blob: b7d09cda2a34e9f9e12d9fabb1d745efae55e1b6 (
plain)
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
|
package com.mapbox.mapboxsdk.utils;
import android.os.AsyncTask;
import java.io.File;
import java.lang.ref.WeakReference;
public class FileUtils {
/**
* Task checking whether app's process can read a file.
*/
public static class CheckFileReadPermissionTask extends AsyncTask<File, Void, Boolean> {
private final WeakReference<OnCheckFileReadPermissionListener> listenerWeakReference;
public CheckFileReadPermissionTask(OnCheckFileReadPermissionListener listener) {
this.listenerWeakReference = new WeakReference<>(listener);
}
@Override
protected Boolean doInBackground(File... files) {
try {
return files[0].canRead();
} catch (Exception ex) {
return false;
}
}
@Override
protected void onCancelled() {
OnCheckFileReadPermissionListener listener = listenerWeakReference.get();
if (listener != null) {
listener.onError();
}
}
@Override
protected void onPostExecute(Boolean result) {
OnCheckFileReadPermissionListener listener = listenerWeakReference.get();
if (listener != null) {
if (result) {
listener.onReadPermissionGranted();
} else {
listener.onError();
}
}
}
}
/**
* Interface definition for a callback invoked when checking file's read permissions.
*/
public interface OnCheckFileReadPermissionListener {
/**
* Invoked when app's process has a permission to read a file.
*/
void onReadPermissionGranted();
/**
* Invoked when app's process doesn't have a permission to read a file or an error occurs.
*/
void onError();
}
/**
* Task checking whether app's process can write to a file.
*/
public static class CheckFileWritePermissionTask extends AsyncTask<File, Void, Boolean> {
private final WeakReference<OnCheckFileWritePermissionListener> listenerWeakReference;
public CheckFileWritePermissionTask(OnCheckFileWritePermissionListener listener) {
this.listenerWeakReference = new WeakReference<>(listener);
}
@Override
protected Boolean doInBackground(File... files) {
try {
return files[0].canWrite();
} catch (Exception ex) {
return false;
}
}
@Override
protected void onCancelled() {
OnCheckFileWritePermissionListener listener = listenerWeakReference.get();
if (listener != null) {
listener.onError();
}
}
@Override
protected void onPostExecute(Boolean result) {
OnCheckFileWritePermissionListener listener = listenerWeakReference.get();
if (listener != null) {
if (result) {
listener.onWritePermissionGranted();
} else {
listener.onError();
}
}
}
}
/**
* Interface definition for a callback invoked when checking file's write permissions.
*/
public interface OnCheckFileWritePermissionListener {
/**
* Invoked when app's process has a permission to write to a file.
*/
void onWritePermissionGranted();
/**
* Invoked when app's process doesn't have a permission to write to a file or an error occurs.
*/
void onError();
}
}
|
