大的图片，图片放大之后 放大级别比较小 导致图片不清晰，怎么才能修改一下放大限制

## Current use version？
#### 当前使用的版本是多少？

```最新版本

```

## Will this problem occur in demo?
#### Demo能否复现这问题？

```能

```

## Describe the problem or provide an error log？
#### 描述问题或提供错误log？

``` 比较大的图片，图片放大之后 放大级别比较小 导致图片不清晰，怎么才能修改一下放大限制
```

The issue mentions only the Android demo and the large-image zoom behavior; no source file or test is identified. Reproduce the problem in the demo first, then locate the image preview and zoom-limit configuration. Done means large images can be enlarged enough to remain clear.

Written by the indexing model from the issue text.