我正在使用此代码来拍照并拍摄照片。当设备有SD卡但没有SD卡给我吐司时工作正常请插入SD卡。那有什么解决方案吗？
这是我的代码：
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case 1:
if (resultCode == RESULT_OK) {
Uri chosenImageUri = data.getData();
String imagepath = getpath(chosenImageUri);
extension = imagepath.substring(imagepath.lastIndexOf(".")+1);
Bitmap bitmap = BitmapFactory.decodeFile(imagepath);
saveToInternalSorage(bitmap, "image1");
Constant._profilePhotoUrl = Constant.convertBitmapToBase64(bitmap);
if(flag == 1){
_uploadImageView1.setImageBitmap(Bitmap.createScaledBitmap(
bitmap,100,100,false));
_uploadImageView1.setScaleType(ImageView.ScaleType.FIT_XY);
_chooseLayout.setVisibility(View.GONE);
_footerLayout.setVisibility(View.VISIBLE);
}else if (flag == 2) {
_uploadImageView2.setImageBitmap(Bitmap.createScaledBitmap(
bitmap,100,100,false));
_uploadImageView2.setScaleType(ImageView.ScaleType.FIT_XY);
_footerLayout.setVisibility(View.VISIBLE);
_chooseLayout.setVisibility(View.GONE);
}else if (flag == 3) {
_uploadImageView3.setImageBitmap(Bitmap.createScaledBitmap(
bitmap,100,100,false));
_uploadImageView3.setScaleType(ImageView.ScaleType.FIT_XY);
_footerLayout.setVisibility(View.VISIBLE);
_chooseLayout.setVisibility(View.GONE);
}
} else {
Toast.makeText(UploadFileActivity.this, "Unable to get Image",
Toast.LENGTH_SHORT).show();
}
break;
case 2:
if (resultCode == RESULT_OK) {
try {
Bitmap bitmap = (Bitmap) data.getExtras().get("data");
/*_uploadImageView1.setImageBitmap(Bitmap
.createScaledBitmap(bitmap, 120, 120, false));*/
if(flag == 1){
_uploadImageView1.setImageBitmap(Bitmap.createScaledBitmap(
bitmap,100,100,false));
_uploadImageView1.setRotation(90);
_uploadImageView1.setScaleType(ImageView.ScaleType.FIT_XY);
_chooseLayout.setVisibility(View.GONE);
_footerLayout.setVisibility(View.VISIBLE);
Constant._profilePhotoUrl = Constant.convertBitmapToBase64(bitmap);
}else if (flag == 2) {
_uploadImageView2.setImageBitmap(Bitmap.createScaledBitmap(
bitmap,100,100,false));
_uploadImageView2.setRotation(90);
_uploadImageView1.setScaleType(ImageView.ScaleType.FIT_XY);
_chooseLayout.setVisibility(View.GONE);
_footerLayout.setVisibility(View.VISIBLE);
}else if (flag == 3) {
_uploadImageView3.setImageBitmap(Bitmap.createScaledBitmap(
bitmap,100,100,false));
_uploadImageView3.setRotation(90);
_uploadImageView3.setScaleType(ImageView.ScaleType.FIT_XY);
_chooseLayout.setVisibility(View.GONE);
_footerLayout.setVisibility(View.VISIBLE);
}
} catch (OutOfMemoryError e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
} else {
Toast.makeText(UploadFileActivity.this, "Unable to get Image",
Toast.LENGTH_SHORT).show();
}
break;
}
}
private String getpath(Uri chosenImageUri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(chosenImageUri, projection, null, null,
null);
int column = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column);
}
答案 0 :(得分：0)
尝试以下代码：
public Bitmap loadBitmap(String url)
{
Bitmap bm = null;
InputStream is = null;
BufferedInputStream bis = null;
try
{
URLConnection conn = new URL(url).openConnection();
conn.connect();
is = conn.getInputStream();
bis = new BufferedInputStream(is, 8192);
bm = BitmapFactory.decodeStream(bis);
}
catch (Exception e)
{
e.printStackTrace();
}
finally {
if (bis != null)
{
try
{
bis.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
if (is != null)
{
try
{
is.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
return bm;
}
private String saveInInternalSorage(Bitmap bImage){
ContextWrapper cw = new ContextWrapper(getApplicationContext());
File dir = cw.getDir("image", Context.MODE_PRIVATE);
File path=new File(dir,"img.jpg");
FileOutputStream fos = null;
try {
fos = new FileOutputStream(path);
bImage.compress(Bitmap.CompressFormat.PNG, 100, fos);
fos.close();
} catch (Exception e) {
e.printStackTrace();
}
return dir.getAbsolutePath();
}
Bitmap btm = loadBitmap(yourUri);
saveInInternalSorage(btm);
答案 1 :(得分：0)
您将尝试以下功能将文件存储到内存...
以下功能用于读取磁盘上可用的外部存储器...
