在我的
Android应用程序中,我必须使用相机按钮click.It工作完美的所有Android版本除了安卓7(牛轧糖).当我点击相机选项,即使权限打开,应用程序即将退出.我认为问题出在相机调用intent.Below是我的代码.
camera = (ImageView) dialog.findViewById(R.id.camera);
camera.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
clickCamera();
dialog.dismiss();
}
});
private void clickCamera() { // 1 for icon and 2 for attachment
if (ActivityCompat.checkSelfPermission(this,Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.CAMERA},MY_REQUEST_CODE);
}else {
if (ActivityCompat.checkSelfPermission(this,Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},MY_REQUEST_CODE_STORAGE);
}else{
currentImageUri = getImageFileUri();
Intent intentPicture = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intentPicture.putExtra(MediaStore.EXTRA_OUTPUT,currentImageUri); // set the image file name
// start the image capture Intent
startActivityForResult(intentPicture,REQUEST_CAMERA); // 1 for REQUEST_CAMERA and 2 for REQUEST_CAMERA_ATT
}
}
}
private static Uri getImageFileUri(){
// Create a storage directory for the images
// To be safe(er),you should check that the SDCard is mounted
// using Environment.getExternalStorageState() before doing this
imagePath = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),"MyProject");
if (! imagePath.exists()){
if (! imagePath.mkdirs()){
return null;
}else{
//create new folder
}
}
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File image = new File(imagePath,"MyProject_"+ timeStamp + ".jpg");
if(!image.exists()){
try {
image.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
// Create an File Uri
return Uri.fromFile(image);
}
@Override
public void onRequestPermissionsResult(int requestCode,String permissions[],int[] grantResults) {
switch (requestCode) {
case MY_REQUEST_CODE: {
// If request is cancelled,the result arrays are empty.
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted,yay! Do the
// contacts-related task you need to do.
if (ActivityCompat.checkSelfPermission(this,Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(MainActivity.this,MY_REQUEST_CODE_STORAGE);
}else{
currentImageUri = getImageFileUri();
Intent intentPicture = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intentPicture.putExtra(MediaStore.EXTRA_OUTPUT,currentImageUri); // set the image file name
// start the image capture Intent
startActivityForResult(intentPicture,REQUEST_CAMERA);
}
} else {
// permission denied,boo! Disable the
// functionality that depends on this permission.
Toast.makeText(this,"Doesn't have permission... ",Toast.LENGTH_SHORT).show();
}
return;
}
case MY_REQUEST_CODE_STORAGE : {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
currentImageUri = getImageFileUri();
Intent intentPicture = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intentPicture.putExtra(MediaStore.EXTRA_OUTPUT,currentImageUri); // set the image file name
// start the image capture Intent
startActivityForResult(intentPicture,REQUEST_CAMERA);
} else {
// permission denied,"Doesn't have permission...",Toast.LENGTH_SHORT).show();
}
return;
}
}
}
Nougat这里有什么问题.是因为getImageFileUri()返回的uri？请帮我解决这个问题.
解决方法
嘿,请关注
this thread作为参考.当您将targetSDK设置为24并更改以下内容时,它将向您展示如何使用文件提供程序.在你的私有静态Uri getImageFileUri()方法中
改变这一行
return Uri.fromFile(image);
至
FileProvider.getUriForFile(context,context.getApplicationContext().getPackageName() + ".provider",createImageFile());
希望这能帮助您解决问题.
欲了解更多,请访问 –
Setting Up File Sharing – Offical documentation
