DocumentDialogApp/ContentResolver.cpp at master · stephenquan/DocumentDialogApp · GitHub

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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
//----------------------------------------------------------------------
//
//----------------------------------------------------------------------

#include "ContentResolver.h"
#include <QAndroidJniObject>
#include <QAndroidJniEnvironment>
#include <QtAndroid>
#include "DocumentsContract.h"
#include "DocumentsContractDocument.h"
#include "JniExceptionCheck.h"

//----------------------------------------------------------------------
//
//----------------------------------------------------------------------

const char* ContentResolver::JCLASS = "android/content/ContentResolver";

//----------------------------------------------------------------------
//
//----------------------------------------------------------------------

ContentResolver::ContentResolver(QAndroidJniEnvironment& env) :
    AndroidObject(env, JCLASS, contentResolver(env))
{
}

//----------------------------------------------------------------------
//
//----------------------------------------------------------------------

ContentResolver::ContentResolver(ContentResolver& other) :
    AndroidObject(other.m_Env, JCLASS, other)
{
}

//----------------------------------------------------------------------
//
//----------------------------------------------------------------------

ContentResolver::ContentResolver(ContentResolver&& other) :
    AndroidObject(other.m_Env, JCLASS, other)
{
}

//----------------------------------------------------------------------
//
//----------------------------------------------------------------------

QStringList ContentResolver::query(const QString& uri, const QString& columnName)
{
    JniExceptionCheck check(m_Env);

    if (!isValid())
    {
        return QStringList();
    }

    QAndroidJniObject urlString = QAndroidJniObject::fromString( uri );

    QAndroidJniObject _uri = QAndroidJniObject::callStaticObjectMethod(
                "android/net/Uri",
                "parse",
                "(Ljava/lang/String;)Landroid/net/Uri;",
                urlString.object< jstring >() );
    if ( !_uri.isValid() )
    {
        return QStringList();
    }

    QAndroidJniObject _columnName = QAndroidJniObject::fromString(columnName);
    if ( !_columnName.isValid() )
    {
        return QStringList();
    }

    jobjectArray stringArray = m_Env->NewObjectArray( 1, m_Env->FindClass("java/lang/String"), nullptr);
    m_Env->SetObjectArrayElement( stringArray, 0, _columnName.object<jstring>() );

    QAndroidJniObject cursor = callObjectMethod(
            "query",
            "(Landroid/net/Uri;[Ljava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;Landroid/os/CancellationSignal;)Landroid/database/Cursor;",
            _uri.object(),
            stringArray,
            nullptr,
            nullptr,
            nullptr,
            nullptr
            );
    if ( !cursor.isValid() )
    {
        return QStringList();
    }

    QStringList list;

    jboolean ok = cursor.callMethod<jboolean>( "moveToFirst" );
    while ( ok )
    {
        QAndroidJniObject str = cursor.callObjectMethod( "getString", "(I)Ljava/lang/String;", 0 );
        list.append(str.toString());
        ok = cursor.callMethod<jboolean>( "moveToNext" );
    }

    return list;
}

//----------------------------------------------------------------------
//
//----------------------------------------------------------------------

InputStream ContentResolver::openInputStream(const QString& uri)
{
    JniExceptionCheck check(m_Env);

    if (!isValid())
    {
        return InputStream(m_Env);
    }

    QAndroidJniObject _uri = QAndroidJniObject::fromString(uri);
    if (!_uri.isValid())
    {
        return InputStream(m_Env);
    }

    QAndroidJniObject __uri = QAndroidJniObject::callStaticObjectMethod(
                "android/net/Uri",
                "parse",
                "(Ljava/lang/String;)Landroid/net/Uri;",
                _uri.object<jstring>() );
    if (!__uri.isValid())
    {
        return InputStream(m_Env);
    }

    QAndroidJniObject _inputStream = callObjectMethod(
                "openInputStream",
                "(Landroid/net/Uri;)Ljava/io/InputStream;",
                __uri.object());

    return InputStream(m_Env, nullptr, _inputStream);
}

//----------------------------------------------------------------------
//
//----------------------------------------------------------------------

QString ContentResolver::queryForString(const QString& uri, const QString& columnName)
{
    QStringList results = query(uri, columnName);
    QString result = results.length() > 0 ? results[0] : QString();
    return result;
}

//----------------------------------------------------------------------
//
//----------------------------------------------------------------------

qint64 ContentResolver::queryForLongLong(const QString& uri, const QString& columnName, qint64 defaultValue)
{
    QString resultString = queryForString(uri, columnName);
    bool ok = false;
    qint64 resultLongLong = resultString.toLongLong(&ok);
    return ok ? resultLongLong : defaultValue;
}

//----------------------------------------------------------------------
//
//----------------------------------------------------------------------

QAndroidJniObject ContentResolver::contentResolver(QAndroidJniEnvironment& env)
{
    JniExceptionCheck check(env);

    QAndroidJniObject context = QtAndroid::androidContext();
    if ( !context.isValid() )
    {
        return QAndroidJniObject();
    }

    QAndroidJniObject contentResolver = context.callObjectMethod(
                "getContentResolver",
                "()Landroid/content/ContentResolver;" );
    return contentResolver;
}

//----------------------------------------------------------------------
//
//----------------------------------------------------------------------