机器人：摄像头不开棉花糖 [英] android : camera doesn't open in marshmallow
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问题描述
所以，我有如下code可打开摄像头，捕捉图像，并将其保存在SD卡。
So, I have below code that open camera, capture the image and save it on SDCard.
public void getPhotoFromCamera() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File mediaStorageDir = new File(
Environment.getExternalStorageDirectory()
+ File.separator
+ getString(R.string.directory_name_corp_chat)
+ File.separator
+ getString(R.string.directory_name_temp)
);
if (!mediaStorageDir.exists()) {
mediaStorageDir.mkdirs();
}
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",
Locale.getDefault()).format(new Date());
try {
mediaFile = File.createTempFile(
"TEMP_FULL_IMG_" + timeStamp,
".jpg",
mediaStorageDir
);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(mediaFile));
startActivityForResult(takePictureIntent, PICK_FROM_CAMERA);
} catch (IOException e) {
e.printStackTrace();
}
}
private void performCrop(Uri picUri) {
try {
Intent cropIntent = new Intent("com.android.camera.action.CROP");
cropIntent.setDataAndType(picUri, "image/*");
cropIntent.putExtra("crop", "true");
cropIntent.putExtra("aspectX", 1);
cropIntent.putExtra("aspectY", 1);
cropIntent.putExtra("outputX", 128);
cropIntent.putExtra("outputY", 128);
// retrieve data on return
cropIntent.putExtra("return-data", true);
File mediaStorageDir = new File(
Environment.getExternalStorageDirectory()
+ File.separator
+ getString(R.string.directory_name_corp_chat)
+ File.separator
+ getString(R.string.directory_name_temp)
);
if (!mediaStorageDir.exists()) {
mediaStorageDir.mkdirs();
}
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",
Locale.getDefault()).format(new Date());
try {
croppedFile = File.createTempFile(
"TEMP_CROPPED_IMG_" + timeStamp,
".jpg",
mediaStorageDir
);
cropIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(croppedFile));
startActivityForResult(cropIntent, PIC_CROP);
} catch (IOException e) {
e.printStackTrace();
}
}
// respond to users whose devices do not support the crop action
catch (ActivityNotFoundException anfe) {
// display an error message
String errorMessage = "Whoops - your device doesn't support the crop action!";
Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
toast.show();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_FROM_CAMERA) {
if (resultCode == RESULT_OK) {
performCrop(Uri.fromFile(mediaFile));
} else {
Log.i("Camera", "result cancel. Hence, deleting file: " + mediaFile.getPath());
Log.i("File deleted ", mediaFile.delete() + "");
}
}
if (requestCode == PICK_FROM_GALLERY) {
if (resultCode == RESULT_OK) {
performCrop(data.getData());
} else {
Log.i("Gallery", "result cancel");
}
}
if (requestCode == PIC_CROP) {
if (resultCode == RESULT_OK) {
imageView.setImageBitmap(BitmapFactory.decodeFile(croppedFile.getAbsolutePath()));
if (mediaFile != null) {
Log.i("Camera", "result cancel. Hence, deleting file: " + mediaFile.getPath());
Log.i("File deleted ", mediaFile.delete() + "");
}
} else {
if (croppedFile != null) {
Log.i("Camera", "result cancel. Hence, deleting file: " + croppedFile.getPath());
Log.i("File deleted ", croppedFile.delete() + "");
}
if (mediaFile != null) {
Log.i("Camera", "result cancel. Hence, deleting file: " + mediaFile.getPath());
Log.i("File deleted ", mediaFile.delete() + "");
}
}
}
}
如预期低于6.0的Android一切完美的作品。不过，这并不在Android 6.0棉花糖工作。事实上，它甚至不打开摄像头：（
Everything works perfect as expected below Android 6.0. But it doesn't work on Android 6.0 Marshmallow. In fact it doesn't even open the camera :(
我不知道我是否需要做一些特殊的棉花糖。我没有收到任何类型的错误太多，我可以张贴在这里。请帮助我。
I don't know whether I have to do something special for marshmallow. I am not getting any kind of error too, that I can post it here. Please help me out.
感谢。
推荐答案
所以，我完成了我的任务，就像如下：
So, I accomplished my task like as below:
检查许可我创建了如下一个单独的类：
public class MarshMallowPermission {
public static final int RECORD_PERMISSION_REQUEST_CODE = 1;
public static final int EXTERNAL_STORAGE_PERMISSION_REQUEST_CODE = 2;
public static final int CAMERA_PERMISSION_REQUEST_CODE = 3;
Activity activity;
public MarshMallowPermission(Activity activity) {
this.activity = activity;
}
public boolean checkPermissionForRecord(){
int result = ContextCompat.checkSelfPermission(activity, Manifest.permission.RECORD_AUDIO);
if (result == PackageManager.PERMISSION_GRANTED){
return true;
} else {
return false;
}
}
public boolean checkPermissionForExternalStorage(){
int result = ContextCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE);
if (result == PackageManager.PERMISSION_GRANTED){
return true;
} else {
return false;
}
}
public boolean checkPermissionForCamera(){
int result = ContextCompat.checkSelfPermission(activity, Manifest.permission.CAMERA);
if (result == PackageManager.PERMISSION_GRANTED){
return true;
} else {
return false;
}
}
public void requestPermissionForRecord(){
if (ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.RECORD_AUDIO)){
Toast.makeText(activity, "Microphone permission needed for recording. Please allow in App Settings for additional functionality.", Toast.LENGTH_LONG).show();
} else {
ActivityCompat.requestPermissions(activity,new String[]{Manifest.permission.RECORD_AUDIO},RECORD_PERMISSION_REQUEST_CODE);
}
}
public void requestPermissionForExternalStorage(){
if (ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE)){
Toast.makeText(activity, "External Storage permission needed. Please allow in App Settings for additional functionality.", Toast.LENGTH_LONG).show();
} else {
ActivityCompat.requestPermissions(activity,new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},EXTERNAL_STORAGE_PERMISSION_REQUEST_CODE);
}
}
public void requestPermissionForCamera(){
if (ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.CAMERA)){
Toast.makeText(activity, "Camera permission needed. Please allow in App Settings for additional functionality.", Toast.LENGTH_LONG).show();
} else {
ActivityCompat.requestPermissions(activity,new String[]{Manifest.permission.CAMERA},CAMERA_PERMISSION_REQUEST_CODE);
}
}
}
然后，对于获得
...
MarshMallowPermission marshMallowPermission = new MarshMallowPermission(this);
...
public void getPhotoFromCamera() {
if (!marshMallowPermission.checkPermissionForCamera()) {
marshMallowPermission.requestPermissionForCamera();
} else {
if (!marshMallowPermission.checkPermissionForExternalStorage()) {
marshMallowPermission.requestPermissionForExternalStorage();
} else {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File mediaStorageDir = new File(
Environment.getExternalStorageDirectory()
+ File.separator
+ getString(R.string.directory_name_corp_chat)
+ File.separator
+ getString(R.string.directory_name_images)
);
if (!mediaStorageDir.exists()) {
mediaStorageDir.mkdirs();
}
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",
Locale.getDefault()).format(new Date());
try {
mediaFile = File.createTempFile(
"IMG_" + timeStamp, /* prefix */
".jpg", /* suffix */
mediaStorageDir /* directory */
);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(mediaFile));
startActivityForResult(takePictureIntent, PICK_FROM_CAMERA);
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
这篇关于机器人：摄像头不开棉花糖的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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