DialogFragment sample

dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="abeshi" />

</LinearLayout>

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <Button
        android:id="@+id/success"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="showDialog(success)" />

    <Button
        android:id="@+id/error"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="showDialog(error)" />

</LinearLayout>

MainActivity.java

package test.fragment;

import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;

public class MainActivity extends Activity {

    private static final String TAG = "dialog";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        // 成功パターン
        findViewById(R.id.success).setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                SuccessCaseDialogFragment.newInstance().show(getFragmentManager(), TAG);
            }
        });

        // 失敗パターン
        findViewById(R.id.error).setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                ErrorCaseDialogFragment.newInstance().show(getFragmentManager(), TAG);
            }
        });
    }

    private static class ErrorCaseDialogFragment extends DialogFragment {
        public static DialogFragment newInstance() {
            return new ErrorCaseDialogFragment();
        }
    }
}

SuccessCaseDialogFragment.java

package test.fragment;

import android.app.DialogFragment;

public class SuccessCaseDialogFragment extends DialogFragment {
    public static DialogFragment newInstance() {
        return new SuccessCaseDialogFragment();
    }
}

TestDialogFragment.java

package test.fragment;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class TestDialogFragment extends DialogFragment {

    public static DialogFragment newInstace() {
        DialogFragment dialogFragment = new TestDialogFragment();
        return dialogFragment;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setTitle("TestDialogFragment");
        builder.setView(getContentView());
        Dialog dialog = builder.create();
        return dialog;
    }

    private View getContentView() {
        LayoutInflater inflater = getActivity().getLayoutInflater();
        return inflater.inflate(R.layout.dialog, null);
    }
}

DialogFragmentのサンプル。Activity再生成(画面の回転等)してもDialog表示しっぱなし。

// コネタ
Fragmentはprivateなクラスとして定義しない。
(例えば private static TestDialogFragment extends DialogFragment ..)
Activity再生成時の自動再生成対象な場合、以下の例外発生する。

Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment XxxFragment:
make sure class name exists, is public, and has an empty constructor that is public

自動生成処理時に外部から呼び出せるようにしといて(publicコンストラクタ用意しとけ)、ということかな？

Is it possible to make an embeddable DialogFragment?