静态代码块里，如何拿到PackageManager？

小小写

于 2020-06-20 17:49:00 发布

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分类专栏： Android

本文链接：https://blog.youkuaiyun.com/u013398960/article/details/106874627

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近期遇到一个场景，
静态代码块里，无法拿到context，context.getPackageManager只在运行时适用，而静态代码块里无法做到，那么如何拿到PackageManager？

例如:

static {
       
        if(判断条件) {
            //执行静态方法;
        }
      
    }

从NfcAdapater里边找到了启发。

package android.nfc;

/**
 * Represents the local NFC adapter.
 * <p>
 * Use the helper {@link #getDefaultAdapter(Context)} to get the default NFC
 * adapter for this Android device.
 *
 * <div class="special reference">
 * <h3>Developer Guides</h3>
 * <p>For more information about using NFC, read the
 * <a href="{@docRoot}guide/topics/nfc/index.html">Near Field Communication</a> developer guide.</p>
 * <p>To perform basic file sharing between devices, read
 * <a href="{@docRoot}training/beam-files/index.html">Shari