Qt和Android - 从图库中获取路径(Qt and Android - Get path from image in gallery)
我已经完成了从Android gallery获取图像的代码。 我正在使用QtAndroid在Qt中编写一个等效的java代码。
我已经打开了库，选择了图像并收到了路径，但它返回了文件的MediaColumn ，我需要绝对路径。
如何使用QAndroid在Qt中编写Java等效代码来QAndroid文件的绝对路径？
这是我做的代码：
imagepickerandroid.h
#ifndef IMAGEPICKERANDROID_H #define IMAGEPICKERANDROID_H #include <QObject> #include <QtAndroidExtras> #include <QDebug> class imagePickerAndroid : public QObject, public QAndroidActivityResultReceiver { Q_OBJECT public: imagePickerAndroid(); void buscaImagem(); virtual void handleActivityResult(int receiverRequestCode, int resultCode, const QAndroidJniObject & data); signals: void imagemCaminhoSignal(QString); }; #endif // IMAGEPICKERANDROID_Himagepickerandroid.cpp
#include "imagepickerandroid.h" imagePickerAndroid::imagePickerAndroid() { } void imagePickerAndroid::buscaImagem() { QAndroidJniObject ACTION_PICK = QAndroidJniObject::fromString("android.intent.action.GET_CONTENT"); QAndroidJniObject intent("android/content/Intent"); if (ACTION_PICK.isValid() && intent.isValid()) { intent.callObjectMethod("setAction", "(Ljava/lang/String;)Landroid/content/Intent;", ACTION_PICK.object<jstring>()); intent.callObjectMethod("setType", "(Ljava/lang/String;)Landroid/content/Intent;", QAndroidJniObject::fromString("image/*").object<jstring>()); QtAndroid::startActivity(intent.object<jobject>(), 101, this); qDebug() << "OK"; } else { qDebug() << "ERRO"; } } void imagePickerAndroid::handleActivityResult(int receiverRequestCode, int resultCode, const QAndroidJniObject &data) { qDebug() << "Trabalha com os dados"; jint RESULT_OK = QAndroidJniObject::getStaticField<jint>("android/app/Activity", "RESULT_OK"); if (receiverRequestCode == 101 && resultCode == RESULT_OK) { QString imagemCaminho = data.callObjectMethod("getData", "()Landroid/net/Uri;").callObjectMethod("getPath", "()Ljava/lang/String;").toString(); emit imagemCaminhoSignal(imagemCaminho); qDebug() << imagemCaminho; } else { qDebug() << "Caminho errado"; } }I have done a code to get an image from Android gallery. I am using QtAndroid to write a equivalent java code in Qt.
I have already opened the gallery, selected the image and received the path, but it returns the MediaColumn of the file and I need the absolute path.
How can I get the absolute path of the file using QAndroid to write a Java equivalent code in Qt?
Here is the code I have done:
imagepickerandroid.h
#ifndef IMAGEPICKERANDROID_H #define IMAGEPICKERANDROID_H #include <QObject> #include <QtAndroidExtras> #include <QDebug> class imagePickerAndroid : public QObject, public QAndroidActivityResultReceiver { Q_OBJECT public: imagePickerAndroid(); void buscaImagem(); virtual void handleActivityResult(int receiverRequestCode, int resultCode, const QAndroidJniObject & data); signals: void imagemCaminhoSignal(QString); }; #endif // IMAGEPICKERANDROID_Himagepickerandroid.cpp
#include "imagepickerandroid.h" imagePickerAndroid::imagePickerAndroid() { } void imagePickerAndroid::buscaImagem() { QAndroidJniObject ACTION_PICK = QAndroidJniObject::fromString("android.intent.action.GET_CONTENT"); QAndroidJniObject intent("android/content/Intent"); if (ACTION_PICK.isValid() && intent.isValid()) { intent.callObjectMethod("setAction", "(Ljava/lang/String;)Landroid/content/Intent;", ACTION_PICK.object<jstring>()); intent.callObjectMethod("setType", "(Ljava/lang/String;)Landroid/content/Intent;", QAndroidJniObject::fromString("image/*").object<jstring>()); QtAndroid::startActivity(intent.object<jobject>(), 101, this); qDebug() << "OK"; } else { qDebug() << "ERRO"; } } void imagePickerAndroid::handleActivityResult(int receiverRequestCode, int resultCode, const QAndroidJniObject &data) { qDebug() << "Trabalha com os dados"; jint RESULT_OK = QAndroidJniObject::getStaticField<jint>("android/app/Activity", "RESULT_OK"); if (receiverRequestCode == 101 && resultCode == RESULT_OK) { QString imagemCaminho = data.callObjectMethod("getData", "()Landroid/net/Uri;").callObjectMethod("getPath", "()Ljava/lang/String;").toString(); emit imagemCaminhoSignal(imagemCaminho); qDebug() << imagemCaminho; } else { qDebug() << "Caminho errado"; } }最满意答案
回答我自己的问题。
这是使用用Qt编写的java等效代码从android gallery获取full image path代码：
