我知道有很多这样的例子,但我还没有发现用7.0+工作了坚实的例子。 我知道,我设置的图像,而不是原来的缩略图,但我不知道如何得到它。
这里是我的代码:
if( ContextCompat.checkSelfPermission(this, android.Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
requestPermissions(new String[]{android.Manifest.permission.CAMERA},
CAMERA_REQUEST_CODE);
}
}else{
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
startActivityForResult(takePictureIntent, CAMERA_REQUEST_CODE);
}
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_REQUEST_CODE&& resultCode == RESULT_OK && data != null ) {
Bitmap bitmap = (Bitmap) data.getExtras().get("data");
mImageView.setImageBitmap(bitmap);
}}
如果你问“我怎么得到全分辨率图像?”,供应EXTRA_OUTPUT
在ACTION_IMAGE_CAPTURE
Intent
,然后看该位置的图像时onActivityResult()
被调用RESULT_OK
您的要求。
此示例应用程序示出的技术中,使用FileProvider
在Android 7.0+更好的相容性:
/***
Copyright (c) 2008-2017 CommonsWare, LLC
Licensed under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy
of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required
by applicable law or agreed to in writing, software distributed under the
License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
OF ANY KIND, either express or implied. See the License for the specific
language governing permissions and limitations under the License.
Covered in detail in the book _The Busy Coder's Guide to Android Development_
https://commonsware.com/Android
*/
package com.commonsware.android.camcon;
import android.Manifest;
import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.ClipData;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v4.content.FileProvider;
import android.widget.Toast;
import java.io.File;
import java.util.List;
public class MainActivity extends Activity {
private static final String EXTRA_FILENAME=
"com.commonsware.android.camcon.EXTRA_FILENAME";
private static final String FILENAME="CameraContentDemo.jpeg";
private static final int CONTENT_REQUEST=1337;
private static final String AUTHORITY=
BuildConfig.APPLICATION_ID+".provider";
private static final String PHOTOS="photos";
private File output=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState==null) {
output=new File(new File(getFilesDir(), PHOTOS), FILENAME);
if (output.exists()) {
output.delete();
}
else {
output.getParentFile().mkdirs();
}
Intent i=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
Uri outputUri=FileProvider.getUriForFile(this, AUTHORITY, output);
i.putExtra(MediaStore.EXTRA_OUTPUT, outputUri);
if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.LOLLIPOP) {
i.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
}
else if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.JELLY_BEAN) {
ClipData clip=
ClipData.newUri(getContentResolver(), "A photo", outputUri);
i.setClipData(clip);
i.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
}
else {
List<ResolveInfo> resInfoList=
getPackageManager()
.queryIntentActivities(i, PackageManager.MATCH_DEFAULT_ONLY);
for (ResolveInfo resolveInfo : resInfoList) {
String packageName = resolveInfo.activityInfo.packageName;
grantUriPermission(packageName, outputUri,
Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
}
}
try {
startActivityForResult(i, CONTENT_REQUEST);
}
catch (ActivityNotFoundException e) {
Toast.makeText(this, R.string.msg_no_camera, Toast.LENGTH_LONG).show();
finish();
}
}
else {
output=(File)savedInstanceState.getSerializable(EXTRA_FILENAME);
}
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putSerializable(EXTRA_FILENAME, output);
}
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
if (requestCode == CONTENT_REQUEST) {
if (resultCode == RESULT_OK) {
Intent i=new Intent(Intent.ACTION_VIEW);
Uri outputUri=FileProvider.getUriForFile(this, AUTHORITY, output);
i.setDataAndType(outputUri, "image/jpeg");
i.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
try {
startActivity(i);
}
catch (ActivityNotFoundException e) {
Toast.makeText(this, R.string.msg_no_viewer, Toast.LENGTH_LONG).show();
}
finish();
}
}
}
}