Links
Android Sites
Language
Results
Loading...
1
/*
2
* Copyright 2013 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
19
20
package com.example.android.adaptertransition;
21
22
import android.os.Bundle;
23
import android.support.v4.app.FragmentTransaction;
24
import android.view.Menu;
25
import android.view.MenuItem;
26
import android.widget.ViewAnimator;
27
28
import com.example.android.common.activities.SampleActivityBase;
29
import com.example.android.common.logger.Log;
30
import com.example.android.common.logger.LogFragment;
31
import com.example.android.common.logger.LogWrapper;
32
import com.example.android.common.logger.MessageOnlyLogFilter;
33
34
/**
35
* A simple launcher activity containing a summary sample description, sample log and a custom
36
* {@link android.support.v4.app.Fragment} which can display a view.
37
* <p>
38
* For devices with displays with a width of 720dp or greater, the sample log is always visible,
39
* on other devices it's visibility is controlled by an item on the Action Bar.
40
*/
41
public class MainActivity extends SampleActivityBase {
42
43
public static final String TAG = "MainActivity";
44
45
// Whether the Log Fragment is currently shown
46
private boolean mLogShown;
47
48
@Override
49
protected void onCreate(Bundle savedInstanceState) {
50
super.onCreate(savedInstanceState);
51
setContentView(R.layout.activity_main);
52
53
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
54
AdapterTransitionFragment fragment = new AdapterTransitionFragment();
55
transaction.replace(R.id.sample_content_fragment, fragment);
56
transaction.commit();
57
}
58
59
@Override
60
public boolean onCreateOptionsMenu(Menu menu) {
61
getMenuInflater().inflate(R.menu.main, menu);
62
return true;
63
}
64
65
@Override
66
public boolean onPrepareOptionsMenu(Menu menu) {
67
MenuItem logToggle = menu.findItem(R.id.menu_toggle_log);
68
logToggle.setVisible(findViewById(R.id.sample_output) instanceof ViewAnimator);
69
logToggle.setTitle(mLogShown ? R.string.sample_hide_log : R.string.sample_show_log);
70
71
return super.onPrepareOptionsMenu(menu);
72
}
73
74
@Override
75
public boolean onOptionsItemSelected(MenuItem item) {
76
switch(item.getItemId()) {
77
case R.id.menu_toggle_log:
78
mLogShown = !mLogShown;
79
ViewAnimator output = (ViewAnimator) findViewById(R.id.sample_output);
80
if (mLogShown) {
81
output.setDisplayedChild(1);
82
} else {
83
output.setDisplayedChild(0);
84
}
85
supportInvalidateOptionsMenu();
86
return true;
87
}
88
return super.onOptionsItemSelected(item);
89
}
90
91
/** Create a chain of targets that will receive log data */
92
@Override
93
public void initializeLogging() {
94
// Wraps Android's native log framework.
95
LogWrapper logWrapper = new LogWrapper();
96
// Using Log, front-end to the logging chain, emulates android.util.log method signatures.
97
Log.setLogNode(logWrapper);
98
99
// Filter strips out everything except the message text.
100
MessageOnlyLogFilter msgFilter = new MessageOnlyLogFilter();
101
logWrapper.setNext(msgFilter);
102
103
// On screen logging via a fragment with a TextView.
104
LogFragment logFragment = (LogFragment) getSupportFragmentManager()
105
.findFragmentById(R.id.log_fragment);
106
msgFilter.setNext(logFragment.getLogView());
107
108
Log.i(TAG, "Ready");
109
}
110
}