#include "imagepickerandroid.h" imagePickerAndroid::imagePickerAndroid() { } void imagePickerAndroid::buscaImagem() { QAndroidJniObject ACTION_PICK = QAndroidJniObject::getStaticObjectField("android/content/Intent", "ACTION_PICK", "Ljava/lang/String;"); QAndroidJniObject EXTERNAL_CONTENT_URI = QAndroidJniObject::getStaticObjectField("android/provider/MediaStore$Images$Media", "EXTERNAL_CONTENT_URI", "Landroid/net/Uri;"); QAndroidJniObject intent=QAndroidJniObject("android/content/Intent", "(Ljava/lang/String;Landroid/net/Uri;)V", ACTION_PICK.object<jstring>(), EXTERNAL_CONTENT_URI.object<jobject>()); if (ACTION_PICK.isValid() && intent.isValid()) { intent.callObjectMethod("setType", "(Ljava/lang/String;)Landroid/content/Intent;", QAndroidJniObject::fromString("image/*").object<jstring>()); QtAndroid::startActivity(intent.object<jobject>(), 101, this); qDebug() << "OK"; } else { qDebug() << "ERRO"; } } void imagePickerAndroid::handleActivityResult(int receiverRequestCode, int resultCode, const QAndroidJniObject &data) { jint RESULT_OK = QAndroidJniObject::getStaticField<jint>("android/app/Activity", "RESULT_OK"); if (receiverRequestCode == 101 && resultCode == RESULT_OK) { QAndroidJniObject uri = data.callObjectMethod("getData", "()Landroid/net/Uri;"); QAndroidJniObject dadosAndroid = QAndroidJniObject::getStaticObjectField("android/provider/MediaStore$MediaColumns", "DATA", "Ljava/lang/String;"); QAndroidJniEnvironment env; jobjectArray projecao = (jobjectArray)env->NewObjectArray(1, env->FindClass("java/lang/String"), NULL); jobject projacaoDadosAndroid = env->NewStringUTF(dadosAndroid.toString().toStdString().c_str()); env->SetObjectArrayElement(projecao, 0, projacaoDadosAndroid); QAndroidJniObject contentResolver = QtAndroid::androidActivity().callObjectMethod("getContentResolver", "()Landroid/content/ContentResolver;"); QAndroidJniObject cursor = contentResolver.callObjectMethod("query", "(Landroid/net/Uri;[Ljava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)Landroid/database/Cursor;", uri.object<jobject>(), projecao, NULL, NULL, NULL); jint columnIndex = cursor.callMethod<jint>("getColumnIndex", "(Ljava/lang/String;)I", dadosAndroid.object<jstring>()); cursor.callMethod<jboolean>("moveToFirst", "()Z"); QAndroidJniObject resultado = cursor.callObjectMethod("getString", "(I)Ljava/lang/String;", columnIndex); QString imagemCaminho = "file://" + resultado.toString(); emit imagemCaminhoSignal(imagemCaminho); } else { qDebug() << "Caminho errado"; } }Answering my own question.
Here is the code to get the full image path from android gallery using java equivalent code written with Qt:
#include "imagepickerandroid.h" imagePickerAndroid::imagePickerAndroid() { } void imagePickerAndroid::buscaImagem() { QAndroidJniObject ACTION_PICK = QAndroidJniObject::getStaticObjectField("android/content/Intent", "ACTION_PICK", "Ljava/lang/String;"); QAndroidJniObject EXTERNAL_CONTENT_URI = QAndroidJniObject::getStaticObjectField("android/provider/MediaStore$Images$Media", "EXTERNAL_CONTENT_URI", "Landroid/net/Uri;"); QAndroidJniObject intent=QAndroidJniObject("android/content/Intent", "(Ljava/lang/String;Landroid/net/Uri;)V", ACTION_PICK.object<jstring>(), EXTERNAL_CONTENT_URI.object<jobject>()); if (ACTION_PICK.isValid() && intent.isValid()) { intent.callObjectMethod("setType", "(Ljava/lang/String;)Landroid/content/Intent;", QAndroidJniObject::fromString("image/*").object<jstring>()); QtAndroid::startActivity(intent.object<jobject>(), 101, this); qDebug() << "OK"; } else { qDebug() << "ERRO"; } } void imagePickerAndroid::handleActivityResult(int receiverRequestCode, int resultCode, const QAndroidJniObject &data) { jint RESULT_OK = QAndroidJniObject::getStaticField<jint>("android/app/Activity", "RESULT_OK"); if (receiverRequestCode == 101 && resultCode == RESULT_OK) { QAndroidJniObject uri = data.callObjectMethod("getData", "()Landroid/net/Uri;"); QAndroidJniObject dadosAndroid = QAndroidJniObject::getStaticObjectField("android/provider/MediaStore$MediaColumns", "DATA", "Ljava/lang/String;"); QAndroidJniEnvironment env; jobjectArray projecao = (jobjectArray)env->NewObjectArray(1, env->FindClass("java/lang/String"), NULL); jobject projacaoDadosAndroid = env->NewStringUTF(dadosAndroid.toString().toStdString().c_str()); env->SetObjectArrayElement(projecao, 0, projacaoDadosAndroid); QAndroidJniObject contentResolver = QtAndroid::androidActivity().callObjectMethod("getContentResolver", "()Landroid/content/ContentResolver;"); QAndroidJniObject cursor = contentResolver.callObjectMethod("query", "(Landroid/net/Uri;[Ljava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)Landroid/database/Cursor;", uri.object<jobject>(), projecao, NULL, NULL, NULL); jint columnIndex = cursor.callMethod<jint>("getColumnIndex", "(Ljava/lang/String;)I", dadosAndroid.object<jstring>()); cursor.callMethod<jboolean>("moveToFirst", "()Z"); QAndroidJniObject resultado = cursor.callObjectMethod("getString", "(I)Ljava/lang/String;", columnIndex); QString imagemCaminho = "file://" + resultado.toString(); emit imagemCaminhoSignal(imagemCaminho); } else { qDebug() << "Caminho errado"; } }更多推荐
发布评论