Android Open Source - androidkeystore Simple Text Fragment

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2013 The Android Open Source Project
 */*w w w . j ava2 s.  com*/
 * 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.keystore.common;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

/**
 * Simple fragment containing only a TextView. Used by TextPagerAdapter to
 * create tutorial-style pages for apps.
 */
public class SimpleTextFragment extends Fragment {

  // Contains the text that will be displayed by this Fragment
  String mText;

  // Contains a resource ID for the text that will be displayed by this
  // fragment.
  int mTextId = -1;

  // Keys which will be used to store/retrieve text passed in via
  // setArguments.
  public static final String TEXT_KEY = "text";
  public static final String TEXT_ID_KEY = "text_id";

  // For situations where the app wants to modify text at Runtime, exposing
  // the TextView.
  private TextView mTextView;

  public SimpleTextFragment() {
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState) {
    // Before initializing the textView, check if any arguments were
    // provided via setArguments.
    processArguments();

    // Create a new TextView and set its text to whatever was provided.
    mTextView = new TextView(getActivity());

    if (mText != null) {
      mTextView.setText(mText);
      Log.i("SimpleTextFragment", mText);
    }
    return mTextView;
  }

  public TextView getTextView() {
    return mTextView;
  }

  /**
   * Changes the text for this TextView, according to the resource ID
   * provided.
   * 
   * @param stringId
   *            A resource ID representing the text content for this
   *            Fragment's TextView.
   */
  public void setText(int stringId) {
    getTextView().setText(getActivity().getString(stringId));
  }

  /**
   * Processes the arguments passed into this Fragment via setArguments
   * method. Currently the method only looks for text or a textID, nothing
   * else.
   */
  public void processArguments() {
    // For most objects we'd handle the multiple possibilities for
    // initialization variables
    // as multiple constructors. For Fragments, however, it's customary to
    // use
    // setArguments / getArguments.
    if (getArguments() != null) {
      Bundle args = getArguments();
      if (args.containsKey(TEXT_KEY)) {
        mText = args.getString(TEXT_KEY);
        Log.d("Constructor", "Added Text.");
      } else if (args.containsKey(TEXT_ID_KEY)) {
        mTextId = args.getInt(TEXT_ID_KEY);
        mText = getString(mTextId);
      }
    }
  }
}

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