如何将相机照片保存到我的android应用程序的相册文件夹中
我是android新手。我将创建一个android应用程序。我想在我的应用程序中创建一个相册文件夹,并将相机照片保存到相册文件夹中。请告诉我怎么做 我的代码是: 公共类CameraPhotoCapture扩展了活动{如何将相机照片保存到我的android应用程序的相册文件夹中,android,Android,我是android新手。我将创建一个android应用程序。我想在我的应用程序中创建一个相册文件夹,并将相机照片保存到相册文件夹中。请告诉我怎么做 我的代码是: 公共类CameraPhotoCapture扩展了活动{ final static int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 1; Uri imageUri = null; static TextView imageDetails = nul
final static int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 1;
Uri imageUri = null;
static TextView imageDetails = null;
public static ImageView showImg = null;
CameraPhotoCapture CameraActivity = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera_photo_capture);
CameraActivity = this;
imageDetails = (TextView) findViewById(R.id.imageDetails);
showImg = (ImageView) findViewById(R.id.showImg);
final Button photo = (Button) findViewById(R.id.photo);
photo.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
/***** Define the file-name to save photo taken by Camera activity *******/
String fileName = "Camera_Example.jpg";
// Create parameters for Intent with filename
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, fileName);
values.put(MediaStore.Images.Media.DESCRIPTION,"Image capture by camera");
/****** imageUri is the current activity attribute, define and save it for later usage *****/
imageUri = getContentResolver().insert(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
/****** EXTERNAL_CONTENT_URI : style URI for the "primary" external storage volume. ******/
/****** Standard Intent action that can be sent to have the camera application capture an image and return it. ******/
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
String imageId = convertImageUriToFile(imageUri,CameraActivity);
new LoadImagesFromSDCard().execute(""+imageId);
} else if (resultCode == RESULT_CANCELED) {
Toast.makeText(this, "Picture was not taken", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "Picture was not taken", Toast.LENGTH_SHORT).show();
}
}
}
public static String convertImageUriToFile (Uri imageUri, Activity activity) {
Cursor cursor = null;
int imageID = 0;
try {
/*********** Which columns values want to get *******/
String [] proj={
MediaStore.Images.Media.DATA,
MediaStore.Images.Media._ID,
MediaStore.Images.Thumbnails._ID,
MediaStore.Images.ImageColumns.ORIENTATION
};
cursor = activity.managedQuery(
imageUri, // Get data for specific image URI
proj, // Which columns to return
null, // WHERE clause; which rows to return (all rows)
null, // WHERE clause selection arguments (none)
null // Order-by clause (ascending by name)
);
int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID);
int columnIndexThumb = cursor.getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID);
int file_ColumnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
//int orientation_ColumnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.ImageColumns.ORIENTATION);
int size = cursor.getCount();
/******* If size is 0, there are no images on the SD Card. *****/
if (size == 0) {
imageDetails.setText("No Image");
}
else
{
int thumbID = 0;
if (cursor.moveToFirst()) {
/**************** Captured image details ************/
/***** Used to show image on view in LoadImagesFromSDCard class ******/
imageID = cursor.getInt(columnIndex);
thumbID = cursor.getInt(columnIndexThumb);
String Path = cursor.getString(file_ColumnIndex);
//String orientation = cursor.getString(orientation_ColumnIndex);
String CapturedImageDetails = " CapturedImageDetails : \n\n"
+" ImageID :"+imageID+"\n"
+" ThumbID :"+thumbID+"\n"
+" Path :"+Path+"\n";
// Show Captured Image detail on view
imageDetails.setText(CapturedImageDetails);
}
}
} finally {
if (cursor != null) {
cursor.close();
}
}
return ""+imageID;
}
/**
* Async task for loading the images from the SD card.
*
* @author Android Example
*
*/
// Class with extends AsyncTask class
public class LoadImagesFromSDCard extends AsyncTask<String, Void, Void> {
private ProgressDialog Dialog = new ProgressDialog(CameraPhotoCapture.this);
Bitmap mBitmap;
protected void onPreExecute() {
/****** NOTE: You can call UI Element here. *****/
//UI Element
Dialog.setMessage("Loading image from Sdcard..");
Dialog.show();
}
// Call after onPreExecute method
protected Void doInBackground(String... urls) {
Bitmap bitmap = null;
Bitmap newBitmap = null;
Uri uri = null;
try {
/** Uri.withAppendedPath Method Description
* Parameters
* baseUri Uri to append path segment to
* pathSegment encoded path segment to append
* Returns
* a new Uri based on baseUri with the given segment appended to the path
*/
uri = Uri.withAppendedPath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "" + urls[0]);
/************** Decode an input stream into a bitmap. *********/
bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(uri));
if (bitmap != null) {
/********* Creates a new bitmap, scaled from an existing bitmap. ***********/
newBitmap = Bitmap.createScaledBitmap(bitmap, 170, 170, true);
bitmap.recycle();
if (newBitmap != null) {
mBitmap = newBitmap;
}
}
} catch (IOException e) {
//Error fetching image, try to recover
/********* Cancel execution of this task. **********/
cancel(true);
}
return null;
}
protected void onPostExecute(Void unused) {
// NOTE: You can call UI Element here.
