Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
DialogFragmentでシンプルで汎用的なダイアログ
package sakura.example.myexamdialogfragment;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
public class CommonDialogFragment extends DialogFragment {
private DialogListener listener = null;
public static CommonDialogFragment newInstance(String title, String message) {
CommonDialogFragment frag = new CommonDialogFragment();
Bundle bundle = new Bundle();
bundle.putString("title", title);
bundle.putString("message", message);
frag.setArguments(bundle);
return frag;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
String title = getArguments().getString("title");
String message = getArguments().getString("message");
return new AlertDialog.Builder(getActivity())
.setIcon(R.drawable.ic_launcher)
.setTitle(title)
.setMessage(message)
.setPositiveButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int whichButton) {
listener.onPositiveClick();
}
}
)
.setNegativeButton(android.R.string.cancel,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int whichButton) {
listener.onNegativeClick();
}
}
)
.create();
}
/**
* リスナーを追加する
*
* @param listener
*/
public void setDialogListener(DialogListener listener) {
this.listener = listener;
}
/**
* リスナーを削除する
*/
public void removeDialogListener() {
this.listener = null;
}
}
package sakura.example.myexamdialogfragment;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.Toast;
public class Fragment01 extends Fragment implements OnClickListener, DialogListener {
// DialogListenerを実装しておく
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if (container == null) {
return null;
}
return inflater.inflate(R.layout.fragment01, container, false);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Button button = (Button) getView().findViewById(R.id.button1);
button.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button1:
// バックスタックに以前のFragmentがあれば取り除く
FragmentTransaction ft = getFragmentManager().beginTransaction();
Fragment prev = getFragmentManager().findFragmentByTag("CommonDialogFragment");
if (prev != null) {
ft.remove(prev);
}
ft.addToBackStack(null);
// Create and show the dialog.
CommonDialogFragment newFragment = CommonDialogFragment.newInstance(
"title", "this is message");
newFragment.setDialogListener(this);
newFragment.show(ft, "CommonDialogFragment");
if (newFragment.isVisible()) {
newFragment.dismiss();
}
break;
default:
break;
}
}
@Override
public void onPositiveClick() {
Toast.makeText(getActivity(), "ok ボタンが押された", Toast.LENGTH_SHORT).show();
}
@Override
public void onNegativeClick() {
Toast.makeText(getActivity(), "cancel ボタンが押された", Toast.LENGTH_SHORT).show();
}
}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/root"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="ダイアログを表示する" />
</RelativeLayout>
package sakura.example.myexamdialogfragment;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;
public class MainActivity extends FragmentActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Fragment01 frag = new Fragment01();
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.add(R.id.main, frag, "Fragment01");
ft.commit();
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment