Android Open Source - NavigationDrawer Log Fragment

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License

The source code is released under:
Apache License
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Java Source Code

/*
* Copyright 2013 The Android Open Source Project
*/*from   w w w .j  a  v  a 2  s.c o  m*/
* 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.
*/
/*
 * Copyright 2013 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.common.logger;

import android.graphics.Typeface;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ScrollView;

/**
 * Simple fraggment which contains a LogView and uses is to output log data it receives
 * through the LogNode interface.
 */
public class LogFragment extends Fragment {

  private LogView mLogView;
  private ScrollView mScrollView;

  public LogFragment() {
  }

  public View inflateViews() {
    mScrollView = new ScrollView(getActivity());
    ViewGroup.LayoutParams scrollParams = new ViewGroup.LayoutParams(
        ViewGroup.LayoutParams.MATCH_PARENT,
        ViewGroup.LayoutParams.MATCH_PARENT);
    mScrollView.setLayoutParams(scrollParams);

    mLogView = new LogView(getActivity());
    ViewGroup.LayoutParams logParams = new ViewGroup.LayoutParams(scrollParams);
    logParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
    mLogView.setLayoutParams(logParams);
    mLogView.setClickable(true);
    mLogView.setFocusable(true);
    mLogView.setTypeface(Typeface.MONOSPACE);

    // Want to set padding as 16 dips, setPadding takes pixels.  Hooray math!
    int paddingDips = 16;
    double scale = getResources().getDisplayMetrics().density;
    int paddingPixels = (int) ((paddingDips * (scale)) + .5);
    mLogView.setPadding(paddingPixels, paddingPixels, paddingPixels, paddingPixels);
    mLogView.setCompoundDrawablePadding(paddingPixels);

    mLogView.setGravity(Gravity.BOTTOM);
    mLogView.setTextAppearance(getActivity(), android.R.style.TextAppearance_Holo_Medium);

    mScrollView.addView(mLogView);
    return mScrollView;
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
                           Bundle savedInstanceState) {

    View result = inflateViews();

    mLogView.addTextChangedListener(new TextWatcher() {
      @Override
      public void beforeTextChanged(CharSequence s, int start, int count, int after) {
      }

      @Override
      public void onTextChanged(CharSequence s, int start, int before, int count) {
      }

      @Override
      public void afterTextChanged(Editable s) {
        mScrollView.fullScroll(ScrollView.FOCUS_DOWN);
      }
    });
    return result;
  }

  public LogView getLogView() {
    return mLogView;
  }
}
Java Source Code List
