construction

            AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
            builder.setMessage("ダイアログ")
                    .setPositiveButton("はい", new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int id) {
                            // FIRE ZE MISSILES!
                            Toast toast = Toast.makeText(getActivity(), "はい", Toast.LENGTH_SHORT);
                            toast.show();
                        }
                    })
                    .setNegativeButton("キャンセル", new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int id) {
                            // User cancelled the dialog
                            Toast toast = Toast.makeText(getActivity(), "いいえ", Toast.LENGTH_SHORT);
                            toast.show();

                        }
                    });
            // Create the AlertDialog object and return it
            return builder.create();
        }
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}