ÓÉÓÚÔÚAndroid 7.0 ²ÉÓÃÁËStrictMode APIÕþ²ß½û£¬ÆäÖÐÓÐÒ»ÌõÏÞÖÆ¾ÍÊǶÔĿ¼·ÃÎʵÄÏÞÖÆ¡£
ÕâÏî±ä¸üÒâζ×ÅÎÒÃÇÎÞ·¨Í¨¹ýFile API·ÃÎÊÊÖ»ú´æ´¢ÉϵÄÊý¾Ý£¬Ò²¾ÍÊÇ˵£¬¸øÆäËûÓ¦Óô«µÝ file:// URI ÀàÐ͵ÄUri£¬¿ÉÄܻᵼÖ½ÓÊÜÕßÎÞ·¨·ÃÎʸ÷¾¶£¬²¢ÇÒ»á»á´¥·¢ FileUriExposedExceptionÒì³£¡£
StrictMode APIÕþ²ß½ûÖеÄÓ¦Óü乲ÏíÎļþ¾ÍÊǶÔÉÏÊöÏÞÖÆµÄÓ¦¶Ô·½·¨£¬ËüÖ¸Ã÷ÁËÎÒÃÇÔÚÔÚÓ¦Óü乲ÏíÎļþ¿ÉÒÔ·¢ËÍ content:// URIÀàÐ͵ÄUri£¬²¢ÊÚÓè URI ÁÙʱ·ÃÎÊȨÏÞ£¬¼´Ê¹ÓÃFileProvider
½ÓÏÂÀ´£¬ÎÒÃÇʹÓÃFileProviderʵÏÖµ÷ÓÃϵͳÏà»ú¡¢Ïà²á¡¢¼ô²ÃͼƬµÄ¹¦ÄܼæÈÝAndroid 7.0
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.hansion.chosehead"
android:grantUriPermissions="true"
android:exported="false">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/filepaths" />
</provider>
ÆäÖУº android:authorities ±íʾÊÚȨÁÐ±í£¬ÌîдÄãµÄÓ¦ÓðüÃû£¬µ±Óжà¸öÊÚȨʱ£¬Ó÷ֺŸô¿ª android:exported ±íʾ¸ÃÄÚÈÝÌṩÆ÷(ContentProvider)ÊÇ·ñÄܱ»µÚÈý·½³ÌÐò×é¼þʹÓ㬱ØÐëΪfalse£¬·ñÔò»á±¨Òì³££ºava.lang.RuntimeException: Unable to get provider android.support.v4.content.FileProvider: java.lang.SecurityException: Provider must not be exported android:grantUriPermissions="true" ±íʾÊÚÓè URI ÁÙʱ·ÃÎÊȨÏÞ android:resource ÊôÐÔÖ¸ÏòÎÒÃÇ×Ô¼°´´½¨µÄxmlÎļþµÄ·¾¶£¬ÎļþÃûËæ±ãÆð
<?xml version="1.0" encoding="utf-8"?>
<paths>
<external-path path="" name="image" />
</paths>
ÆäÖУº external-path ´ú±í¸ùĿ¼Ϊ: Environment.getExternalStorageDirectory() £¬Ò²¿ÉÒÔдÆäËûµÄ£¬È磺 files-path ´ú±í¸ùĿ¼Ϊ:Context.getFilesDir() cache-path ´ú±í¸ùĿ¼Ϊ:getCacheDir() ÆäpathÊôÐÔµÄÖµ´ú±í·¾¶ºó²ã¼¶Ãû³Æ£¬Îª¿ÕÔò´ú±í¾ÍÊǸùĿ¼£¬¼ÙÈçΪ¡°pictures¡±,¾Í´ú±í¶ÔÓ¦¸ùĿ¼ÏµÄpicturesĿ¼
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
ÔÚͨ¹ýIntentÌø×ªÏµÍ³Ïà»úǰ£¬ÎÒÃÇÐèÒª¶Ô°æ±¾½øÐÐÅжϣ¬Èç¹ûÔÚAndroid7.0ÒÔÉÏ,ʹÓÃFileProvider»ñÈ¡Uri£¬´úÂëÈçÏ£º
/**
* ´ÓÏà»ú»ñȡͼƬ
*/
private void getPicFromCamera() {
//ÓÃÓÚ±£´æµ÷ÓÃÏà»úÅÄÕÕºóËùÉú³ÉµÄÎļþ
tempFile = new File(Environment.getExternalStorageDirectory().getPath(), System.currentTimeMillis() + ".jpg");
//Ìø×ªµ½µ÷ÓÃϵͳÏà»ú
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//Åжϰ汾
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) { //Èç¹ûÔÚAndroid7.0ÒÔÉÏ,ʹÓÃFileProvider»ñÈ¡Uri
intent.setFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
Uri contentUri = FileProvider.getUriForFile(MainActivity.this, "com.hansion.chosehead", tempFile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, contentUri);
} else { //·ñÔòʹÓÃUri.fromFile(file)·½·¨»ñÈ¡Uri
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(tempFile));
}
startActivityForResult(intent, CAMERA_REQUEST_CODE);
