【移动应用开发技术】如何解决Android调用系统图片裁剪限定尺寸及7.0照相问题

【移动应用开发技术】如何解决Android调用系统图片裁剪限定尺寸及7.0照相问题

在下给大家分享一下如何解决Android调用系统图片裁剪限定尺寸及7.0照相问题，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！本文实例为大家分享了Android调用系统图片裁剪限定尺寸及7.0照相问题的解决方法，具体内容如下内容：手机系统的裁剪介绍，7.0调用相机崩溃解决代码如下：<?xml

version="1.0"

encoding="utf-8"?>

<LinearLayout

xmlns:android="/apk/res/android"

xmlns:app="/apk/res-auto"

xmlns:tools="/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

tools:context="com.example.leixiansheng.cutphoto.MainActivity">

<Button

android:id="@+id/btn_select_from_local"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="cut"/>

<ImageView

android:id="@+id/iv_local"

android:layout_gravity="center_horizontal"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

/>

</LinearLayout>java：package

com.example.leixiansheng.cutphoto;

import

android.Manifest;

import

android.annotation.SuppressLint;

import

android.content.Intent;

import

android.content.pm.PackageManager;

import

android.graphics.Bitmap;

import

android.graphics.BitmapFactory;

import

.Uri;

import

android.os.Environment;

import

android.os.StrictMode;

import

vider.MediaStore;

import

android.support.annotation.NonNull;

import

android.support.v4.app.ActivityCompat;

import

android.support.v4.content.ContextCompat;

import

android.support.v7.app.AppCompatActivity;

import

android.os.Bundle;

import

android.util.Log;

import

android.view.View;

import

android.widget.Button;

import

android.widget.ImageView;

import

android.widget.Toast;

import

java.io.FileNotFoundException;

import

java.util.ArrayList;

import

java.util.List;

import

butterknife.BindView;

import

butterknife.ButterKnife;

import

butterknife.OnClick;

public

class

MainActivity

extends

AppCompatActivity

{

@BindView(R.id.btn_select_from_local)

Button

mBtnSelectFromLocal;

@BindView(R.id.btn_take_photo)

Button

mBtnTake;

@BindView(R.id.iv_local)

ImageView

mIvLocal;

private

static

final

String

TAG

=

MainActivity.class.getSimpleName();

private

static

final

String

IMAGE_FILE_LOCATION

=

"file:///"

+

Environment.getExternalStorageDirectory().getPath()

+

"/temp.jpg";

private

static

final

int

CHOOSE_PICTURE

=

1;

private

static

final

int

CROP_PICTURE

=

2;

private

static

final

int

REQUEST_CODE_OK

=

3;

private

static

final

int

TAKE_PHOTO

=

4;

private

Uri

imageUri

=

Uri.parse(IMAGE_FILE_LOCATION);

private

PermissionListener

mListener;

@SuppressLint("NewApi")

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

ButterKnife.bind(this);

//

android

7.0系统解决拍照的问题

StrictMode.VmPolicy.Builder

builder

=

new

StrictMode.VmPolicy.Builder();

StrictMode.setVmPolicy(builder.build());

builder.detectFileUriExposure();

}

@OnClick({R.id.btn_select_from_local,

R.id.btn_take_photo})

public

void

onClick(final

View

view)

{

requestRunTimePermission(new

String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE,

Manifest.permission.READ_EXTERNAL_STORAGE,

Manifest.permission.CAMERA},

new

PermissionListener()

{

@Override

public

void

onGranted()

{

switch

(view.getId())

{

case

R.id.btn_select_from_local:

selectFromLocal();

break;

case

R.id.btn_take_photo:

takePhoto();

break;

}

}

@Override

public

void

onDenied(List<String>

deniedPermission)

{

Toast.makeText(MainActivity.this,

"权限不足",

Toast.LENGTH_SHORT).show();

}

});

}

/**

*

启动系相机

*/

private

void

takePhoto()

{

Intent

intent

=

new

Intent("android.media.action.IMAGE_CAPTURE");

intent.putExtra(MediaStore.EXTRA_OUTPUT,

imageUri);

//启动相机（带返回结果）

startActivityForResult(intent,

TAKE_PHOTO);

}

/**

*

启动系统图片选择

*/

private

void

selectFromLocal()

{

Intent

intent

=

new

Intent(Intent.ACTION_PICK,

null);

intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,

"image/*");

//返回数据为被选照片的Uri

startActivityForResult(intent,

CHOOSE_PICTURE);

}

@Override

protected

void

onActivityResult(int

requestCode,

int

resultCode,

Intent

data)

{

super.onActivityResult(requestCode,

resultCode,

data);

Log.d(TAG,

resultCode

+

"");

if

(resultCode

==

RESULT_OK)

{

switch

(requestCode)

{

case

CHOOSE_PICTURE:

startPhotoZoom(data.getData());

break;

case

CROP_PICTURE:

//

取得裁剪后的图片

try

{

mIvLocal.setImageBitmap(BitmapFactory.decodeStream(

getContentResolver().openInputStream(imageUri)

));

}

catch

(FileNotFoundException

e)

{

e.printStackTrace();

}

break;

case

TAKE_PHOTO:

startPhotoZoom(imageUri);

break;

default:

break;

}

}

}

/**

*

设置裁剪参数，开始裁剪

*

@param

uri

*/

public

void

startPhotoZoom(Uri

uri)

{

Intent

intent

=

new

Intent("com.android.camera.action.CROP");

intent.setDataAndType(uri,

"image/*");

//

下面这个crop=true是设置在开启的Intent中设置显示的VIEW可裁剪

intent.putExtra("crop",

"true");

intent.putExtra("scale",

true);

intent.putExtra("aspectX",

2);

//裁剪框

X

比值

intent.putExtra("aspectY",

1);

//裁剪框

Y

比值

intent.putExtra("outputX",

600);

//裁剪后输出宽度

intent.putExtra("outputY",

300);

//裁剪后输出高度

intent.putExtra("return-data",

false);

intent.putExtra(MediaStore.EXTRA_OUTPUT,

imageUri);

//输出路径

intent.putExtra("outputFormat",

Bitmap.CompressFormat.JPEG.toString());

intent.putExtra("noFaceDetection",

true);

//

no

face

detection

startActivityForResult(intent,

CROP_PICTURE);

}

/**

*

动态权限请求

*

*

@param

permissions

*/

public

void

requestRunTimePermission(String[]

permissions,

PermissionListener

listener)

{

mListener

=

listener;

List<String>

permissionList

=

new

ArrayList<>();

for

(String

permission

:

permissions)

{

if

(ContextCompat.checkSelfPermission(this,

permission)

!=

PackageManager.PERMISSION_GRANTED)

{//检测当前权限是否已经被允许

permissionList.add(permission);//没有则添加进集合

}

}

if

(!permissionList.isEmpty())

{//检测权限集合中是否有未申请的权限

ActivityCompat.requestPermissions(this,

permissionList.toArray(new

String[permissionList.size()]),

REQUEST_CODE_OK);

}

else

{

//所有权限都通过了

mListener.onGranted();

}

}

@Override

public

void

onRequestPermissionsResult(int

req