Compile SDK 为Android 7的自动升级APK的处理

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/rocklee/article/details/85839859

若Compile SDK为Android7或以上, 由于安全问题,Uri只能通过FileProvider.getUriForFile获得.

1/先增加权限

       修改AndroidManifest.xml, 增加权限:

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

并且在Application节里增加provider节:

<application
        android:name=".services.MyApplication"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="com.yourpackage.fileProvider"
            android:exported="false"
            android:grantUriPermissions="true"
        >
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/filepaths" />
        </provider>
...

com.yourpackage换成你的app的包.

2/修改升级安装代码:

private void installAPK(){
        File apkfile = new File(filePathForSave, appVersionInfo.name);
        if (!apkfile.exists())
        {
            return;
        }
        /*Intent i = new Intent(Intent.ACTION_INSTALL_PACKAGE);
        i.setDataAndType(Uri.parse("file://" + apkfile.toString()), "application/vnd.android.package-archive");
        i.putExtra("EXTRA_RETURN_RESULT", true);
        ((Activity)context).startActivityForResult(i, REQUEST_CODE);*/

        Intent intent = new Intent(Intent.ACTION_VIEW);
//判断是否是AndroidN以及更高的版本
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
            Uri contentUri = FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID + ".fileProvider", apkfile);
            intent.setDataAndType(contentUri, "application/vnd.android.package-archive");
        } else {
            intent.setDataAndType(Uri.fromFile(apkfile), "application/vnd.android.package-archive");
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        }
        ((Activity)context).startActivity(intent);
    }

3/在res资源中增加xml/filepaths.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <paths>
        <external-path name="download" path="" />
    </paths>
</resources>