1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 18 package com.example.android.common.logger; 19 20 import android.graphics.Typeface; 21 import android.os.Bundle; 22 import android.support.v4.app.Fragment; 23 import android.text.Editable; 24 import android.text.TextWatcher; 25 import android.view.Gravity; 26 import android.view.LayoutInflater; 27 import android.view.View; 28 import android.view.ViewGroup; 29 import android.widget.ScrollView; 30 31 /** 32 * Simple fraggment which contains a LogView and uses is to output log data it receives 33 * through the LogNode interface. 34 */ 35 public class LogFragment extends Fragment { 36 37 private LogView mLogView; 38 private ScrollView mScrollView; 39 LogFragment()40 public LogFragment() { 41 } 42 inflateViews()43 public View inflateViews() { 44 mScrollView = new ScrollView(getActivity()); 45 ViewGroup.LayoutParams scrollParams = new ViewGroup.LayoutParams( 46 ViewGroup.LayoutParams.MATCH_PARENT, 47 ViewGroup.LayoutParams.MATCH_PARENT); 48 mScrollView.setLayoutParams(scrollParams); 49 50 mLogView = new LogView(getActivity()); 51 ViewGroup.LayoutParams logParams = new ViewGroup.LayoutParams(scrollParams); 52 logParams.height = ViewGroup.LayoutParams.WRAP_CONTENT; 53 mLogView.setTextAppearance(android.R.style.TextAppearance_Material_Medium); 54 mLogView.setLayoutParams(logParams); 55 mLogView.setClickable(true); 56 mLogView.setFocusable(true); 57 mLogView.setTypeface(Typeface.create("monospace", Typeface.NORMAL)); 58 59 // Want to set padding as 16 dips, setPadding takes pixels. Hooray math! 60 int paddingDips = 16; 61 double scale = getResources().getDisplayMetrics().density; 62 int paddingPixels = (int) ((paddingDips * (scale)) + .5); 63 mLogView.setPadding(paddingPixels, paddingPixels, paddingPixels, paddingPixels); 64 mLogView.setCompoundDrawablePadding(paddingPixels); 65 66 mLogView.setGravity(Gravity.BOTTOM); 67 68 mScrollView.addView(mLogView); 69 return mScrollView; 70 } 71 72 @Override onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)73 public View onCreateView(LayoutInflater inflater, ViewGroup container, 74 Bundle savedInstanceState) { 75 76 View result = inflateViews(); 77 78 mLogView.addTextChangedListener(new TextWatcher() { 79 @Override 80 public void beforeTextChanged(CharSequence s, int start, int count, int after) { 81 } 82 83 @Override 84 public void onTextChanged(CharSequence s, int start, int before, int count) { 85 } 86 87 @Override 88 public void afterTextChanged(Editable s) { 89 90 mScrollView.post(new Runnable() { 91 @Override 92 public void run() { 93 mScrollView 94 .smoothScrollTo(0, mScrollView.getBottom() + mLogView.getHeight()); 95 } 96 }); 97 } 98 }); 99 return result; 100 } 101 getLogView()102 public LogView getLogView() { 103 return mLogView; 104 } 105 }