prebuilts/androidtv/leanback/app/src/main/java/com/example/android/tvleanback/ui/BrowseErrorActivity.java

/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package com.example.android.tvleanback.ui;

import android.app.Activity;
import android.app.Fragment;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.ProgressBar;

import com.example.android.tvleanback.R;

/*
 * BrowseErrorActivity shows how to use ErrorFragment
 */
public class BrowseErrorActivity extends Activity {
    private static int TIMER_DELAY = 3000;
    private static int SPINNER_WIDTH = 100;
    private static int SPINNER_HEIGHT = 100;

    private ErrorFragment mErrorFragment;
    private SpinnerFragment mSpinnerFragment;

    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        testError();
    }

    private void testError() {
        mErrorFragment = new ErrorFragment();
        getFragmentManager().beginTransaction().add(R.id.main_frame, mErrorFragment).commit();

        mSpinnerFragment = new SpinnerFragment();
        getFragmentManager().beginTransaction().add(R.id.main_frame, mSpinnerFragment).commit();

        final Handler handler = new Handler();
        handler.postDelayed(new Runnable() {
            @Override
            public void run() {
                getFragmentManager().beginTransaction().remove(mSpinnerFragment).commit();
                mErrorFragment.setErrorContent();
            }
        }, TIMER_DELAY);
    }

    @Override
    public boolean onSearchRequested() {
        startActivity(new Intent(this, SearchActivity.class));
        return true;
    }

    static public class SpinnerFragment extends Fragment {
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            ProgressBar progressBar = new ProgressBar(container.getContext());
            if (container instanceof FrameLayout) {
                FrameLayout.LayoutParams layoutParams =
                        new FrameLayout.LayoutParams(SPINNER_WIDTH, SPINNER_HEIGHT, Gravity.CENTER);
                progressBar.setLayoutParams(layoutParams);
            }
            return progressBar;
        }
    }
}