# uCrop

**Repository Path**: netral/uCrop

## Basic Information

- **Project Name**: uCrop
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-10-24
- **Last Updated**: 2021-10-24

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# 最火Android开源项目uCrop使用
---
开源地址：[https://github.com/open-android/uCrop](https://github.com/open-android/uCrop "开源项目地址")

 PS：如果觉得文章太长，你也可观看该课程的[视频](https://www.boxuegu.com/web/html/video.html?courseId=172&sectionId=8a2c9bed5a3a4c7e015a3bbffc6107ed&chapterId=8a2c9bed5a3a4c7e015a3acfe4df022b&vId=8a2c9bed5a3a4c7e015a3a66a8f40003&videoId=D3C4DA48E22706169C33DC5901307461)，亲，里面还有高清，无码的福利喔

一款极具观赏性的图片裁剪库


# 运行效果
![](https://github.com/Yalantis/uCrop/raw/master/preview.gif)

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![黑马助手.png](http://upload-images.jianshu.io/upload_images/4037105-f777f1214328dcc4.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)


## 使用步骤

### 1. 在project的build.gradle添加如下代码(如下图)

	allprojects {
	    repositories {
	        ...
	        maven { url "https://jitpack.io" }
	    }
	}

![](http://oi5nqn6ce.bkt.clouddn.com/itheima/booster/code/jitpack.png)


### 2. 在Module的build.gradle添加依赖

    compile 'com.github.open-android:uCrop:v1.0.0'


### 3. 复制如下代码到xml

	<?xml version="1.0" encoding="utf-8"?>
	<LinearLayout
	    xmlns:android="http://schemas.android.com/apk/res/android"
	    android:layout_width="match_parent"
	    android:layout_height="match_parent"
	    android:orientation="vertical">
	
	    <Button
	        android:onClick="start"
	        android:layout_width="wrap_content"
	        android:layout_height="wrap_content"
	        android:text="开始裁剪图片"/>
	
	    <ImageView
	        android:layout_width="wrap_content"
	        android:layout_height="wrap_content"
	        android:id="@+id/iv"/>
	</LinearLayout>

### 4. 复制如下代码到activity中 , 并且在onCreate方法查找ImageView

		private ImageView mIv;

	    @Override
	    protected void onCreate(Bundle savedInstanceState) {
	        super.onCreate(savedInstanceState);
	        setContentView(R.layout.activity_main);
	
	        mIv = (ImageView) findViewById(R.id.iv);
	    }

		public void start(View view){
	        //需要裁剪的图片路径
	        Uri sourceUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory() , "icon_18.jpg"));
	
	        //裁剪完毕的图片存放路径
	        Uri destinationUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory() , "icon_18_2.jpg"));
	
	        UCrop.of(sourceUri, destinationUri) //定义路径
	                .withAspectRatio(4, 3) //定义裁剪比例 4:3 ， 16:9
	                .withMaxResultSize(100, 100) //定义裁剪图片宽高最大值
	                .start(this);
	    }
	
	    @Override
	    public void onActivityResult(int requestCode, int resultCode, Intent data) {
	
	        //裁剪成功后调用
	        if (resultCode == RESULT_OK && requestCode == UCrop.REQUEST_CROP) {
	            final Uri resultUri = UCrop.getOutput(data);
	            //设置裁剪完成后的图片显示
	            mIv.setImageURI(resultUri);
	
	            //出错时进入该分支
	        } else if (resultCode == UCrop.RESULT_ERROR) {
	            final Throwable cropError = UCrop.getError(data);
	        }
	    }

### 5. 在清单文件注册以下activity ，该activity是裁剪界面

		<activity
            android:name="com.yalantis.ucrop.UCropActivity"
            android:screenOrientation="portrait"
            android:theme="@style/Theme.AppCompat.Light.NoActionBar"/>

### 6. 并且添加对SD卡的读写权限。

		 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
	    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"></uses-permission>





* 详细的使用方法在DEMO里面都演示啦,如果你觉得这个库还不错,请赏我一颗star吧~~~

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![](http://upload-images.jianshu.io/upload_images/4037105-8f737b5104dd0b5d.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)