Android 安卓onclick单选按钮相机不工作
我有一个单选按钮。当我点击单选按钮时,相机意图在使用相机拍摄图像后打开。图像未更新到图像视图 我已使用清单文件中的所有权限Android 安卓onclick单选按钮相机不工作,android,onactivityresult,Android,Onactivityresult,我有一个单选按钮。当我点击单选按钮时,相机意图在使用相机拍摄图像后打开。图像未更新到图像视图 我已使用清单文件中的所有权限 RB_PhotoStatus .setOnCheckedChangeListener(new android.widget.RadioGroup.OnCheckedChangeListener() { @Override public void onCheckedChanged(Radi
RB_PhotoStatus
.setOnCheckedChangeListener(new android.widget.RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group,
int checkedId) {
switch (checkedId) {
case R.id.yes:
//photoCollected = "Yes";
// create intent with ACTION_IMAGE_CAPTURE action
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, 0);
break;
case R.id.no:
photoCollected = "No";
break;
}
}
});
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Bitmap bp = (Bitmap) data.getExtras().get("data");
imageView1.setImageBitmap(bp);
}
拍照很简单
这个答案解释了如何使用现有的相机应用程序拍摄照片
<manifest ... >
<uses-feature android:name="android.hardware.camera"
android:required="true" />
...
</manifest>
static final int REQUEST_IMAGE_CAPTURE = 1;
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
}
}
摄像机返回意图和活动覆盖功能上的数据活动结果如下:-
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
Bitmap imageBitmap = (Bitmap) extras.get("data");
mImageView.setImageBitmap(imageBitmap);
}
}
欲了解更多信息,请点击以下链接:
简单地拍照
这个答案解释了如何使用现有的相机应用程序拍摄照片
<manifest ... >
<uses-feature android:name="android.hardware.camera"
android:required="true" />
...
</manifest>
static final int REQUEST_IMAGE_CAPTURE = 1;
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
}
}
摄像机返回意图和活动覆盖功能上的数据活动结果如下:-
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
Bitmap imageBitmap = (Bitmap) extras.get("data");
mImageView.setImageBitmap(imageBitmap);
}
}
欲了解更多信息,请点击以下链接:
它不起作用,因为Camera Intent不会返回整个位图,而只返回创建文件的引用(Uri)
Uri selectedImage = data.getData();
从该Uri中,您可以使用BitmapFactory.decodeFile重新加载位图。该文件无效,因为Camera Intent不会返回整个位图,而只返回对所创建文件的引用(Uri)
Uri selectedImage = data.getData();
private String mCurrentPhotoPath;
final String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
final File image = create_directory();
// Save a file: path for use with ACTION_VIEW intents
try {
mCurrentPhotoPath = image.getAbsolutePath();
} catch (Exception e) {
e.printStackTrace();
}
final Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
if (image != null) {
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(image));
startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
} else {
snackbar = Snackbar.make(findViewById(android.R.id.content), "An error has occurred", Snackbar.LENGTH_SHORT);
snackbar.setAction("Dismiss", clickListener);
snackbar.show();
}
}
}
public File create_directory() {
// Create an image file name
final String imageFileName;
final String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.ENGLISH).format(new Date());
final String user_id = "1_";
imageFileName = user_id + timeStamp + "_";
final String proj_name = "test";
final String folder_timeStamp = new SimpleDateFormat("yyyyMMdd", Locale.ENGLISH).format(new Date());
final String path = "/TEST/" + proj_name + "/" + folder_timeStamp;
final File dr = new File(Environment.getExternalStorageDirectory().getAbsolutePath(), path);
if (!dr.exists()) {
dr.mkdirs();
}
File image = null;
try {
image = File.createTempFile(imageFileName, ".jpg", dr);
} catch (IOException e) {
e.printStackTrace();
}
return image;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_IMAGE_CAPTURE) {
if (resultCode == RESULT_OK){
//do something with the image which is stored in mCurrentPhotoPath
}
}
}
您可以使用radiobuttonclick()上的BitmapFactory.decodeFile
从该Uri重新加载位图
private String mCurrentPhotoPath;
final String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
final File image = create_directory();
// Save a file: path for use with ACTION_VIEW intents
try {
mCurrentPhotoPath = image.getAbsolutePath();
} catch (Exception e) {
e.printStackTrace();
}
final Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
if (image != null) {
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(image));
startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
} else {
snackbar = Snackbar.make(findViewById(android.R.id.content), "An error has occurred", Snackbar.LENGTH_SHORT);
snackbar.setAction("Dismiss", clickListener);
snackbar.show();
}
}
}
public File create_directory() {
// Create an image file name
final String imageFileName;
final String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.ENGLISH).format(new Date());
final String user_id = "1_";
imageFileName = user_id + timeStamp + "_";
final String proj_name = "test";
final String folder_timeStamp = new SimpleDateFormat("yyyyMMdd", Locale.ENGLISH).format(new Date());
final String path = "/TEST/" + proj_name + "/" + folder_timeStamp;
final File dr = new File(Environment.getExternalStorageDirectory().getAbsolutePath(), path);
if (!dr.exists()) {
dr.mkdirs();
}
File image = null;
try {
image = File.createTempFile(imageFileName, ".jpg", dr);
} catch (IOException e) {
e.printStackTrace();
}
return image;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_IMAGE_CAPTURE) {
if (resultCode == RESULT_OK){
//do something with the image which is stored in mCurrentPhotoPath
}
}
}
onActivityResult()
如果你想得到位图,那么
bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), originalUri);
在radiobuttonclick()上
onActivityResult()
如果你想得到位图,那么
bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), originalUri);
正在调用onActivityResult()吗?imageView1是如何定义的?是否调用onActivityResult()?imageView1是如何定义的?