编写一段基于android12的使用PackageInstaller类的uninstall接口卸载应用 并使用IntentSender类接收卸载结果的java代码

以下是基于Android 12的使用PackageInstaller类的uninstall接口卸载应用并使用IntentSender类接收卸载结果的Java代码示例：

private static final int UNINSTALL_REQUEST_CODE = 1;

// 获取PackageManager和PackageInstaller
PackageManager packageManager = getPackageManager();
PackageInstaller packageInstaller = packageManager.getPackageInstaller();

// 通过包名获取应用信息
ApplicationInfo appInfo = null;
try {
    appInfo = packageManager.getApplicationInfo("com.example.packageName", 0);
} catch (PackageManager.NameNotFoundException e) {
    e.printStackTrace();
}

// 创建卸载Intent
Intent uninstallIntent = new Intent(Intent.ACTION_UNINSTALL_PACKAGE);
uninstallIntent.setData(Uri.parse("package:" + appInfo.packageName));
PendingIntent pendingIntent = PendingIntent.getActivity(this, UNINSTALL_REQUEST_CODE, uninstallIntent, 0);

// 创建卸载SessionParams
PackageInstaller.SessionParams params = new PackageInstaller.SessionParams(PackageInstaller.SessionParams.MODE_FULL_INSTALL);
params.setAppPackageName(appInfo.packageName);
params.setInstallLocation(appInfo.flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE);

// 开始卸载会话
int sessionId = packageInstaller.createSession(params);
PackageInstaller.Session session = packageInstaller.openSession(sessionId);
session.createIntentSender().sendIntent(this, UNINSTALL_REQUEST_CODE, null, pendingIntent.getIntentSender(), null);

// 处理卸载结果
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == UNINSTALL_REQUEST_CODE) {
        if (resultCode == RESULT_OK) {
            // 应用卸载成功
        } else {
            // 应用卸载失败
        }
    }
}

需要注意的是，该代码示例中的UNINSTALL_REQUEST_CODE常量用于识别卸载结果的Intent，需要在onActivityResult方法中进行处理。此外，该代码示例中使用的ApplicationInfo对象和包名仅作示例，实际应用中需要根据具体情况进行替换。