}
Èç¹ûÄãºÃÆæÍ¨¹ýFileProvider»ñÈ¡µÄUriÊÇʲôÑùµÄ£¬¿ÉÒÔ´òÓ¡³öÀ´¿´Ò»¿´£¬ÀýÈ磺
content://com.hansion.chosehead/image/1509356493642.jpg
ÆäÖУº com.hansion.chosehead ÊÇÎҵİüÃû image ÊÇÉÏÎÄÖÐxmlÎļþÖеÄnameÊôÐÔµÄÖµ 1509356493642.jpg ÊÇÎÒ´´½¨µÄͼƬµÄÃû×Ö Ò²¾ÍÊÇ˵£¬content://com.hansion.chosehead/image/ ´ú±íµÄ¾ÍÊǸùĿ¼
/**
* ´ÓÏà²á»ñȡͼƬ
*/
private void getPicFromAlbm() {
Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
photoPickerIntent.setType("image/*");
startActivityForResult(photoPickerIntent, ALBUM_REQUEST_CODE);
}
/**
* ²Ã¼ôͼƬ
*/
private void cropPhoto(Uri uri) {
Intent intent = new Intent("com.android.camera.action.CROP");
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
intent.setDataAndType(uri, "image/*");
intent.putExtra("crop", "true");
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
intent.putExtra("outputX", 300);
intent.putExtra("outputY", 300);
intent.putExtra("return-data", true);
startActivityForResult(intent, CROP_REQUEST_CODE);
}
ÉÏÎÄÖУ¬Äã»á·¢ÏÖ£¬ÎÒÃÇÖ»¶ÔUri½øÐÐÁËÌØÊâ´¦Àí¡£Ã»´í£¬Õâ¾ÍÊǺËÐı仯
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
switch (requestCode) {
case CAMERA_REQUEST_CODE: //µ÷ÓÃÏà»úºó·µ»Ø
if (resultCode == RESULT_OK) {
//ÓÃÏà»ú·µ»ØµÄÕÕÆ¬È¥µ÷Óüô²ÃÒ²ÐèÒª¶ÔUri½øÐд¦Àí
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
Uri contentUri = FileProvider.getUriForFile(MainActivity.this, "com.hansion.chosehead", tempFile);
cropPhoto(contentUri);
} else {
cropPhoto(Uri.fromFile(tempFile));
}
}
break;
case ALBUM_REQUEST_CODE: //µ÷ÓÃÏà²áºó·µ»Ø
if (resultCode == RESULT_OK) {
Uri uri = intent.getData();
cropPhoto(uri);
}
break;
case CROP_REQUEST_CODE: //µ÷Óüô²Ãºó·µ»Ø
Bundle bundle = intent.getExtras();
if (bundle != null) {
//ÔÚÕâÀï»ñµÃÁ˼ô²ÃºóµÄBitmap¶ÔÏ󣬿ÉÒÔÓÃÓÚÉÏ´«
Bitmap image = bundle.getParcelable("data");
//ÉèÖõ½ImageViewÉÏ
mHeader_iv.setImageBitmap(image);
//Ò²¿ÉÒÔ½øÐÐһЩ±£´æ¡¢Ñ¹ËõµÈ²Ù×÷ºóÉÏ´«
// String path = saveImage("crop", image);
}
break;
}
}
public String saveImage(String name, Bitmap bmp) {
File appDir = new File(Environment.getExternalStorageDirectory().getPath());
if (!appDir.exists()) {
appDir.mkdir();
}
String fileName = name + ".jpg";
File file = new File(appDir, fileName);
try {
FileOutputStream fos = new FileOutputStream(file);
bmp.compress(Bitmap.CompressFormat.PNG, 100, fos);
fos.flush();
fos.close();
return file.getAbsolutePath();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
