# NinePictureDemo

**Repository Path**: maxinDev/nine-picture-demo

## Basic Information

- **Project Name**: NinePictureDemo
- **Description**: Android中动态加载.9图的Demo
- **Primary Language**: Android
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-04-22
- **Last Updated**: 2022-05-25

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# NinePictureDemo

#### 介绍
Android中动态加载.9图的Demo

1. 将`.9图`使用sdk目录下的aapt工具将`.9图`转换为`png图`（打包APK的时候会自动转换）
2. 图片加载到`Bitmap`，使用`NinePatch.isNinePatchChunk(bitmap.getNinePatchChunk())`判断是否是`.9图`
3. 创建`.9图`对象,使用api `new NinePatchDrawable(Resources res, Bitmap bitmap, byte[] chunk, Rect padding, Rect opticalInsets, String srcName)`
4. `NinePatchDrawable`加载到view中

![demo截图](https://images.gitee.com/uploads/images/2021/0422/165727_b589d87c_1518014.gif "ninepatch.gif")

```kotlin
val inputStream = targetView.context.resources.assets.open(path)
val bitmap = BitmapFactory.decodeStream(inputStream)
if(isUseNinePatch){
    val chunk = bitmap.ninePatchChunk
    if(NinePatch.isNinePatchChunk(chunk)){
        val drawable = NinePatchDrawable(targetView.resources, bitmap, chunk, NinePatchChunk.getPaddingRect(chunk), "")
        targetView.background = drawable
    }else{
        Toast.makeText(targetView.context, "只能加载.9背景图", Toast.LENGTH_SHORT).show()
    }
}else{
    targetView.background = bitmap.toDrawable(targetView.resources)
}
```