security/keystore/BasicAndroidKeyStore/BasicAndroidKeyStore/src/main/java/com/example/android/basicandroidkeystore/LogFragment.java

/*
 * 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.basicandroidkeystore;

import com.example.android.common.logger.LogView;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.text.Editable;
import android.text.TextWatcher;
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;

    public LogFragment() {}

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

        View result = inflater.inflate(R.layout.log_fragment, container, false);

        mLogView = (LogView) result.findViewById(R.id.sample_output);

        // Wire up so when the text changes, the view scrolls down.
        final ScrollView scrollView =
                ((ScrollView) result.findViewById(R.id.log_scroll));

        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) {
                scrollView.fullScroll(ScrollView.FOCUS_DOWN);
            }

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

        return result;
    }

    public LogView getLogView() {
        return mLogView;
    }
}