ÖÁ´Ë£¬¶ÔAndroid7.0µÄ¼æÈݾͽáÊøÁË ×ܽáһϣ¬ÔÚµ÷ÓÃÏà»úºÍ¼ô²Ãʱ£¬´«ÈëµÄUriÐèҪʹÓÃFileProviderÀ´»ñÈ¡
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private ImageView mHeader_iv;
//Ïà²áÇëÇóÂë
private static final int ALBUM_REQUEST_CODE = 1;
//Ïà»úÇëÇóÂë
private static final int CAMERA_REQUEST_CODE = 2;
//¼ô²ÃÇëÇóÂë
private static final int CROP_REQUEST_CODE = 3;
//µ÷ÓÃÕÕÏà»ú·µ»ØÍ¼Æ¬Îļþ
private File tempFile;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}
private void initView() {
mHeader_iv = (ImageView) findViewById(R.id.mHeader_iv);
Button mGoCamera_btn = (Button) findViewById(R.id.mGoCamera_btn);
Button mGoAlbm_btn = (Button) findViewById(R.id.mGoAlbm_btn);
mGoCamera_btn.setOnClickListener(this);
mGoAlbm_btn.setOnClickListener(this);
}
@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.mGoCamera_btn:
getPicFromCamera();
break;
case R.id.mGoAlbm_btn:
getPicFromAlbm();
break;
default:
break;
}
}
/**
* ´ÓÏà»ú»ñȡͼƬ
*/
private void getPicFromCamera() {
//ÓÃÓÚ±£´æµ÷ÓÃÏà»úÅÄÕÕºóËùÉú³ÉµÄÎļþ
tempFile = new File(Environment.getExternalStorageDirectory().getPath(), System.currentTimeMillis() + ".jpg");
//Ìø×ªµ½µ÷ÓÃϵͳÏà»ú
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//Åжϰ汾
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) { //Èç¹ûÔÚAndroid7.0ÒÔÉÏ,ʹÓÃFileProvider»ñÈ¡Uri
intent.setFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
Uri contentUri = FileProvider.getUriForFile(MainActivity.this, "com.hansion.chosehead", tempFile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, contentUri);
Log.e("dasd", contentUri.toString());
} else { //·ñÔòʹÓÃUri.fromFile(file)·½·¨»ñÈ¡Uri
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(tempFile));
}
startActivityForResult(intent, CAMERA_REQUEST_CODE);
}
/**
* ´ÓÏà²á»ñȡͼƬ
*/
private void getPicFromAlbm() {
Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
photoPickerIntent.setType("image/*");
startActivityForResult(photoPickerIntent, ALBUM_REQUEST_CODE);
}
/**
* ²Ã¼ôͼƬ
*/
private void cropPhoto(Uri uri) {
Intent intent = new Intent("com.android.camera.action.CROP");
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
intent.setDataAndType(uri, "image/*");
intent.putExtra("crop", "true");
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
intent.putExtra("outputX", 300);
intent.putExtra("outputY", 300);
intent.putExtra("return-data", true);
startActivityForResult(intent, CROP_REQUEST_CODE);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