// Close progress dialog
Dialog.dismiss();
if(mBitmap != null)
showImg.setImageBitmap(mBitmap);
}
}
final static int CAPTURE\u IMAGE\u ACTIVITY\u REQUEST\u code=1;
Uri-imageUri=null;
静态TextView imageDetails=null;
公共静态图像视图showImg=null;
CameraPhotoCapture CameraActivity=null;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity\u camera\u photo\u capture);
CameraActivity=此;
imageDetails=(TextView)findViewById(R.id.imageDetails);
showImg=(ImageView)findViewById(R.id.showImg);
最终按钮照片=(按钮)findViewById(R.id.photo);
photo.setOnClickListener(新的OnClickListener(){
公共void onClick(视图v){
/*****定义文件名以保存相机拍摄的照片活动*******/
字符串fileName=“Camera_Example.jpg”;
//使用文件名为Intent创建参数
ContentValues=新的ContentValues();
value.put(MediaStore.Images.Media.TITLE,文件名);
value.put(MediaStore.Images.Media.DESCRIPTION,“摄像头图像捕获”);
/******imageUri是当前活动属性,请定义并保存它以供以后使用*****/
imageUri=getContentResolver()。插入(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,值);
/******外部内容URI:“主”外部存储卷的样式URI******/
/******可发送的标准意图操作,以使相机应用程序捕获图像并返回。******/
意向意向=新意向(MediaStore.ACTION\u IMAGE\u CAPTURE);
intent.putExtra(MediaStore.EXTRA_输出,imageUri);
意向。putExtra(MediaStore.EXTRA视频质量,1);
startActivityForResult(意图、捕获、图像、活动、请求、代码);
}
});
}
@凌驾
受保护的void onActivityResult(int请求代码、int结果代码、意图数据)
{
if(requestCode==捕获\图像\活动\请求\代码){
if(resultCode==RESULT\u OK){
字符串imageId=convertImageUriToFile(imageUri,CameraActivity);
新建LoadImagesFromsCard()。执行(“+imageId”);
}else if(resultCode==RESULT\u取消){
Toast.makeText(此“图片未拍摄”,Toast.LENGTH_SHORT).show();
}否则{
Toast.makeText(此“图片未拍摄”,Toast.LENGTH_SHORT).show();
}
}
}
公共静态字符串convertImageUriToFile(Uri imageUri,Activity活动){
游标=空;
int-imageID=0;
试一试{
/***********要获取哪些列值*******/
字符串[]项目={
MediaStore.Images.Media.DATA,
MediaStore.Images.Media.\u ID,
MediaStore。图像。缩略图。\u ID,
MediaStore.Images.ImageColumns.ORIENTATION
};
游标=活动。managedQuery(
imageUri,//获取特定图像URI的数据
proj,//返回哪些列
null,//WHERE子句;返回哪些行(所有行)
null,//WHERE子句选择参数(无)
null//Order by子句(按名称升序)
);
int columnIndex=cursor.getColumnIndexOrThrow(MediaStore.Images.Media.\u ID);
int columnIndexThumb=cursor.getColumnIndexOrThrow(MediaStore.Images.Thumbnails.\u ID);
int file_ColumnIndex=cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
//int-orientation\u ColumnIndex=cursor.getColumnIndexOrThrow(MediaStore.Images.ImageColumns.orientation);
int size=cursor.getCount();
/*******如果大小为0,则SD卡上没有图像*****/
如果(大小==0){
imageDetails.setText(“无图像”);
}
其他的
{
int thumbID=0;
if(cursor.moveToFirst()){
/****************捕获的图像细节************/
/*****用于在LoadImagesFromsCard类中显示视图上的图像******/
imageID=cursor.getInt(columnIndex);
thumbID=cursor.getInt(columnIndexThumb);
字符串路径=cursor.getString(文件\列索引);
//字符串方向=cursor.getString(方向\列索引);
字符串CapturedImageDetails=“CapturedImageDetails:\n\n”
+ImageID:“+ImageID+”\n
+拇指ID:“+拇指ID+”\n
+路径:“+Path+”\n”;
//在视图上显示捕获的图像细节
imageDetails.setText(CapturedImageDetails);
}
}
}最后{
如果(光标!=null){
cursor.close();
}
}
返回“”+imageID;
}
/**
*用于从SD卡加载图像的异步任务。
*
*@author-Android示例
*
*/
//使用扩展的AsyncTask类初始化
公共类LoadImagesFromsCard扩展异步任务{
private ProgressDialog=新建ProgressDialog(CameraPhotoCapture.this);
位图mBitmap;
受保护的void onPreExecute(){
/
String path = Environment.getExternalStorageDirectory() + "/appsalbum/example.jpg";
File file = new File(path);
Uri outputFileUri = Uri.fromFile( file );
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE );
intent.putExtra( MediaStore.EXTRA_OUTPUT, outputFileUri );
startActivityForResult( intent, CAPTURE_IMAGE );