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AdapterTransition / src / com.example.android.adaptertransition /

MainActivity.java

       
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        /*
       
       
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        * Copyright 2013 The Android Open Source Project
       
       
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        *
       
       
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        * Licensed under the Apache License, Version 2.0 (the "License");
       
       
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        * you may not use this file except in compliance with the License.
       
       
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        * You may obtain a copy of the License at
       
       
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        *
       
       
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        *     http://www.apache.org/licenses/LICENSE-2.0
       
       
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        *
       
       
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        * Unless required by applicable law or agreed to in writing, software
       
       
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        * distributed under the License is distributed on an "AS IS" BASIS,
       
       
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        * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
       
       
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        * See the License for the specific language governing permissions and
       
       
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        * limitations under the License.
       
       
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        */
       
       
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        package com.example.android.adaptertransition;
       
       
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        import android.os.Bundle;
       
       
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        import android.support.v4.app.FragmentTransaction;
       
       
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        import android.view.Menu;
       
       
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        import android.view.MenuItem;
       
       
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        import android.widget.ViewAnimator;
       
       
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        import com.example.android.common.activities.SampleActivityBase;
       
       
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        import com.example.android.common.logger.Log;
       
       
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        import com.example.android.common.logger.LogFragment;
       
       
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        import com.example.android.common.logger.LogWrapper;
       
       
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        import com.example.android.common.logger.MessageOnlyLogFilter;
       
       
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        /**
       
       
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        * A simple launcher activity containing a summary sample description, sample log and a custom
       
       
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        * {@link android.support.v4.app.Fragment} which can display a view.
       
       
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        * <p>
       
       
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        * For devices with displays with a width of 720dp or greater, the sample log is always visible,
       
       
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        * on other devices it's visibility is controlled by an item on the Action Bar.
       
       
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        */
       
       
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        public class MainActivity extends SampleActivityBase {
       
       
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        public static final String TAG = "MainActivity";
       
       
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        // Whether the Log Fragment is currently shown
       
       
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        private boolean mLogShown;
       
       
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        @Override
       
       
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        protected void onCreate(Bundle savedInstanceState) {
       
       
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        super.onCreate(savedInstanceState);
       
       
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        setContentView(R.layout.activity_main);
       
       
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        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
       
       
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        AdapterTransitionFragment fragment = new AdapterTransitionFragment();
       
       
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        transaction.replace(R.id.sample_content_fragment, fragment);
       
       
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        transaction.commit();
       
       
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        }
       
       
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        @Override
       
       
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        public boolean onCreateOptionsMenu(Menu menu) {
       
       
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        getMenuInflater().inflate(R.menu.main, menu);
       
       
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        return true;
       
       
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        }
       
       
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        @Override
       
       
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        public boolean onPrepareOptionsMenu(Menu menu) {
       
       
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        MenuItem logToggle = menu.findItem(R.id.menu_toggle_log);
       
       
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        logToggle.setVisible(findViewById(R.id.sample_output) instanceof ViewAnimator);
       
       
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        logToggle.setTitle(mLogShown ? R.string.sample_hide_log : R.string.sample_show_log);
       
       
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        return super.onPrepareOptionsMenu(menu);
       
       
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        }
       
       
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        @Override
       
       
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        public boolean onOptionsItemSelected(MenuItem item) {
       
       
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        switch(item.getItemId()) {
       
       
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        case R.id.menu_toggle_log:
       
       
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        mLogShown = !mLogShown;
       
       
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        ViewAnimator output = (ViewAnimator) findViewById(R.id.sample_output);
       
       
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        if (mLogShown) {
       
       
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        output.setDisplayedChild(1);
       
       
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        } else {
       
       
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        output.setDisplayedChild(0);
       
       
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        }
       
       
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        supportInvalidateOptionsMenu();
       
       
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        return true;
       
       
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        }
       
       
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        return super.onOptionsItemSelected(item);
       
       
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        }
       
       
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        /** Create a chain of targets that will receive log data */
       
       
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        @Override
       
       
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        public void initializeLogging() {
       
       
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        // Wraps Android's native log framework.
       
       
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        LogWrapper logWrapper = new LogWrapper();
       
       
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        // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
       
       
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        Log.setLogNode(logWrapper);
       
       
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        // Filter strips out everything except the message text.
       
       
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        MessageOnlyLogFilter msgFilter = new MessageOnlyLogFilter();
       
       
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        logWrapper.setNext(msgFilter);
       
       
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        // On screen logging via a fragment with a TextView.
       
       
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        LogFragment logFragment = (LogFragment) getSupportFragmentManager()
       
       
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        .findFragmentById(R.id.log_fragment);
       
       
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        msgFilter.setNext(logFragment.getLogView());
       
       
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        Log.i(TAG, "Ready");
       
       
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        }
       
       
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        }