1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/*
* Copyright (C) 2008 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.android.keyguard;
import android.content.Context;
import android.content.Intent;
import android.os.PowerManager;
import android.os.SystemClock;
import android.os.UserHandle;
import android.telephony.TelephonyManager;
import android.util.AttributeSet;
import android.view.View;
import android.widget.Button;
import com.android.internal.telephony.IccCardConstants.State;
import com.android.internal.widget.LockPatternUtils;
/**
* This class implements a smart emergency button that updates itself based
* on telephony state. When the phone is idle, it is an emergency call button.
* When there's a call in progress, it presents an appropriate message and
* allows the user to return to the call.
*/
public class EmergencyButton extends Button {
private static final int EMERGENCY_CALL_TIMEOUT = 10000; // screen timeout after starting e.d.
private static final String ACTION_EMERGENCY_DIAL = "com.android.phone.EmergencyDialer.DIAL";
KeyguardUpdateMonitorCallback mInfoCallback = new KeyguardUpdateMonitorCallback() {
@Override
public void onSimStateChanged(State simState) {
int phoneState = KeyguardUpdateMonitor.getInstance(mContext).getPhoneState();
updateEmergencyCallButton(simState, phoneState);
}
void onPhoneStateChanged(int phoneState) {
State simState = KeyguardUpdateMonitor.getInstance(mContext).getSimState();
updateEmergencyCallButton(simState, phoneState);
};
};
private LockPatternUtils mLockPatternUtils;
private PowerManager mPowerManager;
public EmergencyButton(Context context) {
this(context, null);
}
public EmergencyButton(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
KeyguardUpdateMonitor.getInstance(mContext).registerCallback(mInfoCallback);
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
KeyguardUpdateMonitor.getInstance(mContext).removeCallback(mInfoCallback);
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
mLockPatternUtils = new LockPatternUtils(mContext);
mPowerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
setOnClickListener(new OnClickListener() {
public void onClick(View v) {
takeEmergencyCallAction();
}
});
int phoneState = KeyguardUpdateMonitor.getInstance(mContext).getPhoneState();
State simState = KeyguardUpdateMonitor.getInstance(mContext).getSimState();
updateEmergencyCallButton(simState, phoneState);
}
/**
* Shows the emergency dialer or returns the user to the existing call.
*/
public void takeEmergencyCallAction() {
// TODO: implement a shorter timeout once new PowerManager API is ready.
// should be the equivalent to the old userActivity(EMERGENCY_CALL_TIMEOUT)
mPowerManager.userActivity(SystemClock.uptimeMillis(), true);
if (TelephonyManager.getDefault().getCallState()
== TelephonyManager.CALL_STATE_OFFHOOK) {
mLockPatternUtils.resumeCall();
} else {
final boolean bypassHandler = true;
KeyguardUpdateMonitor.getInstance(mContext).reportEmergencyCallAction(bypassHandler);
Intent intent = new Intent(ACTION_EMERGENCY_DIAL);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
getContext().startActivityAsUser(intent,
new UserHandle(mLockPatternUtils.getCurrentUser()));
}
}
private void updateEmergencyCallButton(State simState, int phoneState) {
boolean enabled = false;
if (phoneState == TelephonyManager.CALL_STATE_OFFHOOK) {
enabled = true; // always show "return to call" if phone is off-hook
} else if (mLockPatternUtils.isEmergencyCallCapable()) {
boolean simLocked = KeyguardUpdateMonitor.getInstance(mContext).isSimLocked();
if (simLocked) {
// Some countries can't handle emergency calls while SIM is locked.
enabled = mLockPatternUtils.isEmergencyCallEnabledWhileSimLocked();
} else {
// True if we need to show a secure screen (pin/pattern/SIM pin/SIM puk);
// hides emergency button on "Slide" screen if device is not secure.
enabled = mLockPatternUtils.isSecure();
}
}
mLockPatternUtils.updateEmergencyCallButtonState(this, phoneState, enabled, false);
}
}
|