switch (requestCode) {
case CAMERA_REQUEST_CODE: //µ÷ÓÃÏà»úºó·µ»Ø
if (resultCode == RESULT_OK) {
//ÓÃÏà»ú·µ»ØµÄÕÕÆ¬È¥µ÷Óüô²ÃÒ²ÐèÒª¶ÔUri½øÐд¦Àí
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
Uri contentUri = FileProvider.getUriForFile(MainActivity.this, "com.hansion.chosehead", tempFile);
cropPhoto(contentUri);
} else {
cropPhoto(Uri.fromFile(tempFile));
}
}
break;
case ALBUM_REQUEST_CODE: //µ÷ÓÃÏà²áºó·µ»Ø
if (resultCode == RESULT_OK) {
Uri uri = intent.getData();
cropPhoto(uri);
}
break;
case CROP_REQUEST_CODE: //µ÷Óüô²Ãºó·µ»Ø
Bundle bundle = intent.getExtras();
if (bundle != null) {
//ÔÚÕâÀï»ñµÃÁ˼ô²ÃºóµÄBitmap¶ÔÏ󣬿ÉÒÔÓÃÓÚÉÏ´«
Bitmap image = bundle.getParcelable("data");
//ÉèÖõ½ImageViewÉÏ
mHeader_iv.setImageBitmap(image);
//Ò²¿ÉÒÔ½øÐÐһЩ±£´æ¡¢Ñ¹ËõµÈ²Ù×÷ºóÉÏ´«
// String path = saveImage("crop", image);
}
break;
}
}
public String saveImage(String name, Bitmap bmp) {
File appDir = new File(Environment.getExternalStorageDirectory().getPath());
if (!appDir.exists()) {
appDir.mkdir();
}
String fileName = name + ".jpg";
File file = new File(appDir, fileName);
try {
FileOutputStream fos = new FileOutputStream(file);
bmp.compress(Bitmap.CompressFormat.PNG, 100, fos);
fos.flush();
fos.close();
return file.getAbsolutePath();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:padding="5dp"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="30dp"
android:text="Ñ¡ÔñÍ·Ïñ"
android:textSize="18sp" />
<ImageView
android:id="@+id/mHeader_iv"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_gravity="center_horizontal"
android:layout_marginTop="50dp"
android:src="@mipmap/ic_launcher" />
<android.support.v4.widget.Space
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
<Button
android:id="@+id/mGoCamera_btn"
android:text="ÅÄÕÕÑ¡Ôñ"
android:layout_marginBottom="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/mGoAlbm_btn"
android:text="±¾µØÏà²áÑ¡Ôñ"
android:layout_marginBottom="10dp"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
±¾ÎÄ»¹Óжദ¿ÉÓÅ»¯µÄµØ·½£¬±ÈÈçAndroid 6.0ÒÔÉ϶¯Ì¬È¨Ï޵ĻñÈ¡¡¢±£´æÍ¼Æ¬Ç°¶ÔSD¿¨ÊÇ·ñ¿ÉÓõÄÅжϡ¢ÈÝ´í´ëÊ©µÈµÈ¡£ÕâЩ¶¼ÊDz»ÊôÓÚ±¾ÎĵÄÖ÷ÒªÄÚÈÝ£¬±¾ÎľͲ»ÔÙ¶à˵ÁË¡£ Æäʵ»¹ÓÐһЩƫÃŵķ½·¨£¬²»¹ý±¾ÈËÊDz»ÌᳫµÄ£¬±ÈÈçÏÂÎÄ×Ô¼º´¦ÀíStrictModeÑÏ¿Áģʽ¡¢»òÕß½«targetSdkVersion¸ÄΪ24ÒÔϵȷ½·¨£¬ÕâЩ¶¼ÊÇÎ¥±³¿ª·¢Ë¼ÏëµÄ·½·¨£¬×îºÃ²»ÒªÊ¹Óá£
//½¨ÒéÔÚapplication µÄonCreate()µÄ·½·¨Öе÷ÓÃ
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
StrictMode.setVmPolicy(builder.build());
}