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
mExternalStorageAvailable = mExternalStorageWriteable = true;
} else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
mExternalStorageAvailable = true;
mExternalStorageWriteable = false;
} else {
mExternalStorageAvailable = mExternalStorageWriteable = false;
}
以下代码用于将数据存储到内部存储器中。
public class StartingActivity extends Activity {
Camera camera;
CameraPreview preview;
@SuppressWarnings("unused")
private static final int VIDEO_REQUEST_CODE = 200;
public static final int MEDIA_TYPE_IMAGE = 1;
public static final int MEDIA_TYPE_VIDEO = 2;
public static final String DIR_NAME = "My_Album";
private File file;
ImageButton cap;
ImageButton video;
ImageButton gallery;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.starting);
cap = (ImageButton) findViewById(R.id.cap);
video = (ImageButton) findViewById(R.id.video);
gallery = (ImageButton) findViewById(R.id.gallery);
camera = getInstance();
preview = new CameraPreview(this, camera);
FrameLayout layout = (FrameLayout) findViewById(R.id.image_frame);
layout.addView(preview);
cap.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
camera.takePicture(null, null, picture);
}
});
gallery.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(StartingActivity.this,
GridViewActivity.class);
startActivity(intent);
}
});
}
public boolean checkCameraFeature(Context context) {
if (context.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_CAMERA)) {
return true;
} else {
return false;
}
}
public static Camera getInstance() {
Camera c = null;
try {
c = Camera.open();
} catch (Exception exception) {
// Nothing....
}
return c;
}
private File getOutputMediaFile(int imageRequestCode) {
ContextWrapper cw = new ContextWrapper(getApplicationContext());
File directory = cw.getDir("My_Album", Context.MODE_PRIVATE);
if (!directory.exists()) {
if (!directory.mkdirs()) {
Log.d("MyCameraApp", "failed to create directory");
directory.mkdirs();
}
}
String name = null;
Calendar cal = Calendar.getInstance();
System.out.println("TIME->" + cal.getTime());
SimpleDateFormat date = new SimpleDateFormat("dd_MM_yyyy_hh_mm_ss");
String value = date.format(cal.getTime());
name = "Image_" + value + ".jpg";
File image_file = new File(directory, name);
return image_file;
}
PictureCallback picture = new PictureCallback() {
@Override
public void onPictureTaken(byte[] data, Camera camera) {
File image_file = getOutputMediaFile(MEDIA_TYPE_IMAGE);
if (image_file == null) {
}
try {
FileOutputStream o = new FileOutputStream(image_file);
o.write(data);
o.close();
Toast.makeText(getBaseContext(), "Image saved",
Toast.LENGTH_SHORT).show();
} catch (FileNotFoundException exception) {
} catch (IOException e) {
}
camera.startPreview();
}
};
}
相机预览课程..
public class CameraPreview extends SurfaceView implements SurfaceHolder.Callback {
Camera myCamera;
SurfaceHolder mySurfaceHolder;
@SuppressWarnings("deprecation")
public CameraPreview(Context context,Camera cam)
{
super(context);
this.myCamera=cam;
this.mySurfaceHolder=getHolder();
mySurfaceHolder.addCallback(this);
mySurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,int height)
{
if(mySurfaceHolder.getSurface()==null)
{
try
{
myCamera.stopPreview();
}
catch(Exception exception)
{
}
}
try
{
myCamera.setPreviewDisplay(mySurfaceHolder);
myCamera.startPreview();
}
catch(Exception e)
{
Log.d(null,"Error Starting Camera preview :"+e.getMessage());
}
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
try {
myCamera.setPreviewDisplay(holder);
myCamera.startPreview();
} catch (IOException e) {
Log.d( "Error setting camera preview: " + e.getMessage(), null);
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
}
}
答案 2 :(得分：0)
像
一样打电话 getallimages(Environment.getExternalStorageDirectory());
以下是方法
private void getallimages(File dir)
{
String[] STAR = { "*" };
controller.images.clear();
final String orderBy = MediaStore.Images.Media.DEFAULT_SORT_ORDER;
Cursor imagecursor = cntx.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, STAR, null, null, orderBy);
int image_column_index = imagecursor.getColumnIndex(MediaStore.Images.Media.DATA);
int count = imagecursor.getCount();
for (int i = 0; i < count; i++) {
imagecursor.moveToPosition(i);
int id = imagecursor.getInt(image_column_index);
ImageItem imageItem = new ImageItem();
if(new File(imagecursor.getString(imagecursor.getColumnIndex(MediaStore.Images.Media.DATA))).length()<=10485760)
{
imageItem.filePath = imagecursor.getString(imagecursor.getColumnIndex(MediaStore.Images.Media.DATA));
imageItem.id = id;
imageItem.selection = false; //newly added item will be selected by default
controller.images.add(imageItem); //in this i add all image in wrapper class
}
}
}
最后，我想给出一个刷新代码，它会刷新您的Android图库，用于新添加或下载或新点击的图片，以便在扫描开始或上面的方法粘贴它
sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(new File(filePath))));