搞了好几天。一直都拍不了照，自动退出，不然就是拍了显示不出来，最后还是看书成功的。简单总结了一下，下面有从网上搜的各种代码，都尝试过了，最后的是书本的。
///--------能拍照，拍了显示不了----------
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
//获取系統版本
int currentapiVersion = android.os.Build.VERSION.SDK_INT;
if (currentapiVersion < 24) {
// 从文件中创建uri
imageUri = Uri.fromFile(imgfile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
} else {
//兼容android7.0 使用共享文件的形式
ContentValues contentValues = new ContentValues(1);
contentValues.put(MediaStore.Images.Media.DATA, imgfile.getAbsolutePath());
//检查是否有存储权限，以免崩溃
if (ContextCompat.checkSelfPermission(AddinfoActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
//申请WRITE_EXTERNAL_STORAGE权限
Toast.makeText(AddinfoActivity.this, "请开启存储权限", Toast.LENGTH_SHORT).show();
return;
}
imageUri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
}
Log.d(TAG, "onClick2:"+imageUri);
tmp_path = imgfile.getPath();
Log.d(TAG, "onClick3:"+tmp_path);
// 开启一个带有返回值的Activity，请求码为PHOTO_REQUEST_CAREMA
startActivityForResult(intent, 11);
//拍照功能
Time time = new Time();
time.setToNow();
String strtime = time.year+(time.month+1)+time.monthDay+time.hour+time.minute+time.second+""; //加个空将数字格式转为字符串格式
tmp_path = Environment.getExternalStorageState()+"/image"+strtime+".jpg";
//Log.d(TAG, "onClick2:"+tmp_path);
File imgfile = new File(tmp_path);
Log.d(TAG, "onClick3:"+imgfile);
try {
if(imgfile.exists()){
imgfile.delete();
}
imgfile.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
/*Uri imageUri;
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
imageUri = FileProvider.getUriForFile(AddinfoActivity.this, "com.example.a17251101128_chen_planner.fileprovider", imgfile);
}
else {
imageUri = Uri.fromFile(imgfile);
}
Log.d(TAG, "onClick4: "+ imageUri);*/
//Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
//intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
Uri imageUri;
if (ContextCompat.checkSelfPermission(AddinfoActivity.this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions((Activity) AddinfoActivity.this, new String[]{Manifest.permission.CAMERA}, 1);
} else {
//权限已经被授予，在这里直接写要执行的相应方法即可
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
imageUri = FileProvider.getUriForFile(AddinfoActivity.this, "com.example.a17251101128_chen_planner.fileprovider", imgfile);
}
else {
imageUri = Uri.fromFile(imgfile);
}
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
// 指定调用相机拍照后照片的储存路径
//intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(imgfile));
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
startActivityForResult(intent, 11);
}
- 在上面的基础上小改
//currentapiVersion的方法，这个可以拍照的
int currentapiVersion = android.os.Build.VERSION.SDK_INT;
Log.e("currentapiVersion","currentapiVersion====>"+currentapiVersion);
if (currentapiVersion<24){
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(imgfile));
startActivityForResult(intent, 11);
}else {
ContentValues contentValues = new ContentValues(1);
contentValues.put(MediaStore.Images.Media.DATA, imgfile.getAbsolutePath());
Uri uri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,contentValues);
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
startActivityForResult(intent, 11);
}
最终我的版本
//拍照功能
Time time = new Time();
time.setToNow();
String strtime = time.year+(time.month+1)+time.monthDay+time.hour+time.minute+time.second+""; //加个空将数字格式转为字符串格式
//tmp_path = Environment.getExternalStorageState()+"/image"+strtime+".jpg"; //原来是这里的问题
tmp_path = getExternalCacheDir()+"/image"+strtime+".jpg"; //这里
//File imgfile = new File(getExternalCacheDir(), tmp_path);
File imgfile = new File(tmp_path);
try {
if(imgfile.exists()){
imgfile.delete();
}
imgfile.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
///--------拍照功能，拍了显示不了，可以了现在----------
if (ContextCompat.checkSelfPermission(AddinfoActivity.this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions((Activity) AddinfoActivity.this, new String[]{Manifest.permission.CAMERA}, 1);
} else {
//权限已经被授予，在这里直接写要执行的相应方法即可
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
imageUri = FileProvider.getUriForFile(AddinfoActivity.this, "com.example.a17251101128_chen_planner.fileprovider", imgfile);
}
else {
imageUri = Uri.fromFile(imgfile);
}
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
// 指定调用相机拍照后照片的储存路径
//intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(imgfile));
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
startActivityForResult(intent, 11);
}
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